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node_test.cc
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node_test.cc
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#include <cmath>
#include <limits>
#include <memory>
#include "Eigen/Dense"
#include "catch.hpp"
#include "function_base.h"
#include "geometry.h"
#include "node.h"
// Check node class for 1D case
TEST_CASE("Node is checked for 1D case", "[node][1D]") {
const unsigned Dim = 1;
const unsigned Dof = 1;
const unsigned Nphases = 1;
const unsigned Nphase = 0;
Eigen::Matrix<double, 1, 1> coords;
coords.setZero();
// Check for id = 0
SECTION("Node id is zero") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->id() == 0);
}
// Check for id is a positive value
SECTION("Node id is positive") {
mpm::Index id = std::numeric_limits<mpm::Index>::max();
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->id() == std::numeric_limits<mpm::Index>::max());
}
// Check for degrees of freedom
SECTION("Check degrees of freedom") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->dof() == 1);
}
// Check status
SECTION("Check status") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->status() == false);
node->assign_status(true);
REQUIRE(node->status() == true);
}
SECTION("Boundary ghost id") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
node->ghost_id(5);
REQUIRE(node->ghost_id() == 5);
}
// Check MPI Rank
SECTION("Check MPI Rank") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->id() == 0);
// Assign MPI ranks
node->mpi_rank(0);
node->mpi_rank(0);
node->mpi_rank(1);
std::set<unsigned> ranks = node->mpi_ranks();
REQUIRE(ranks.size() == 2);
std::vector<unsigned> mpi_ranks = {0, 1};
unsigned i = 0;
for (auto it = ranks.begin(); it != ranks.end(); ++it, ++i)
REQUIRE(*it == mpi_ranks.at(i));
}
// Test coordinates function
SECTION("coordinates function is checked") {
mpm::Index id = 0;
const double Tolerance = 1.E-7;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
// Check for coordinates being zero
auto coordinates = node->coordinates();
for (unsigned i = 0; i < coordinates.size(); ++i)
REQUIRE(coordinates(i) == Approx(coords(i)).epsilon(Tolerance));
REQUIRE(coordinates.size() == Dim);
// Check for negative value of coordinates
for (unsigned i = 0; i < coordinates.size(); ++i)
coords(i) = -1. * std::numeric_limits<double>::max();
node->assign_coordinates(coords);
coordinates = node->coordinates();
for (unsigned i = 0; i < coordinates.size(); ++i)
REQUIRE(coordinates(i) == Approx(coords(i)).epsilon(Tolerance));
REQUIRE(coordinates.size() == Dim);
// Check for positive value of coordinates
for (unsigned i = 0; i < coordinates.size(); ++i)
coords(i) = std::numeric_limits<double>::max();
node->assign_coordinates(coords);
coordinates = node->coordinates();
for (unsigned i = 0; i < coordinates.size(); ++i)
REQUIRE(coordinates(i) == Approx(coords(i)).epsilon(Tolerance));
REQUIRE(coordinates.size() == Dim);
}
SECTION("Check nodal properties") {
mpm::Index id = 0;
const double Tolerance = 1.E-7;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
// Check mass
REQUIRE(node->mass(Nphase) == Approx(0.0).epsilon(Tolerance));
double mass = 100.5;
// Update mass to 100.5
REQUIRE_NOTHROW(node->update_mass(true, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(100.5).epsilon(Tolerance));
// Update mass to 201
REQUIRE_NOTHROW(node->update_mass(true, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(201.0).epsilon(Tolerance));
// Assign mass to 100
mass = 100.;
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(100.0).epsilon(Tolerance));
SECTION("Check nodal pressure") {
// Check pressure
REQUIRE(node->pressure(Nphase) == Approx(0.0).epsilon(Tolerance));
double pressure = 1000.7;
// Update pressure to 1000.7
REQUIRE_NOTHROW(node->update_mass_pressure(Nphase, mass * pressure));
REQUIRE(node->pressure(Nphase) == Approx(1000.7).epsilon(Tolerance));
// Update pressure to 2001.4
REQUIRE_NOTHROW(node->update_mass_pressure(Nphase, mass * pressure));
REQUIRE(node->pressure(Nphase) == Approx(2001.4).epsilon(Tolerance));
// Assign pressure to 1000
pressure = 1000.;
node->assign_pressure(Nphase, pressure);
REQUIRE(node->pressure(Nphase) == Approx(1000.0).epsilon(Tolerance));
// Assign mass to 0
mass = 0.;
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(0.0).epsilon(Tolerance));
// Try to update pressure to 2000, should throw and keep to 1000.
pressure = 1000.;
const double pmass = 1.5;
node->assign_pressure(Nphase, pressure);
REQUIRE(node->pressure(Nphase) == Approx(1000.0).epsilon(Tolerance));
}
SECTION("Check external force") {
// Create a force vector
Eigen::Matrix<double, Dim, 1> force;
for (unsigned i = 0; i < force.size(); ++i) force(i) = 10.;
// Check current external force is zero
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
// Update force to 10.0
REQUIRE_NOTHROW(node->update_external_force(true, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(10.).epsilon(Tolerance));
// Update force to 20.0
REQUIRE_NOTHROW(node->update_external_force(true, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(20.).epsilon(Tolerance));
// Assign force as 10.0
REQUIRE_NOTHROW(node->update_external_force(false, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(10.).epsilon(Tolerance));
// Check if exception is handled
unsigned bad_phase = 4;
// Exception handling invalid force dimension
// TODO Assert:
// REQUIRE_NOTHROW(node->update_external_force(true, bad_phase, force));
// Exception handling invalid force dimension
// TODO Assert:
// REQUIRE_NOTHROW(node->update_external_force(false, bad_phase, force));
SECTION("Check concentrated force") {
// Set external force to zero
force.setZero();
REQUIRE_NOTHROW(node->update_external_force(false, Nphase, force));
// concentrated force
std::shared_ptr<mpm::FunctionBase> ffunction = nullptr;
double concentrated_force = 65.32;
const unsigned Direction = 0;
// Check external force
for (unsigned i = 0; i < Dim; ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
REQUIRE(node->assign_concentrated_force(
Nphase, Direction, concentrated_force, ffunction) == true);
double current_time = 0.0;
node->apply_concentrated_force(Nphase, current_time);
for (unsigned i = 0; i < Dim; ++i) {
if (i == Direction)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(concentrated_force).epsilon(Tolerance));
else
REQUIRE(node->external_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
}
// Check for incorrect direction / phase
const unsigned wrong_dir = 4;
REQUIRE(node->assign_concentrated_force(
Nphase, wrong_dir, concentrated_force, ffunction) == false);
// Check again to ensure value hasn't been updated
for (unsigned i = 0; i < Dim; ++i) {
if (i == Direction)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(concentrated_force).epsilon(Tolerance));
else
REQUIRE(node->external_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
}
}
}
SECTION("Check internal force") {
// Create a force vector
Eigen::Matrix<double, Dim, 1> force;
for (unsigned i = 0; i < force.size(); ++i) force(i) = 10.;
// Check current internal force is zero
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
// Update force to 10.0
REQUIRE_NOTHROW(node->update_internal_force(true, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(10.).epsilon(Tolerance));
// Update force to 20.0
REQUIRE_NOTHROW(node->update_internal_force(true, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(20.).epsilon(Tolerance));
// Assign force as 10.0
REQUIRE_NOTHROW(node->update_internal_force(false, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(10.).epsilon(Tolerance));
// Check if exception is handled
unsigned bad_phase = 4;
// Exception handling invalid force dimension
// TODO Assert:
// REQUIRE(node->update_internal_force(true, bad_phase,
// force) == false); Exception handling invalid force dimension
// TODO Assert:
// REQUIRE(node->update_internal_force(false, bad_phase,
// force) == false);
}
SECTION("Check compute acceleration and velocity") {
// Time step
const double dt = 0.1;
// Nodal mass
double mass = 100.;
// Update mass to 100.5
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(mass).epsilon(Tolerance));
// Check internal force
// Create a force vector
Eigen::Matrix<double, Dim, 1> force;
for (unsigned i = 0; i < force.size(); ++i) force(i) = 10. * i;
// Update force to 10.0
REQUIRE_NOTHROW(node->update_internal_force(false, Nphase, force));
// Internal force
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(force(i)).epsilon(Tolerance));
// External force
for (unsigned i = 0; i < force.size(); ++i) force(i) = 5. * i;
// Update force to 10.0
REQUIRE_NOTHROW(node->update_external_force(false, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(force(i)).epsilon(Tolerance));
REQUIRE(node->compute_acceleration_velocity(Nphase, dt) == true);
for (unsigned i = 0; i < force.size(); ++i) force(i) = 15. * i;
// Check acceleration
Eigen::Matrix<double, Dim, 1> acceleration = force / mass;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
// Check velocity
Eigen::Matrix<double, Dim, 1> velocity = force / mass * dt;
for (unsigned i = 0; i < velocity.size(); ++i)
REQUIRE(node->velocity(Nphase)(i) ==
Approx(velocity(i)).epsilon(Tolerance));
// Apply friction constraints
REQUIRE(node->assign_friction_constraint(0, 1., 0.5) == true);
// Apply friction constraints
REQUIRE(node->assign_friction_constraint(-1, 1., 0.5) == false);
REQUIRE(node->assign_friction_constraint(3, 1., 0.5) == false);
// Test acceleration with constraints
acceleration[0] = 0.5 * acceleration[0];
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
// Apply cundall damping when calculating acceleration
REQUIRE(node->compute_acceleration_velocity_cundall(Nphase, dt, 0.05) ==
true);
// Test acceleration with cundall damping
acceleration[0] = 0.;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
// Apply velocity constraints
REQUIRE(node->assign_velocity_constraint(0, 10.5) == true);
REQUIRE(node->compute_acceleration_velocity(Nphase, dt) == true);
// Test velocity with constraints
velocity[0] = 10.5;
for (unsigned i = 0; i < velocity.size(); ++i)
REQUIRE(node->velocity(Nphase)(i) ==
Approx(velocity(i)).epsilon(Tolerance));
// Test acceleration with constraints
acceleration[0] = 0.;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
// Exception check when mass is zero
mass = 0.;
// Update mass to 0.
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(mass).epsilon(Tolerance));
REQUIRE(node->compute_acceleration_velocity(Nphase, dt) == false);
}
SECTION("Check momentum and velocity") {
// Check momentum
Eigen::Matrix<double, Dim, 1> momentum;
for (unsigned i = 0; i < momentum.size(); ++i) momentum(i) = 10.;
// Check initial momentum
for (unsigned i = 0; i < momentum.size(); ++i)
REQUIRE(node->momentum(Nphase)(i) == Approx(0.).epsilon(Tolerance));
// Check update momentum to 10
REQUIRE_NOTHROW(node->update_momentum(true, Nphase, momentum));
for (unsigned i = 0; i < momentum.size(); ++i)
REQUIRE(node->momentum(Nphase)(i) == Approx(10.).epsilon(Tolerance));
// Check update momentum to 20
REQUIRE_NOTHROW(node->update_momentum(true, Nphase, momentum));
for (unsigned i = 0; i < momentum.size(); ++i)
REQUIRE(node->momentum(Nphase)(i) == Approx(20.).epsilon(Tolerance));
// Check assign momentum to 10
REQUIRE_NOTHROW(node->update_momentum(false, Nphase, momentum));
for (unsigned i = 0; i < momentum.size(); ++i)
REQUIRE(node->momentum(Nphase)(i) == Approx(10.).epsilon(Tolerance));
// Check zero velocity
for (unsigned i = 0; i < Dim; ++i)
REQUIRE(node->velocity(Nphase)(i) == Approx(0.).epsilon(Tolerance));
// Check mass
double mass = 0.;
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(0.0).epsilon(Tolerance));
// Compute and check velocity this should throw zero mass
node->compute_velocity();
mass = 100.;
// Update mass to 100.5
REQUIRE_NOTHROW(node->update_mass(true, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(100.).epsilon(Tolerance));
// Compute and check velocity
node->compute_velocity();
for (unsigned i = 0; i < Dim; ++i)
REQUIRE(node->velocity(Nphase)(i) == Approx(0.1).epsilon(Tolerance));
// Check if exception is handled
unsigned bad_phase = 1;
// Exception handling invalid momentum dimension
// TODO Assert: REQUIRE_NOTHROW(node->update_momentum(true, bad_phase,
// momentum)); Exception handling invalid momentum dimension
// TODO Assert: REQUIRE_NOTHROW(node->update_momentum(false, bad_phase,
// momentum));
// Apply velocity constraints
REQUIRE(node->assign_velocity_constraint(0, 10.5) == true);
// Check out of bounds condition
REQUIRE(node->assign_velocity_constraint(1, 0) == false);
// Check velocity before constraints
Eigen::Matrix<double, Dim, 1> velocity;
velocity << 0.1;
for (unsigned i = 0; i < velocity.size(); ++i)
REQUIRE(node->velocity(Nphase)(i) ==
Approx(velocity(i)).epsilon(Tolerance));
// Apply constraints
node->apply_velocity_constraints();
// Check apply constraints
velocity << 10.5;
for (unsigned i = 0; i < velocity.size(); ++i)
REQUIRE(node->velocity(Nphase)(i) ==
Approx(velocity(i)).epsilon(Tolerance));
}
SECTION("Check acceleration") {
// Check acceleration
Eigen::Matrix<double, Dim, 1> acceleration;
for (unsigned i = 0; i < acceleration.size(); ++i) acceleration(i) = 5.;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) == Approx(0.).epsilon(Tolerance));
REQUIRE_NOTHROW(node->update_acceleration(true, Nphase, acceleration));
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) == Approx(5.).epsilon(Tolerance));
// Check if exception is handled
unsigned bad_phase = 1;
// Exception handling invalid acceleration dimension
// TODO Assert: REQUIRE_NOTHROW(node->update_acceleration(true, bad_phase,
// acceleration));
// Exception handling invalid acceleration dimension
// TODO Assert: REQUIRE_NOTHROW(node->update_acceleration(false,
// bad_phase, acceleration));
// Apply velocity constraints
REQUIRE(node->assign_velocity_constraint(0, 10.5) == true);
// Check out of bounds condition
REQUIRE(node->assign_velocity_constraint(1, 12.5) == false);
// Check acceleration before constraints
acceleration.resize(Dim);
acceleration << 5.;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
// Apply constraints
node->apply_velocity_constraints();
// Check apply constraints
acceleration << 0.0;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
}
SECTION("Check node material ids") {
// Add material to nodes
node->append_material_id(0);
node->append_material_id(1);
node->append_material_id(4);
node->append_material_id(0);
node->append_material_id(2);
// Check size of material_ids
REQUIRE(node->material_ids().size() == 4);
// Check elements of material_ids
std::vector<unsigned> material_ids = {0, 1, 2, 4};
auto mat_ids = node->material_ids();
unsigned i = 0;
for (auto mitr = mat_ids.begin(); mitr != mat_ids.end(); ++mitr, ++i)
REQUIRE(*mitr == material_ids.at(i));
}
}
}
// \brief Check node class for 2D case
TEST_CASE("Node is checked for 2D case", "[node][2D]") {
const unsigned Dim = 2;
const unsigned Dof = 2;
const unsigned Nphases = 1;
const unsigned Nphase = 0;
Eigen::Vector2d coords;
coords.setZero();
// Check for id = 0
SECTION("Node id is zero") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->id() == 0);
}
// Check for id is a positive value
SECTION("Node id is positive") {
mpm::Index id = std::numeric_limits<mpm::Index>::max();
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->id() == std::numeric_limits<mpm::Index>::max());
}
// Check for degrees of freedom
SECTION("Check degrees of freedom") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->dof() == 2);
}
// Check status
SECTION("Check status") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->status() == false);
node->assign_status(true);
REQUIRE(node->status() == true);
}
SECTION("Boundary ghost id") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
node->ghost_id(5);
REQUIRE(node->ghost_id() == 5);
}
// Check MPI Rank
SECTION("Check MPI Rank") {
mpm::Index id = 0;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
REQUIRE(node->id() == 0);
// Assign MPI ranks
node->mpi_rank(0);
node->mpi_rank(0);
node->mpi_rank(1);
std::set<unsigned> ranks = node->mpi_ranks();
REQUIRE(ranks.size() == 2);
std::vector<unsigned> mpi_ranks = {0, 1};
unsigned i = 0;
for (auto it = ranks.begin(); it != ranks.end(); ++it, ++i)
REQUIRE(*it == mpi_ranks.at(i));
}
// Test coordinates function
SECTION("coordinates function is checked") {
mpm::Index id = 0;
const double Tolerance = 1.E-7;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
// Check for coordinates being zero
auto coordinates = node->coordinates();
for (unsigned i = 0; i < coordinates.size(); ++i)
REQUIRE(coordinates(i) == Approx(coords(i)).epsilon(Tolerance));
REQUIRE(coordinates.size() == Dim);
// Check for negative value of coordinates
for (unsigned i = 0; i < coordinates.size(); ++i)
coords(i) = -1. * std::numeric_limits<double>::max();
node->assign_coordinates(coords);
coordinates = node->coordinates();
for (unsigned i = 0; i < coordinates.size(); ++i)
REQUIRE(coordinates(i) == Approx(coords(i)).epsilon(Tolerance));
REQUIRE(coordinates.size() == Dim);
// Check for positive value of coordinates
for (unsigned i = 0; i < coordinates.size(); ++i)
coords(i) = std::numeric_limits<double>::max();
node->assign_coordinates(coords);
coordinates = node->coordinates();
for (unsigned i = 0; i < coordinates.size(); ++i)
REQUIRE(coordinates(i) == Approx(coords(i)).epsilon(Tolerance));
REQUIRE(coordinates.size() == Dim);
}
SECTION("Check nodal properties") {
mpm::Index id = 0;
const double Tolerance = 1.E-7;
std::shared_ptr<mpm::NodeBase<Dim>> node =
std::make_shared<mpm::Node<Dim, Dof, Nphases>>(id, coords);
// Check mass
REQUIRE(node->mass(Nphase) == Approx(0.0).epsilon(Tolerance));
double mass = 100.5;
// Update mass to 100.5
REQUIRE_NOTHROW(node->update_mass(true, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(100.5).epsilon(Tolerance));
// Update mass to 201
REQUIRE_NOTHROW(node->update_mass(true, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(201.0).epsilon(Tolerance));
// Assign mass to 100
mass = 100.;
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(100.0).epsilon(Tolerance));
SECTION("Check nodal pressure") {
// Check pressure
REQUIRE(node->pressure(Nphase) == Approx(0.0).epsilon(Tolerance));
double pressure = 1000.7;
// Update pressure to 1000.7
REQUIRE_NOTHROW(node->update_mass_pressure(Nphase, mass * pressure));
REQUIRE(node->pressure(Nphase) == Approx(1000.7).epsilon(Tolerance));
// Update pressure to 2001.4
REQUIRE_NOTHROW(node->update_mass_pressure(Nphase, mass * pressure));
REQUIRE(node->pressure(Nphase) == Approx(2001.4).epsilon(Tolerance));
// Assign pressure to 1000
pressure = 1000.;
node->assign_pressure(Nphase, pressure);
REQUIRE(node->pressure(Nphase) == Approx(1000.0).epsilon(Tolerance));
// Assign mass to 0
mass = 0.;
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(0.0).epsilon(Tolerance));
// Try to update pressure to 2000, should throw and keep to 1000.
pressure = 1000.;
const double pmass = 1.5;
node->assign_pressure(Nphase, pressure);
REQUIRE(node->pressure(Nphase) == Approx(1000.0).epsilon(Tolerance));
}
SECTION("Check volume") {
// Check volume
REQUIRE(node->volume(Nphase) == Approx(0.0).epsilon(Tolerance));
double volume = 100.5;
// Update volume to 100.5
REQUIRE_NOTHROW(node->update_volume(true, Nphase, volume));
REQUIRE(node->volume(Nphase) == Approx(100.5).epsilon(Tolerance));
// Update volume to 201
REQUIRE_NOTHROW(node->update_volume(true, Nphase, volume));
REQUIRE(node->volume(Nphase) == Approx(201.0).epsilon(Tolerance));
// Assign volume to 100
volume = 100.;
REQUIRE_NOTHROW(node->update_volume(false, Nphase, volume));
REQUIRE(node->volume(Nphase) == Approx(100.0).epsilon(Tolerance));
}
SECTION("Check external force") {
// Create a force vector
Eigen::Matrix<double, Dim, 1> force;
for (unsigned i = 0; i < force.size(); ++i) force(i) = 10.;
// Check current external force is zero
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
// Update force to 10.0
REQUIRE_NOTHROW(node->update_external_force(true, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(10.).epsilon(Tolerance));
// Update force to 20.0
REQUIRE_NOTHROW(node->update_external_force(true, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(20.).epsilon(Tolerance));
// Assign force as 10.0
REQUIRE_NOTHROW(node->update_external_force(false, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(10.).epsilon(Tolerance));
// Check if exception is handled
Eigen::Matrix<double, Dim, 1> force_bad;
for (unsigned i = 0; i < force_bad.size(); ++i) force_bad(i) = 10.;
// Exception handling invalid force dimension
// TODO Assert: REQUIRE_NOTHROW(node->update_external_force(true, 1,
// force_bad));
// Exception handling invalid force dimension
// TODO Assert: REQUIRE_NOTHROW(node->update_external_force(false, 1,
// force_bad));
SECTION("Check concentrated force") {
// Set external force to zero
force.setZero();
REQUIRE_NOTHROW(node->update_external_force(false, Nphase, force));
// Concentrated force
std::shared_ptr<mpm::FunctionBase> ffunction = nullptr;
double concentrated_force = 65.32;
const unsigned Direction = 0;
// Check traction
for (unsigned i = 0; i < Dim; ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
REQUIRE(node->assign_concentrated_force(
Nphase, Direction, concentrated_force, ffunction) == true);
double current_time = 0.0;
node->apply_concentrated_force(Nphase, current_time);
for (unsigned i = 0; i < Dim; ++i) {
if (i == Direction)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(concentrated_force).epsilon(Tolerance));
else
REQUIRE(node->external_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
}
// Check for incorrect direction / phase
const unsigned wrong_dir = 4;
REQUIRE(node->assign_concentrated_force(
Nphase, wrong_dir, concentrated_force, ffunction) == false);
// Check again to ensure value hasn't been updated
for (unsigned i = 0; i < Dim; ++i) {
if (i == Direction)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(concentrated_force).epsilon(Tolerance));
else
REQUIRE(node->external_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
}
}
}
SECTION("Check internal force") {
// Create a force vector
Eigen::Matrix<double, Dim, 1> force;
for (unsigned i = 0; i < force.size(); ++i) force(i) = 10.;
// Check current internal force is zero
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(0.).epsilon(Tolerance));
// Update force to 10.0
REQUIRE_NOTHROW(node->update_internal_force(true, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(10.).epsilon(Tolerance));
// Update force to 20.0
REQUIRE_NOTHROW(node->update_internal_force(true, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(20.).epsilon(Tolerance));
// Assign force as 10.0
REQUIRE_NOTHROW(node->update_internal_force(false, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(10.).epsilon(Tolerance));
// Check if exception is handled
unsigned bad_phase = 1;
// Exception handling invalid force dimension
// TODO Assert:
// REQUIRE(node->update_internal_force(true, bad_phase, force) == false);
// Exception handling invalid force dimension
// TODO Assert:
// REQUIRE(node->update_internal_force(false, bad_phase, force) == false);
}
SECTION("Check compute acceleration and velocity") {
// Time step
const double dt = 0.1;
// Nodal mass
double mass = 100.;
// Update mass to 100.5
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(mass).epsilon(Tolerance));
// Check internal force
// Create a force vector
Eigen::Matrix<double, Dim, 1> force;
for (unsigned i = 0; i < force.size(); ++i) force(i) = 10. * i;
// Update force to 10.0
REQUIRE_NOTHROW(node->update_internal_force(false, Nphase, force));
// Internal force
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->internal_force(Nphase)(i) ==
Approx(force(i)).epsilon(Tolerance));
// External force
for (unsigned i = 0; i < force.size(); ++i) force(i) = 5. * i;
// Update force to 10.0
REQUIRE_NOTHROW(node->update_external_force(false, Nphase, force));
for (unsigned i = 0; i < force.size(); ++i)
REQUIRE(node->external_force(Nphase)(i) ==
Approx(force(i)).epsilon(Tolerance));
REQUIRE(node->compute_acceleration_velocity(Nphase, dt) == true);
for (unsigned i = 0; i < force.size(); ++i) force(i) = 15. * i;
// Check acceleration
Eigen::Matrix<double, Dim, 1> acceleration = force / mass;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
// Check velocity
Eigen::Matrix<double, Dim, 1> velocity = force / mass * dt;
for (unsigned i = 0; i < velocity.size(); ++i)
REQUIRE(node->velocity(Nphase)(i) ==
Approx(velocity(i)).epsilon(Tolerance));
// Apply velocity constraints
REQUIRE(node->assign_velocity_constraint(0, 10.5) == true);
REQUIRE(node->compute_acceleration_velocity(Nphase, dt) == true);
// Test velocity with constraints
velocity << 10.5, 0.03;
for (unsigned i = 0; i < velocity.size(); ++i)
REQUIRE(node->velocity(Nphase)(i) ==
Approx(velocity(i)).epsilon(Tolerance));
// Test acceleration with constraints
acceleration[0] = 0.;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
// Apply cundall damping when calculating acceleration
REQUIRE(node->compute_acceleration_velocity_cundall(Nphase, dt, 0.05) ==
true);
// Test acceleration with cundall damping
acceleration << 0., 0.1425;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
// Exception check when mass is zero
mass = 0.;
// Update mass to 0.
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(mass).epsilon(Tolerance));
REQUIRE(node->compute_acceleration_velocity(Nphase, dt) == false);
}
SECTION("Check momentum, velocity and acceleration") {
// Time step
const double dt = 0.1;
// Check momentum
Eigen::Matrix<double, Dim, 1> momentum;
for (unsigned i = 0; i < momentum.size(); ++i) momentum(i) = 10.;
// Check initial momentum
for (unsigned i = 0; i < momentum.size(); ++i)
REQUIRE(node->momentum(Nphase)(i) == Approx(0.).epsilon(Tolerance));
// Check update momentum to 10
REQUIRE_NOTHROW(node->update_momentum(true, Nphase, momentum));
for (unsigned i = 0; i < momentum.size(); ++i)
REQUIRE(node->momentum(Nphase)(i) == Approx(10.).epsilon(Tolerance));
// Check update momentum to 20
REQUIRE_NOTHROW(node->update_momentum(true, Nphase, momentum));
for (unsigned i = 0; i < momentum.size(); ++i)
REQUIRE(node->momentum(Nphase)(i) == Approx(20.).epsilon(Tolerance));
// Check assign momentum to 10
REQUIRE_NOTHROW(node->update_momentum(false, Nphase, momentum));
for (unsigned i = 0; i < momentum.size(); ++i)
REQUIRE(node->momentum(Nphase)(i) == Approx(10.).epsilon(Tolerance));
// Check zero velocity
for (unsigned i = 0; i < Dim; ++i)
REQUIRE(node->velocity(Nphase)(i) == Approx(0.).epsilon(Tolerance));
// Check mass
double mass = 0.;
REQUIRE_NOTHROW(node->update_mass(false, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(0.0).epsilon(Tolerance));
// Compute and check velocity this should throw zero mass
node->compute_velocity();
mass = 100.;
// Update mass to 100.5
REQUIRE_NOTHROW(node->update_mass(true, Nphase, mass));
REQUIRE(node->mass(Nphase) == Approx(100.).epsilon(Tolerance));
// Compute and check velocity
node->compute_velocity();
for (unsigned i = 0; i < Dim; ++i)
REQUIRE(node->velocity(Nphase)(i) == Approx(0.1).epsilon(Tolerance));
// Check acceleration
Eigen::Matrix<double, Dim, 1> acceleration;
for (unsigned i = 0; i < acceleration.size(); ++i) acceleration(i) = 5.;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) == Approx(0.).epsilon(Tolerance));
REQUIRE_NOTHROW(node->update_acceleration(true, Nphase, acceleration));
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) == Approx(5.).epsilon(Tolerance));
// Check if exception is handled
Eigen::Matrix<double, Dim, 1> acceleration_bad;
for (unsigned i = 0; i < acceleration_bad.size(); ++i)
acceleration_bad(i) = 10.;
unsigned bad_phase = 3;
// Exception handling invalid acceleration dimension
// TODO Assert: REQUIRE_NOTHROW(node->update_acceleration(true,
// bad_phase, acceleration_bad));
// Check if exception is handled
bad_phase = 1;
// Exception handling invalid momentum dimension
// TODO Assert:
// REQUIRE_NOTHROW(node->update_momentum(true, bad_phase, momentum) ==
// false); Exception handling invalid momentum dimension
// TODO Assert:
// REQUIRE_NOTHROW(node->update_momentum(false, bad_phase, momentum) ==
// false);
// Check velocity before constraints
Eigen::Matrix<double, Dim, 1> velocity;
velocity << 0.1, 0.1;
for (unsigned i = 0; i < velocity.size(); ++i)
REQUIRE(node->velocity(Nphase)(i) ==
Approx(velocity(i)).epsilon(Tolerance));
// Check acceleration before constraints
acceleration << 5., 5.;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
SECTION("Check Cartesian velocity constraints") {
// Apply velocity constraints
REQUIRE(node->assign_velocity_constraint(0, -12.5) == true);
// Check out of bounds condition
REQUIRE(node->assign_velocity_constraint(2, 0.) == false);
// Apply constraints
node->apply_velocity_constraints();
// Check apply constraints
velocity << -12.5, 0.1;
for (unsigned i = 0; i < velocity.size(); ++i)
REQUIRE(node->velocity(Nphase)(i) ==
Approx(velocity(i)).epsilon(Tolerance));
acceleration << 0., 5.;
for (unsigned i = 0; i < acceleration.size(); ++i)
REQUIRE(node->acceleration(Nphase)(i) ==
Approx(acceleration(i)).epsilon(Tolerance));
}
SECTION("Check general velocity constraints in 1 direction") {
// Apply velocity constraints