LPM-C

A multi-threaded implementation of a nonlocal lattice particle method (LPM) using an iterative solution procedure. Below shows the image of slip system activation in a SENT sample [1].

Prerequisites

• Linux operating system (also work in Windows or other systems, but require different building procedures)
• C++ software development environment
• CMake version 13+

Building instructions

Intel MKL environment

1. go to the Intel oneAPI website (https://www.intel.com/content/www/us/en/developer/tools/oneapi/overview.html) download and install the base and hpc toolkits (install 2021.4+ version of oneAPI to have a proper support for CMake)
2. source /your-oneapi-directory/setvars.sh linux64 --force
3. install Ninja: sudo apt-get install ninja-build
4. note: you may need to add the MKL include path into your editor preference (like VS Code)

Compile and run LPM-C

1. Clone the project source files into your own machine: git clone https://github.com/ymlasu/LPM-C.git
2. mkdir build & cd build
3. cmake .. -G "Ninja" -DMKL_INTERFACE=lp64
4. cmake --build . -j 8

Run the code

./lpmc

The results will be in the build folder.

Default numerical example

A 3D simple cubic lattice example under cyclic loading for isotropic hardening elastoplastic material is provided by default in ./src directory.

Examples

There are some example codes in the ./examples folder that contains additional numerical cases in [1, 2]. They define the main() functions of the project. One should change the example file name to "lpmc_project.c" and replace it with the same file in ./src directory then run the code (possibly require some other modifications).

References

1. Meng C, Wei H, Chen H, et al. Modeling plasticity of cubic crystals using a nonlocal lattice particle method[J]. Computer Methods in Applied Mechanics and Engineering, 2021, 385: 114069.

2. Meng C, Liu Y. Nonlocal Damage-enhanced Plasticity Model for Ductile Fracture Analysis Using a Lattice Particle Method[J]. arXiv preprint arXiv:2108.01214, 2021.