v0.5.0

Peridynamics v0.5.0

Diff since v0.4.2

Breaking Changes

• Constitutive models: Removed MooneyRivlin and added NeoHookePenalty as a replacement
• RKC Materials: Improved regularization for the inversion of the moment matrix; therefore, the regfactor keyword argument in RKCMaterial and RKCRMaterial has been removed and replaced with the new lambda and beta keywords
• Default constitutive model: CMaterial, BACMaterial, RKCMaterial, and RKCRMaterial now default to SaintVenantKirchhoff() instead of LinearElastic()

New Features

• Generalized Bond-Based Material: New GBBMaterial (also called GPMB in literature) using weighted volume approach instead of spherical neighborhood assumption
• Parameter Study Framework: New Study type for managing multiple simulation configurations with automatic progress tracking and resume capability via submit! and process_each_job
• Newton-Raphson Solver: Experimental implicit quasi-static solver NewtonRaphson with a new displacement boundary conditions function displacement_bc!

General Improvements

• Enhanced Export:
  • New export fields, such as strain_energy_density or stress tensors for correspondence materials
  • Exported fields that are not necessary for the force density computations are only computed on demand for the time steps where they are exported
• Enhanced Logging:
  • Improved error logging in submit(job) and submit!(study) for better tracking and debugging on HPC systems
  • Better path and vector formatting in logs with line wrapping support
  • Export options now logged at simulation start
• MPI Handling:
  • New barrier keyword argument for process_each_export
  • New mpi_barrier function for explicitly placing MPI barriers
• Bug Fixes:
  • Fixed force density initialization in data handlers
  • Each material model now uses its own strain energy density calculation methods for surface correction
  • Corrected stress tensor exports for correspondence materials
  • Fixed boundary condition application order
• Documentation Updates:
  • Reorganized API reference (separate sections for types, functions, macros, and experimental features)
  • Added experimental feature warnings
  • Improved constitutive model documentation with mathematical formulations
  • Enhanced RKC material documentation with more regularization details
• Internal Changes:
  • Refactored condition handling with new ConditionHandler type
  • Enhanced storage field management across different solvers
  • Better separation of solver-specific and material-specific storage fields
  • Enhanced degree-of-freedom management with new utility functions (get_n_dof, each_dof, etc.)

Merged pull requests:

• Bump actions/checkout from 4 to 5 (#233) (@dependabot[bot])
• Introducing a boundary condition handler (#234) (@kaipartmann)
• Custom export fields (#236) (@kaipartmann)
• Constitutive models (#237) (@kaipartmann)
• Enhanced stress support for correspondence-based models (#238) (@kaipartmann)
• Surface correction with model-specific strain energy density (#239) (@kaipartmann)
• Experimental: Newton Raphson solver (only serial) (#240) (@kaipartmann)
• Test coverage (#243) (@kaipartmann)
• Create parameter study framework (#244) (@kaipartmann)
• Restarted studies now fixed (#245) (@kaipartmann)
• Fix the ESC bug (#247) (@kaipartmann)
• Fix incorrect init in Dual Horizon BB (#248) (@kaipartmann)
• Improvements of the RKC- and RKCRMaterial (#249) (@kaipartmann)
• Logging during simulations and MPI handling (#252) (@kaipartmann)
• Generalized bond-based material (#253) (@kaipartmann)

Closed issues:

• Energy Surface Correction for DHBB material (#221)
• Energy density (#224)
• Bug with EnergySurfaceCorrection (#246)