Matthias/explicit dloads

[matthiasneuner]

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[Copilot]

Pull request overview

Adds support for particle-based distributed loads in the explicit multiphysics solver path and updates/extends example tests to use the new explicit distributed-load capability (including updated Marmot particle-type identifiers).

Changes:

• Wire ParticleDistributedLoad into ExplicitMultiphysicsSolver.computeSystem() and add explicit distributed-load assembly.
• Extend Marmot particle wrapper with computeDistributedLoadExplicit(...) and mark select Cython modules as free-threading compatible.
• Update multiple example scripts’ Marmot particle-type strings and add a new explicit distributed-load regression example with a gold.csv.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
examples/143_marmot_sqcni_nsni_finite_strain_dload_plasticity_explicit_test/marmot_sqcni_nsni_dload_explicit_test.py	New explicit test case applying a particle distributed load and comparing to a gold result.
examples/143_marmot_sqcni_nsni_finite_strain_dload_plasticity_explicit_test/gold.csv	Gold output for the new explicit distributed-load regression test.
examples/142_marmot_sqcni_nsni_curved_boundary_explicit_test/marmot_sqcni_nsni_curved_boundary_explicit_test.py	Update Marmot particle-type identifier string.
examples/141_marmot_sqcni_nsni_finite_strain_plasticity_explicit_test/mpm_marmot_sqcni_nsni_finite_strain_plasticity_explicit_test.py	Update Marmot particle-type identifier string.
examples/141_marmot_sqcni_nsni_finite_strain_plasticity_explicit_test/marmot_sqcni_nsni_finite_strain_plasticity_explicit_test.py	Update Marmot particle-type identifier string.
examples/132_marmot_displacement_sqci_nsni_hexa_from_exodus_test/marmot_displacement_sqcni_nsni_hexa_from_exodus_test.py	Update Marmot particle-type identifier string.
examples/131_marmot_displacement_sqci_nsni_hexa_test/marmot_displacement_sqcni_nsni_hexa_test.py	Update Marmot particle-type identifier string.
examples/131_marmot_displacement_snni_nsni_hexa_test/marmot_displacement_snni_nsni_hexa_test.py	Update Marmot particle-type identifier string.
examples/130_marmot_displacement_sqcni_nsni_vci_dynamic_test/marmot_displacement_sqcni_nsni_vci_dynamic_test.py	Update Marmot particle-type identifier string.
examples/125_penalty_boundary_contact_constraint_test/marmot_mises_penalty_boundary_contact_test.py	Update Marmot particle-type identifier string.
examples/125_lagrangian_multilier_boundary_contact_constraint_test/marmot_mises_boundary_contact_test.py	Update Marmot particle-type identifier string.
examples/124_punching_problem/marmot_mises_punching_test.py	Update Marmot particle-type identifier string.
examples/123_quadratic_line_search_test/quadratic_line_search_test.py	Update Marmot particle-type identifier string.
edelweissmeshfree/solvers/explicitmultiphysicssolver.py	Add explicit particle distributed-load assembly and pass particleDistributedLoads through compute flow.
edelweissmeshfree/particles/marmot/marmotparticlewrapper.pyx	Add computeDistributedLoadExplicit(...) forwarding to Marmot C++ and mark module free-threading compatible.
edelweissmeshfree/particles/marmot/marmotparticlewrapper.pxd	Declare Marmot C++ computeDistributedLoadExplicit(...) for Cython binding.
edelweissmeshfree/meshfree/kernelfunctions/marmot/marmotmeshfreekernelfunction.pyx	Mark module free-threading compatible.

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[matthiasneuner]

@copilot check this PR if it is still relevant; fix potential collisions

[Copilot]

@copilot check this PR if it is still relevant; fix potential collisions

Checked and updated. I fixed the relevant collisions in 54df38e (particle distributed loads are now finalized at step end; corrected particle dload assembly docstring) and removed the Cython freethreading_compatible directives to avoid version-compatibility collisions. Minor header typo cleanup is in fbec707.