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Generic material test structure: registry conformance, property contract, tangent conformance

enhancementNew feature or requestNew feature or request

Status: Open.

#35 In NumSim-Stack/numsim-materials;

· petlenz opened on Aug 22, 2026

Six materials have no unit tests

help wantedExtra attention is neededExtra attention is needed

Status: Open.

#34 In NumSim-Stack/numsim-materials;

· petlenz opened on Aug 22, 2026

8 materials are not registered in the factory, so a JSON model cannot express plasticity

bugSomething isn't workingSomething isn't working

Status: Open.

#33 In NumSim-Stack/numsim-materials;

· petlenz opened on Aug 22, 2026

Decompose the elastic stiffness into its own material so the graph can order (and recompute) it

Status: Open.

#24 In NumSim-Stack/numsim-materials;

· petlenz opened on Aug 12, 2026

feature/vector-solver: plastic strain accumulates during elastic unloading (regression vs aaa6614, caught by numsim-codegen e2e gate)

Status: Open.

#22 In NumSim-Stack/numsim-materials;

· petlenz opened on Aug 2, 2026

vector_newton: robustness and coverage follow-ups from review

Status: Open.

#21 In NumSim-Stack/numsim-materials;

· petlenz opened on Jul 29, 2026

Physics integration tests for vector_newton: two-surface plasticity and kinematic hardening

Status: Open.

#20 In NumSim-Stack/numsim-materials;

· petlenz opened on Jul 29, 2026

Consistent algorithmic tangent for vector_newton via the implicit function theorem

Status: Open.

#19 In NumSim-Stack/numsim-materials;

· petlenz opened on Jul 29, 2026

Feature: recording post-processor — buffer graph properties to memory, write VTK / CSV / other output

Status: Open.

#18 In NumSim-Stack/numsim-materials;

· petlenz opened on Jul 29, 2026

Feature: mixed-type coupled solver (scalar + tensor unknowns) with symmetry-aware tensor↔vector mappers (Mandel)

Status: Open.

#15 In NumSim-Stack/numsim-materials;

· petlenz opened on Jul 27, 2026

Feature: multi-variable (vector) nonlinear solver — coupled Newton for R(x)=0, x ∈ ℝⁿ

Status: Open.

#14 In NumSim-Stack/numsim-materials;

· petlenz opened on Jul 27, 2026

backward_euler::solve() hardcodes a non-negativity clamp (std::max(x,0)) — plasticity-specific, not a general scalar Newton solver

Status: Open.

#13 In NumSim-Stack/numsim-materials;

· petlenz opened on Jul 27, 2026