Add Drucker-Prager plasticity with apex return - #10

Open

petlenz wants to merge 25 commits into

mainfrom

feature/drucker-prager

Commits on Apr 22, 2026

Add J2 plasticity with policy-based yield functions and material_ref
petlenz
committed
04b1f12
Add general plasticity framework alongside monolithic J2
petlenz
committed
4f06427
Remove untested decomposed plasticity files — dead code with wrong tangent
petlenz
committed
7bfa3b2
Apply code review fixes
petlenz
committed
7cc18c7
Add Butcher tableau RK integrators with curing validation
petlenz
committed
b3d79a5
Replace hand-rolled Gaussian elimination with Eigen LU in implicit RK integrator
petlenz
committed
0362599
Use Eigen matrices for Butcher tableau and all RK integrators
petlenz
committed
9770b48
Pre-allocate all RK working vectors — zero heap allocation per compute()
petlenz
committed
8e2dd77
DIRK: pre-compute stage types and diagonal values at construction
petlenz
committed
fdf8ed4
Add decomposed plasticity_integrator with machine-precision tangent
petlenz
committed
8645dcb
Add rk_plasticity: multi-stage Butcher tableau return mapping
petlenz
committed
8594260
Consolidate: 6 files → 2 (unified RK integrator + plasticity with tableau)
petlenz
committed
6832bb6
Split plasticity into clean simple + RK classes with shared utils
petlenz
committed
6150c21

Commits on May 17, 2026

Add Drucker-Prager apex return, fix tangent consistency, refactor return mapping
petlenz
committed
aaa6614

Commits on Aug 18, 2026

Commits on Aug 19, 2026

cmake: use include(CTest), the standard testing entry point
petlenz
committed
9c26167

Commits on Aug 22, 2026

materials: test the Drucker-Prager apex return
petlenz
committed
6644ec2