3 Commits

Author	SHA1	Message	Date
Jukka Aho	bb3c3c0680	refactor(materials): Add @inline to PerfectPlasticity functions ... - Added @inline to is_finite_strain, has_state - Trait functions called in assembly loops - Performance optimization for plastic materials	2025-11-20 16:56:37 +02:00
Jukka Aho	7e1739a987	feat(materials): Declare PerfectPlasticity as StatefulStrainDependent ... - Add material_behavior(::PerfectPlasticity) = StatefulStrainDependent() - Enables generic integration with state variable handling - Requires displacement field and state for tangent computation - Single line trait declaration, zero code duplication	2025-11-19 10:03:45 +02:00
Jukka Aho	0e1f9778e7	feat(materials): Add PerfectPlasticity with radial return mapping ... New file src/materials/perfect_plasticity.jl implementing J2 plasticity: - PlasticityState struct storing plastic strain ε_p, backstress α, and κ - PerfectPlasticity struct with E, ν, yield stress σ_y, hardening H - Von Mises yield function: f = √(3/2)||dev(σ-α)|| - σ_y - Radial return mapping algorithm for plastic updates - Elastic predictor / plastic corrector scheme - Kinematic hardening with backstress evolution - Consistent tangent modulus for Newton convergence - 357 lines with comprehensive theory and algorithm documentation	2025-11-12 00:58:57 +02:00