2 Commits

Author	SHA1	Message	Date
Jukka Aho	8f198752ac	feat(materials): Add LinearElastic material model with Tensors.jl ... New file src/materials/linear_elastic.jl implementing Hooke's law: - LinearElastic struct with Young's modulus E and Poisson's ratio ν - Input validation: E > 0, -1 < ν < 0.5 - Helper functions: λ() and μ() compute Lamé parameters - compute_stress() implements σ = λ·tr(ε)·I + 2μ·ε - Tangent modulus: 𝔻 = λ·I⊗I + 2μ·��ˢʸᵐ - Zero-allocation with SymmetricTensor types - Simplified interface without state management - 180 lines with comprehensive documentation	2025-11-12 00:58:23 +02:00
Jukka Aho	ac071b5d57	feat(materials): Add AbstractMaterial type hierarchy and interface ... New file src/materials/abstract_material.jl defining material model architecture: - AbstractMaterial base type for all materials - AbstractElasticMaterial for stateless materials (no history) - AbstractPlasticMaterial for stateful materials (plastic strain, etc.) - compute_stress() interface: (material, ε, state_old, Δt) → (σ, 𝔻, state_new) - State management convention for Newton iterations - Thread-safe and GPU-compatible design principles - 229 lines with comprehensive documentation and examples	2025-11-12 00:58:06 +02:00