Creep and inelasticity¶
Time-dependent and path-dependent materials require more than a rate formula. AgentFEM treats committed/trial state, consistent linearization, cutback, rollback, restart, output, and benchmark evidence as part of the material's global finite-element contract.
Current boundary¶
- 3D global power-law creep with regional materials, backward Euler, shared quadrature state, analytical tangent, physical-time cutback, creep fields, dissipation, and portable full-Step restart;
- MPI-safe regional quadrature updates and rank-count-portable J2/creep full-Step archives; J2 distributed global Newton has public thick-cylinder structural evidence, while the creep route retains a NAFEMS structural promotion gate;
- optional scalar or finite-element temperature input consumed at creep integration points by a normalized Arrhenius rate law;
- Kachanov–Rabotnov, Sinh, and related relations at explicitly marked material-point/evaluation maturity unless a global consumer is present;
- modified-theta projection as a curve-assessment tool;
- small-strain J2 plasticity through a stateful global route.
The maturity label is part of the interface: the presence of a formula does not silently imply a validated global analysis procedure.