Topics: Modeling of elasto-plastic and creep response I

• Basic considerations in modeling inelastic response
• A schematic review of laboratory test results, effects of stress level, temperature, strain rate
• One-dimensional stress-strain laws for elasto-plasticity, creep, and viscoplasticity
• Isotropic and kinematic hardening in plasticity
• General equations of multiaxial plasticity based on a yield condition, flow rule, and hardening rule
• Example of von Mises yield condition and isotropic hardening, evaluation of stress-strain law for general analysis
• Use of plastic work, effective stress, effective plastic strain
• Integration of stresses with subincrementation
• Example analysis: Plane strain punch problem
• Example analysis: Elasto-plastic response up to ultimate load of a plate with a hole
• Computer-plotted animation: Plate with a hole

Instructor: Klaus-Jürgen Bathe