Lecture 17: Modeling of Elasto-Plastic and Creep Response I

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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