Considerations in the Experimental Determination of Constitutive Parameters forFinite Strain Plasticity

摘要

Various experimental procedures for measurement of quasi-static constitutiveparameters for finite strain elastoplasticity are discussed in relation to counterpart finite element analyses of specimen deformation. It is concluded that the usefulness of such analyses is limited by the assumption made in the formulations of current computer codes. Stress-strain relations, Finite element analysis, Thin-walled tubes, Elastoplasticity, Ductile materials, Torsion testing, Hydrocodes, Objective stress rates, Finite strain, Work hardening.