ANALYSIS OF PLASTIC THERMAL STRESSES AND STRAINS IN FINITE THIN PLATE OF STRAIN-HARDENING MATERIAL

摘要

A practical method for obtaining the plastic deformations in a biaxial stress field is presented. The method is numerical, utilizing a system of successive approximations. There are no limitations regarding boundaries, loading history, stress-strain curves, or temperature dependence of material properties. The incremental theory of plasticity is used. Two examples are presented for strain-hardening materials:a thermally loaded long rectangular plate, and a thermally loaded square plate. Where possible, comparisons are made with existing solutions. The validity of certain approximations to the solution is also investigated.