Thermo Mechanical Coupling in Elasto-Plastic Analysis

Summary

The numerical solution of coupled nonlinear field problems is increasingly gaining importance. One of these problems is the thermo mechanical problem, where the temperature field and the displacement field of a structure underlying thermal and mechanical boundary conditions is determined. Within the context of mechanics and thermodynamics the field equations of the coupled thermo mechanical problem are developed. The constitutive equations of an elastic plastic material are extended to include thermal effects. The nonlinear system of equations is solved employing the Newton-Raphson solution technique for each increment. Therefore the complete linearization of the coupled problem is performed.