Metal Deformation Mechanics Analysis Based on Mesoscopic Microstructure

Abstract

The stretchable thin film thermo-electron devices have fast development and the key technology for them is that they can guarantee the integrity of the structure and function under the condition of large deformation. In this work, the serpentine crosslinking conductor was selected for investigating the deformation and mechanical characteristics of metal material microstructure in the mesoscopic scale. The constitutive model for crystalline plasticity theory was introduced, and the constitutive relation was compiled using Fortran programming language, which was combined with the material constitutive subroutine UMAT in ABAQUS, to conduct the crystal plasticity research. During the processing, the mesh generation was especially added to improve the existing method of finite element calculation. An improved finite element model can be established to obtain the large extension ratio by defining the large deformation constitutive model and refining the grain boundary. We provide a feasible prediction method for the deformation mechanical behavior of Serpentine crosslinking conductor.