Optimum design of sheet metal crystal texture based on the finite-element method and discretized optimization algorithm

摘要

Recently, the computational simulation technology assisted in the development of the sheet metal fabrication design and formability test analysis. In this study, the computerized texture design system was newly developed to determine the idealcrystalline orientation distribution, which means the high formability of sheet metal. This design system consists of a formability analysis using the dynamic-explicit finite-element code based on the elastic/crystalline plasticity theory and thediscretized optimization code, which employed the "Simplex Method" and "Hybrid Method". The optimum crystal orientation combination of brass, copper and cube textures for aluminum alloy sheet metal with high formability was investigated and theperformance of the optimization algorithms was studied.