面向高性能塑性成形的多尺度建模仿真研究进展

Plastic forming is a process method that utilizes the plasticity of materials to generate plastic deformation, forming a certain shape and achieving certain performance. It is an indispensable and important way for component manufacturing. With the development of high-end equipment technology in China's aerospace and other fields, the high-precision and high-performance requirements of key components urgently require the development of computable and designable high-performance plastic forming theories and technologies. Multi-scale modeling and simulation is the key to achieving computable and designable process. However, the plastic forming process involves comprehensive problems such as material nonlinearity, geometric nonlinearity, and process nonlinearity, as well as complex processes such as mechanical and thermal loading, special energy field loading, and microstructure and performance evolution, making multi-scale modeling and simulation extremely difficult. This article starts from analyzing the scientific issues of high-performance plastic forming, and discusses the challenges faced by multi-scale modeling of plastic forming by sorting out the multi-scale deformation response characteristics of materials. The new progress in multi-scale coupled modeling and simulation in recent years, as well as its application in multi-scale mechanism analysis of plastic forming processes and high-performance forming process design, is presented, and its development trend is prospected.