晶体塑性有限元在材料动态响应研究中的应用进展

Advances in the Study of Dynamic Response of Crystalline Materials by Crystal Plasticity Finite Element Modeling

作为连续尺度上描述各向异性非均质材料弹塑性变形的重要模拟工具,晶体塑性有限元能够有效预测材料的宏观力学性能,在工程设计方面起着重要的作用。在实际工程应用中,许多晶体材料在高应力、高变形率、高温等极端条件下服役,此时各向异性非均匀的微介观结构演化是理解材料动态响应的关键,这给晶体塑性有限元带来了巨大的机遇和挑战。首先简要综述了晶体塑性有限元的原理和方法,然后着重介绍其在材料动态响应中的应用,最后展望其在材料动态响应模拟方面的发展方向。

As an important simulation tool for describing the elastoplastic deformation of anisotropic heterogeneous materials on continuum scales, crystal plasticity finite element (CPFE) modeling can effectively predict macroscopic mechanical properties of materials, thus plays a critical role in engineering design. In the practical engineering applications, many crystalline materials work at extreme conditions such as high stress, high deformation rate, and high temperature. The anisotropic heterogeneous microstructure evolutions under such conditions are the key factors to understanding the dynamic response of materials, and it brings great opportunities and challenges for CPFE. In this paper, we firstly review the theory and model of CPFE, and then introduce the applications of this method in study of dynamic response of crystalline materials, and discuss the challenges and open questions of CPFE in modeling material dynamic response at last.