Surface Waviness and Wrinkling in Sheet Metal Forming

本课题研究的是板料成形中一个具有重要科学技术意义的问题，即大型覆盖件成形中的起皱问题。该项目的科学内容包括两部分：(1)了解板料成形中各向异性材料的力学行为和这种材料本构关系的发展；(2)板料成形中起皱的不稳定性研究。

This project deals with a scientifically and technically important problem in sheet metal forming, namely the study of wrinkling in large panel forming. The scientific content of the project is comprised of two parts: (1) understanding the mechanical behavior of anistropic materials used in sheet metal forming and the development of constitutive relationship for such materials, and (2) the study of instabilities in sheet forming due to wrinkling.