Effects of anisotropic yield criteria on the spring-back s FEM simulating of stainless stell sheet s cold-roll forming process;

Inorder to reduce periodicity of cold-roll forming processs and improve the quality of products and me- chanical property the explicit dynamic finite element method with the software of ANSYS/LS-DYNA to simulate the cold-roll forming processs of channel stell,is studied including deforme,stresses and stains in the forming process.

The basic principles and arithmetic of FEM numerical simulation of cold roll forming process are reviewed in this paper,the large structural analysis program ANSYS/LS-DYNA is used to simulate cold-roll forming progress,analyze the simulating results,and gain the theory and technology which are useful to directing real manufacturing.

A kind of rectangular hollow I-beam made of two M-type steels,which were rolled by cold bend forming machine with plate or strip under the condition of room temperature and were welded together,was Introduced.

According to the mechanism of equivalent function between imposed on the slab by the force of shaping roll and needed to get the desired shape in this step,a theoretical expression for calculating cold bend forming force is presented on the basis of previous work.