Application of the Texture Component Crystal Plasticity FEM to Forming Simulation

摘要

In metal forming operations crystallographic texture can be regarded as the main source of elastic and plastic anisotropy. Simulations which aim at the reproduction of this behaviour must, therefore, be concerned with the representation of texture and its development. In the framework of FEM which is commonly used for such simulations the material constitutive law, i.e. the stress-strain law, has to account for texture and its development during forming. In the first part of the paper the recently introduced Texture Component Crystal Plasticity Finite Element Method is reviewed. It is basically a combination of a crystal plasticity FEM with a texture component method for the representation of statistical textures. The main focus of this part will be on the representation of the random texture fraction and the representation of the orientation scatter width. The second part of the paper focuses on the application of the method for predicting the earing behaviour during cup drawing. Finally an outlook will be given on the potential of the method for further applications like r-value determination.