Recent Research and Developments of LS-DYNA's User Subroutine in JSTAMP/NV

Sheet metal forming simulation has been widely used in die design process, in order to make lightweight products ®and shorten production lead time. JSOL Corporation has been developing JSTAMP/NV since 1996 and continuously supplying the best stamping simulation environment for users. One of the most competitive advantages of JSTAMP/NV is its accuracy on the evaluation of formability when using explicit and implicit solutions in LS- ®DYNA . In this paper, new material model and user subroutine of anisotropic plasticity with temperature dependency were developed for hot forming simulation by authors. Using the developed material model, the formability of deep drawing of a magnesium alloy was estimated with the high accuracy compared with experimental results.