A 2-dimension dynamic FEA model on plate straightening was established with the aid of elastic-plastic FEM. The 11 rolls straightening processes with different plate thickness and straightening schemes in certain factory were simulated with the model. 采用弹塑性有限元法建立中厚板矫直过程的二维动态有限元分析模型,并针对某厂11辊矫直机不同厚度板材、不同矫直方案的矫直过程进行了模拟计算。