plasticity algorithm did not converge for MAT36E？ 100

请教各位大佬，dyna仿真时，出现Warning 40045 (SOL+45) plasticity algorithm did not converge for MAT36E for 1 elements怎么办做的是一个简单的单轴拉伸仿真，样件尺寸为20x70mm，网格尺寸为0.5mm。