遇见如下问题怎么处理啊？

我在用DEFORM进行计算时，出现如下错误提示，请问怎么处理啊？
材料参数是我自己添加的新材料。谢谢各位指点。
Error:--illegal flow stress detected at element # 39 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.000000D+00 0.100000D-01 0.120000D+03 0.000000D+00
Error:--illegal flow stress detected at element # 50 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.000000D+00 0.100000D-01 0.120000D+03 0.000000D+00
Error:--illegal flow stress detected at element # 55 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.000000D+00 0.100000D-01 0.120000D+03 0.000000D+00
Error:--illegal flow stress detected at element # 67 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.000000D+00 0.100000D-01 0.120000D+03 0.000000D+00
Error:--illegal flow stress detected at element # 131 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.000000D+00 0.100000D-01 0.120000D+03 0.000000D+00
More illegal flow stresses .....
Program stopped because of bad element shape!