会DEFORM的大神们，帮帮忙吧，我在挤压过程中流变应力出现问题

大家好，我是个学生，刚接触 DEFORM 不久，在挤压没几步时就出新流变应力问题了，不知道哪出错了？请DEFORM的前辈们帮帮忙吧，小女子感激不尽了。问题如下： 10 0.1008635104E+14 0.5747703404E+03 0.4342150403E+04 37.408
Error:--illegal flow stress detected at element # 1 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.191882D+07 0.105535D+10 0.907695D+03 -0.282113D+16
Error:--illegal flow stress detected at element # 2 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.179774D+07 0.988759D+09 0.906406D+03 -0.250485D+16
Error:--illegal flow stress detected at element # 3 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.284398D+07 0.156419D+10 0.907253D+03 -0.622182D+16
Error:--illegal flow stress detected at element # 4 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.140317D+07 0.771744D+09 0.906457D+03 -0.152529D+16
Error:--illegal flow stress detected at element # 5 of Obj. 1
Strain, str. rate, temp. & flow stress are: 0.274975D+06 0.151236D+09 0.906477D+03 -0.585650D+14
More illegal flow stresses .....