请解答?

my628

*** ERROR ***okok.org CP =okok.org 36.656okok.org TIME= 10:38:57
TB,BISO table for material 1 has a second slope of its stress-strainokok.org
curve less than zero or greater than EX evaluated at temperature= 20.okok.org
怎么回事呢，解释下，谢谢春节愉快，幸福安康！！！

jinqinghai

材料定义有问题，检查检查一下。