_Abaqus_VUMAT (spring) _调用VUMAT (vspring)中主值的问题

嗨，我有问题调用主值。校长
值变成很大的值，使元素过剩。有
编码我创建如下:有问题吗??

k = 1, nblock吗


s11(k,1) = stressOld(k,1) + dd11*strainInc(k,1)+
1 dd12*strainInc(k,2)+ dd13*strainInc(k,3)

s11(k,2) = stressOld(k,2) + dd21*strainInc(k,1)+
1 dd22*strainInc(k,2)+ dd23*strainInc(k,3)

s11(k,3) = stressOld(k,3) + dd31*strainInc(k,1)+
1 dd32*strainInc(k,2)+ dd33*strainInc(k,3)

s11(k,4) = stressOld(k,4) + dd44*strainInc(k,4)

s11(k,5) = stressOld(k,5) + dd55*strainInc(k,5)

s11(k,6) = stressOld(k,6) + dd66*strainInc(k,6)

调用vspring (nblock, s11, eigVal, ndir, nshr)

s1 = min (eigVal (nblock, 1), eigVal (nblock, 2), eigVal (nblock 3))
s2 = max (eigVal (nblock, 1), eigVal (nblock, 2), eigVal (nblock 3))
s3 = eigVal (nblock, 3)

非常感谢你的帮助，非常感谢。