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[求助]
vumat求助
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关于vumat求助 现在是报这个错误，我网上查的都说是程序里面有错误，但是我找不出文件里面哪里有问题，哪位大神可以帮忙找一下，非常感谢 Bad Material definition in element number 11 instance DERMIS-1: zero or negative initial dilatational modulus caused by bad material data. Please check your material input and any initial conditions if necessary. Abaqus/Explicit Packager exited with an error - Please see the status file for possible error messages if the file exists. parameter (zero = 0.d0, one = 1.d0, two = 2.d0, * three = 3.d0, third = 1.d0 / 3.d0, half = 0.5d0,four=4.d0) C10=0.2d0 D1=1e-5 ak=two/D1 amu=two*C10 twomu=four*C10 alamda=(three*ak-twomu)/three if (steptime.EQ.zero) then do i=1,nblock IF(cmname.eq.'B') THEN C10=0.2d0 D1=1e-5 ak=two/D1 amu=two*C10 twomu=four*C10 alamda=(three*ak-twomu)/three trace1=strainInc(i,1)+strainInc(i,2)+strainInc(i,3) stressNew(i,1)=stressOld(i,1)+ * twomu*strainInc(k,1)+alamda*trace1 stressNew(i,2)=stressOld(i,2)+ * twomu*strainInc(i,2)+alamda*trace1 stressNew(i,3)=stressOld(i,3)+ * twomu*strainInc(i,3)+alamda*trace1 stressNew(i,4)=stressOld(i,4)+ * twomu*strainInc(i,4) ELSEIF(cmname.eq.'A') THEN C10=7.2d0 D1=1e-5 ak=two/D1 amu=two*C10 twomu=four*C10 alamda=(three*ak-twomu)/three trace1=strainInc(i,1)+strainInc(i,2)+strainInc(i,3) stressNew(i,1)=stressOld(i,1)+ * twomu*strainInc(k,1)+alamda*trace1 stressNew(i,2)=stressOld(i,2)+ * twomu*strainInc(i,2)+alamda*trace1 stressNew(i,3)=stressOld(i,3)+ * twomu*strainInc(i,3)+alamda*trace1 stressNew(i,4)=stressOld(i,4)+ * twomu*strainInc(i,4) end if enddo else C do k=1,nblock IF(cmname.eq.'B') THEN C10=props(1) D1=props(2) ak=two/D1 amu=two*C10 twomu=four*C10 alamda=(three*ak-twomu)/three det=stretchNew(k,3)*(stretchNew(k,1)*stretchNew(k,2)- * stretchNew(k,4)**two) det2=(V(2,2)*V(1,1)-V(1,2)**two)*V(3,3) scale=det**( -ONE/THREE) stretchNewBar(k,1)=stretchNew(k,1)*scale stretchNewBar(k,2)=stretchNew(k,2)*scale stretchNewBar(k,3)=stretchNew(k,3)*scale stretchNewBar(k,4)=stretchNew(k,4)*scale BBar(k,1)=stretchNewBar(k,1)**two+stretchNewBar(k,4)**two BBar(k,2)=stretchNewBar(k,2)**two+stretchNewBar(k,4)**two BBar(k,3)=stretchNewBar(k,3)**two BBar(k,4)=stretchNewBar(k,1)*stretchNewBar(k,4) * +stretchNewBar(k,4)*stretchNewBar(k,2) TRBBar=BBar(k,1)+BBar(k,2)+BBar(k,3) EG=two*C10/det C PR=two/D1*(det-one) stressNew(K,1)=EG*(BBar(k,1)-TRBBar/Three)+PR stressNew(K,2)=EG*(BBar(k,2)-TRBBar/Three)+PR stressNew(K,3)=EG*(BBar(k,3)-TRBBar/Three)+PR stressNew(K,4)=EG*BBar(k,4) C Statenew(k,2)=sqrt(half*((StressNew(k,1)-StressNew(k,2))**two+ C * (StressNew(k,2)-StressNew(k,3))**two+(StressNew(k,3)- C * StressNew(k,1))**two)+three*StressNew(k,4)**two) s1=(stressNew(K,1)+stressNew(K,2))/two+ * sqrt(((stressNew(K,1)-stressNew(K,2))/two)**two+ *stressNew(K,4)**two) s2=(stressNew(K,1)+stressNew(K,2))/two- * sqrt(((stressNew(K,1)-stressNew(K,2))/two)**two+ *stressNew(K,4)**two) Statenew(k,2)=sqrt(((s1-s2)**two+(s1-stressNew(K,3))**two+ * (s2-stressNew(K,3))**two)/two) if(Statenew(k,2).gt.(7d0)) then statenew(k,1)=zero else statenew(k,1)=one end if if (stateold(k,1).eq.zero) then statenew(k,1)=zero end if C Update the enerInelasNew C C enerInelasNew(i) = enerInelasOld(i) + C * stressPower/density(i)-DEE enerInelasNew(k) = 0 ELSEIF(cmname.eq.'A') THEN C10=props(1) D1=props(2) ak=two/D1 amu=two*C10 twomu=four*C10 alamda=(three*ak-twomu)/three det=stretchNew(k,3)*(stretchNew(k,1)*stretchNew(k,2)- * stretchNew(k,4)**two) scale=det**(-ONE/THREE) stretchNewBar(k,1)=stretchNew(k,1)*scale stretchNewBar(k,2)=stretchNew(k,2)*scale stretchNewBar(k,3)=stretchNew(k,3)*scale stretchNewBar(k,4)=stretchNew(k,4)*scale BBar(k,1)=stretchNewBar(k,1)**two+stretchNewBar(k,4)**two BBar(k,2)=stretchNewBar(k,2)**two+stretchNewBar(k,4)**two BBar(k,3)=stretchNewBar(k,3)**two BBar(k,4)=stretchNewBar(k,1)*stretchNewBar(k,4) * +stretchNewBar(k,4)*stretchNewBar(k,2) C TRBBar=BBar(k,1)+BBar(k,2)+BBar(k,3) C BBar(k,1)=stretchNew(k,1)**two+stretchNew(k,4)**two-one C BBar(k,2)=stretchNew(k,2)**two+stretchNew(k,4)**two-one C BBar(k,3)=stretchNew(k,3)**two-one C BBar(k,4)=stretchNew(k,1)*stretchNew(k,4) C * +stretchNew(k,4)*stretchNew(k,2) TRBBar=BBar(k,1)+BBar(k,2)+BBar(k,3) EG=two*C10/det C EG=two*C10 PR=two/D1*(det-one) stressNew(K,1)=EG*(BBar(k,1)-TRBBar/Three)+PR stressNew(K,2)=EG*(BBar(k,2)-TRBBar/Three)+PR stressNew(K,3)=EG*(BBar(k,3)-TRBBar/Three)+PR stressNew(K,4)=EG*BBar(k,4) C Statenew(k,2)=sqrt(half*((StressNew(k,1)-StressNew(k,2))**two+ C * (StressNew(k,2)-StressNew(k,3))**two+(StressNew(k,3)- C * StressNew(k,1))**two)+three*StressNew(k,4)**two) s1=(stressNew(K,1)+stressNew(K,2))/two+ * sqrt(((stressNew(K,1)-stressNew(K,2))/two)**two+ *stressNew(K,4)**two) s2=(stressNew(K,1)+stressNew(K,2))/two- * sqrt(((stressNew(K,1)-stressNew(K,2))/two)**two+ *stressNew(K,4)**two) Statenew(k,2)=sqrt(((s1-s2)**two+(s1-stressNew(K,3))**two+ * (s2-stressNew(K,3))**two)/two) if(Statenew(k,2).gt.(26.d0)) then statenew(k,1)=zero else statenew(k,1)=one end if if (stateold(k,1).eq.zero) then statenew(k,1)=zero end if |
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2楼2022-06-16 19:34:54
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