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Dear All,
I am trying to model RVE with constant triaxiality with/without void using
ABAQUS. I am following the paper
Article Representative volume element calculations under constant st...
<https://www.researchgate.net/publication/272743177_Representative_volume_element_calculations_under_constant_stress_triaxiality_Lode_parameter_and_shear_ratio>
The model is for simplified 2D uniaxial tension and I am using MPC
subroutine and .INP file attached.
I am getting an error saying "ELEMENT PART-1-1.1 IS DISTORTING
EXCESSIVELY." I am not sure how to proceed. Please help.
Regards,
Akash
----------
SUBROUTINE MPC(UE,A,JDOF,MDOF,N,JTYPE,X,U,UINIT,MAXDOF,LMPC,
* KSTEP,KINC,TIME,NT,NF,TEMP,FIELD,LTRAN,TRAN)
C
INCLUDE 'ABA_PARAM.INC'
C
DIMENSION UE(MDOF),A(MDOF,MDOF,N),JDOF(MDOF,N),X(6,N),
* U(MAXDOF,N),UINIT(MAXDOF,N),TIME(2),TEMP(NT,N),
* FIELD(NF,NT,N),LTRAN(N),TRAN(3,3,N)
C
IF (JTYPE .EQ. 1) THEN
C
rho=1
C
u1m=U(1,2)
u2m=U(2,2)
u2n2=U(2,3)
C
UE(1)=(u1m+2*rho*(1+u2m)/(1+u1m)*(u2n2-u2m))
A(1,1,1)=1.0
A(1,1,2)=-1+2*rho*(1+u2m)*(u2n2-u2m)/(1+u1m)**2
A(1,2,2)=-2*rho*(u2n2-2*u2m-1)/(1+u1m)
A(1,1,3)=-2*rho*(1+u2m)/(u1m)
C
JDOF(1,1) = 1
JDOF(1,2) = 1
JDOF(2,2) = 2
JDOF(1,3) = 2
END IF
C
RETURN
END
[Non-text portions of this message have been removed]
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<p>Dear All,<br>
I am trying to model RVE with constant triaxiality with/without void using<br>
ABAQUS. I am following the paper<br>
Article Representative volume element calculations under constant st...<br>
<https://www.researchgate.net/publication/272743177_Representative_volume_element_calculations_under_constant_stress_triaxiality_Lode_parameter_and_shear_ratio><br>
The model is for simplified 2D uniaxial tension and I am using MPC<br>
subroutine and .INP file attached.<br>
I am getting an error saying "ELEMENT PART-1-1.1 IS DISTORTING<br>
EXCESSIVELY." I am not sure how to proceed. Please help.<br>
Regards,<br>
Akash<br>
<br>
----------<br>
<br>
SUBROUTINE MPC(UE,A,JDOF,MDOF,N,JTYPE,X,U,UINIT,MAXDOF,LMPC,
<br>
* KSTEP,KINC,TIME,NT,NF,TEMP,FIELD,LTRAN,TRAN)
<br>
C
<br>
INCLUDE 'ABA_PARAM.INC'
<br>
C
<br>
DIMENSION UE(MDOF),A(MDOF,MDOF,N),JDOF(MDOF,N),X(6,N),
<br>
* U(MAXDOF,N),UINIT(MAXDOF,N),TIME(2),TEMP(NT,N),
<br>
* FIELD(NF,NT,N),LTRAN(N),TRAN(3,3,N)
<br>
C
<br>
IF (JTYPE .EQ. 1) THEN
<br>
C
<br>
rho=1
<br>
C
<br>
u1m=U(1,2)
<br>
u2m=U(2,2)
<br>
u2n2=U(2,3)
<br>
C
<br>
UE(1)=(u1m+2*rho*(1+u2m)/(1+u1m)*(u2n2-u2m))
<br>
<br>
A(1,1,1)=1.0
<br>
A(1,1,2)=-1+2*rho*(1+u2m)*(u2n2-u2m)/(1+u1m)**2
<br>
A(1,2,2)=-2*rho*(u2n2-2*u2m-1)/(1+u1m)
<br>
A(1,1,3)=-2*rho*(1+u2m)/(u1m)
<br>
C
<br>
JDOF(1,1) = 1
<br>
JDOF(1,2) = 1
<br>
JDOF(2,2) = 2
<br>
JDOF(1,3) = 2
<br>
END IF
<br>
C
<br>
RETURN
<br>
END<br>
<br>
[Non-text portions of this message have been removed]<br>
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