Learning Forum

[Falgun_abs]

I am creating a moving Gaussian heat source using APDL code. My aim is to get temperature result and then transfer load to Transient structural to measure residual stresses in welding. I am getting message "An unknown error occurred during solution. Check the Solver Output on the Solution Information object for possible causes." I am using student version of ANSYS 2021 R1. The APDL code is as following:

CSYS,0

CMSEL,ALL

*GET,EMAX,ELEM,NUM,MAX

*GET,EMIN,ELEM,NUM,MIN

ALLSEL

 

QL=1250

r0=0.006

d=0.005

PI=3.141

VEL=0.005

TAU=0

 

time_weld=6

time_inc=0.1

time_steps=time_weld/time_inc

NROPT,FULL

 

*DO,i,1,time_steps,1

WTIME=(i*time_inc)

TIME,WTIME

HCENTER==VEL*WTIME

 

*DO,jj,EMIN,EMAX,1

X=CENTRX(jj)

Y=CENTRY(jj)

Z=CENTRZ(jj)

CSI=-Z+(VEL*(TAU-WTIME))

 

Q=(QL/((PI)*(r0**2)*d))*exp((1-(X**2+CSI**2+Y**2)/r0**2)*(1-Y/d))

 

BFE,jj,HGEN,,Q

*ENDDO

SOLVE

*ENDDO

 

CMSEL,ALL

BFEDELE,ALL,ALL

ALLSEL

[Chandra Sekaran]

Please take a look at the 'Solution Information' --> Solver Output'. Or go to "solution --> right mouse click--> open solver files directory' and open solve.out file. Look for the word 'Error'. I expect it to be towards the end of this file. It could be due to some parameter not being defined in the APDL script or some other reason.

[Falgun_abs]

Thank you for your reply.
I am at beginner stage so please help me to understand these errors.
I am finding following warnings and errors:
*** WARNING ***CP =193.969TIME= 12:00:17
Material number 2 (used by element 18951) should normally have at least
one MP or one TB type command associated with it.Output of energy by
material may not be available.

*** ERROR ***CP =193.969TIME= 12:00:17
Present time 6 is less than or equal to the previous time 6 in a
transient analysis.

*** ERROR ***CP =194.078TIME= 12:00:17
The step data was checked and there were errors found.
Please check output or errors file