Logarithmic interpolation of temperature dependent creep properties
In MAPDL, the TBIN command can be used to interpolate creep coefficients on a logarithmic scale. Sometimes this can be helpful with coefficients that span several orders of magnitude between temperatures. The default interpolation is always linear. In WB-Mechanical, this can only be done with a command object as of Release 2020-R2.
Below is a sample command sequence that shows how to set up the logarithmic scale for creep coefficients C1 and C5.
TBDELE,creep,matid
TB,creep,1,2,7,11
! Interpolate creep property C1 in LOG-LINEAR SCALE
TBIN,SCAL,Temp,1,LOG,LINE
! Interpolate creep property C5 in LOG-LINEAR SCALE
TBIN,SCAL,Temp,5,LOG,LINE
!
TBTEMP,1400
TBFIELD,Temp,400
TBDATA,1,1e-15,0,0,0,1e-40
TBDATA,7,0
!
TBFIELD,Temp,500
TBDATA,1,5.0e-13,3.6,-0.45,0,4.2e-37,14.8
TBDATA,7,0
Comments
Thank you @jjdoyle for sharing this info.
Karthik