I need to do a sequential thermal-stress analysis. My thermal model contains corner noded solids and LINK32 line elements. I am trying to use BFINT to interpret temperature results onto a structural model that has midside noded solids and BEAM3 elements. The temperatures on the LINK32s are not being transferred to the corresponding beams. Is there a way to do this in ANSYS?
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Based on the documentation for submodeling, it is apparent that BFINT is not intended to handle temperature data from LINK32, because the submodel technique is documented to apply to shells and solids only. (The model may contain other element types, but the cut boundary must pass through shells or solids. BFINT is considered to be a cut-boundary interpolation operation.) If there is a one-to-one correspondence between the LINK32 and BEAM3 nodes, then it is possible to select just those nodes and do an LDREAD of temperature data for the LINK32/BEAM3 nodes. The input below demonstrates the procedure for a mixed mesh of solids and link/beam elements.. ! This model has been tested with ANSYS 7.1 and 8.1 -- April 21, 2004 fini /clear /prep7 n,1 n,6,5.0 fill,1,6 n,7,0,1 n,8,1,1 ngen,2,2,7,8,,4 et,1,PLANE55 et,2,LINK32 r,2,0.25 mp,kxx,1,1000 type,1 mat,1 e,1,2,8,7 e,5,6,10,9 type,2 real,2 e,2,3 e,3,4 e,4,5 save,therm,db fini /solu d,1,temp,0,,7,6 d,6,temp,100,,10,4 solve fini /prep7 mp,ex,1,10000 mp,nuxy,1,0.3 mp,alpx,1,.0001 et,1,PLANE82 et,2,BEAM3 r,2,.25,.08333,2.0 type,1 emid,add,all save,stress,db nwrite finish /post1 resume,therm,db file,,rth set bfint fini /solu resume,stress,db /inp,,bfin,,:BF1 nsel,s,,,2,4,1 ldread,temp,,,,,,rth nsel,all d,1,all,0,,7,6 d,6,all,0,,10,4 lswrite,1 ! This file created just to have a handy listing of all loads, for checking purposes solve fini |
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