Can solid272 match the first bending mode of pipe16?
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No, because it is similar to solid185 without enhanced strain (too stiff in bending.) For a bending application use solid273, which will match the first pipe16 cantilever bending mode exactly (see sample input below.) /prep7 et,1,273,,3 mp,ex,1,1e7 mp,nuxy,1,0.3 mp,dens,1,0.00025 k,1,2,0,0 k,2,2.5,0,0 k,3,2.5,100,0 k,4,2,100,0 a,1,2,3,4 lsel,s,line,,2,4,2 lesize,all,,,12 lsel,all lsel,s,line,,1,3,2 lesize,all,,,1 lsel,all amesh,1 allsel,all sectype,1,axis secdata,1,0,0,0,0,10,0 naxis allsel,all nsel,s,loc,y,0 d,all,all,0 nsel,all fini /solu antype,modal modopt,lanb,5 lumpm,on mxpand,5,,,yes solve fini /post1 set,1,1 /esha,1 plns,u,sum !!!!!!!!!!!Pipe16 input for comparison!!!!!!!!!! /prep7 et,1,16 mp,ex,1,1e7 mp,nuxy,1,0.3 mp,dens,1,0.00025 r,1,5,.5 n,1 n,11,,100 fill e,1,2 *repe,10,1,1, d,1,all /solu antype,modal modopt,lanb,1 lumpm,on mxpand,1,,,yes solve fini /post1 set,1,1 /esha,1 plns,u,sum |
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