How could a PSD response analysis of a fuel tank, including fuel, be done?
In the PSD analysis below, a 0.5 inch thick steel container is modeled with SHELL63. Inside the container, a fluid is modeled with FLUID80. /prep7 et,1,80 mp,ex,1,1e7 mp,dens,1,.0001 block,,100,,100,,200 esize,50 vmesh,1 et,2,63 r,2,.5 mp,ex,2,3e7 mp,nuxy,2,0.4 mp,dens,2,.00075 type,2 real,2 mat,2 nsel,s,loc,x,0 nsel,a,loc,x,100 nsel,a,loc,y,0 nsel,a,loc,y,100 nsel,a,loc,z,200 esurf alls nsel,s,loc,z,0 d,all,all nsel,all fini /solu antype,modal modop,lanb,10 mxpand,10 solve fini /solu antyp,spectrum spopt,psd psdfrq,1,,1,100 psdval,1,1,1 nsel,s,loc,z,0 d,all,uy,1 nsel,all pfact,1 psdcom solve fini /post1 set,3,1 plns,uy |
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