Are there any examples showing the Coriolis effect in a harmonic response analysis?
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Yes, please see the ANSYS 8.0 example below. A full harmonic response analysis with PIPE16 elements is provided. Only a few ANSYS elements have this "SPIN" capability, including PIPE16. There are license restrictions for this ability, as well. fini /clear /title, Coriolis effect in a PIPE16 full harmonic response analysis /plopts,info,1 /pnum,area,1 /view,,1,2,3 /prep7 et,1,PIPE16 keyopt,1,7,1 r,1,6.0,0.25 ! outer diameter and wall thickness, inches rmodif,1,13,2000.0 ! pipe SPIN, radians per second mp,ex,1,30.0e6 ! Young's modulus, psi mp,nuxy,1,0.30 ! Poisson's ratio, unitless mp,dens,1,0.283/386.4 ! mass density, lbf-sec^2/in^4 k,1,0.0,0.0,0.0 k,2,0.0,0.0,120.0 ! 120" (10') pipe length l,1,2 esize,,10 lmesh,1 /eshape,1 eplot fini /solu antype,harmic ! harmonic response analysis hropt,full ! full harmonic response hrout,off ! print results as amplitudes and phase angles kbc,1 ! step applied boundary conditions nsubst,30 ! 30 intervals within frequency range outpr,basic,1 harfrq,0.0,30.0 ! frequency range from 0.0 to 30.0 Hz nsel,s,loc,z,0.0 d,all,all,0.0 ! no need to keep ROTZ free ... SPIN like OMEGA nsel,s,loc,z,120.0 f,all,fy,100.0 ! harmonic load in Y direction nsel,all save solve save fini /post26 numvar,200 nsol,2,2,u,x,n2ux ! store displacements nsol,3,2,u,y,n2uy nsol,4,2,u,z,n2uz nsol,5,2,rot,x,n2rotx nsol,6,2,rot,y,n2roty nsol,7,2,rot,z,n2rotz /title, Tip displacement in all three translations plvar,2,3,4 /wait,3 /title, Tip displacement in all three rotations plvar,5,6,7 /wait,3 /title, Tip displacement in UX translation only plvar,2 . |
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