I have a case where I would like to analyze the deflections of a structure due to an
impinging sound wave, and the subsequent re-radiation of sound due to this structural motion.
Can this be done in ANSYS?
|
Yes, using the Fluid-Structure Interface. The input below is a transient analysis of a 100 psi pressure wave traveling in water and impinging on an aluminum SOLID45 cantilever. /prep7 block,,1,,20,,.25 wpoff,,,.25 block,,1,,20,,50 nummrg,kp !!! Structure et,1,45 mp,ex,1,1e7 mp,nuxy,1,.3 mp,dens,1,.00025 esize,1 vmesh,1 !!! Water et,2,30 mp,sonc,2,59000 ! speed of sound in water in/sec mp,dens,2,.0001 ! mass density of water type,2 mat,2 vmesh,2 !!! apply fluid-structure interaction nsel,s,loc,z,.25 esln esel,r,enam,,30 sf,all,fsi,1 alls !!! structural support esel,s,enam,,45 nsle nsel,r,loc,y,0 d,all,all alls fini /solu antype,trans time,.0001 nsel,s,loc,z,50.25 d,all,pres,100 ! 100 psi pressure pulse nsel,all outres,all,1 save solve time,.0002 nsel,s,loc,z,50.25 d,all,pres,0 nsel,all solve time,.0022 nsub,20 solve fini /post1 /view,1,1 !!! animate pressure over time !!! animate structural motion over time esel,s,enam,,45 nsle ... |
||
|