流固耦合模态分析实例1..doc

圆环在水中（模态分析）【ANSYS】 默认分类 2009-11-18 16:48:28 阅读31 评论0 字号：大中小 finish /clear /PREP7 !定义单元类型 ET,1,PLANE42 ! structural element ET,2,FLUID29 ! acoustic fluid element with ux uy ET,3,129 ! acoustic infinite line element r,3,0.31242,0,0 ET,4,FLUID29,,1,0 ! acoustic fluid element without ux uy !材料属性 MP,EX,1,2.068e11 MP,DENS,1,7929 MP,NUXY,1,0 MP,DENS,2,1030 MP,SONC,2,1460 ! 创建四分之一模型 CYL4,0,0,0.254,0,0.26035,90 CYL4,0,0,0.26035,0,0.31242,90 ! 选择属性,网格划分 ASEL,S,AREA,,1 AATT,1,1,1,0 LESIZE,1,,,16,1 LESIZE,3,,,16,1 LESIZE,2,,,1,1 LESIZE,4,,,1,1 MSHKEY,1 MSHAPE,0,2D ! mapped quad mesh AMESH,1 ASEL,S,AREA,,2 AATT,2,1,2,0 LESIZE,5,,,16,1 LESIZE,7,,,16,1 LESIZE,6,,,5 LESIZE,8,,,5 MSHKEY,0 MSHAPE,0,2D ! mapped quad mesh AMESH,2 ! 关于Y轴镜像 nsym,x,1000,all ! offset node number by 1000 esym,,1000,all ! 关于y轴镜像 nsym,y,2000,all ! offset node number by 2000 esym,,2000,all NUMMRG,ALL ! merge all quantities esel,s,type,,1 nsle,s esln,s,0 nsle,s esel,inve 反选单元nsle,s emodif,all,type,4 esel,all nsel,all ! 指定无限吸收边界 csys,1 nsel,s,loc,x,0.31242 type,3 real,3 mat,2 esurf esel,all nsel,all ! 标识流固交接面 nsel,s,loc,x,0.26035 esel,s,type,,2 sf,all,fsi,1 nsel,all esel,all FINISH /solu antype,modal modopt,damp,10 mxpand,10,,,yes solve finish 水箱盛水【ANSYS】 默认分类 2009-11-18 16:48:38 阅读61 评论0 字号：大中小 length=2 width=3 height=2 /prep7 et,1,63 et,2,30 !选用FLUID30单元，用于流固耦合问题 r,1,0.01 mp,ex,1,2e11 mp,nuxy,1,0.3 mp,dens,1,7800 mp,dens,2,1000 !定义Acoustics材料来描述流体材料-水 mp,sonc,2,1400 mp,mu,0, ! block,,length,,width,,height esize,0.5 mshkey,1 ! type,1 mat,1 real,1 asel,u,loc,y,width amesh,all alls ! type,2 mat,2 vmesh,all fini /solu antype,2 modopt,unsym,10 !非对称模态提取方法处理流固耦合问题 eqslv,front mxpand,10,,,1 nsel,s,loc,x, nsel,a,loc,x,length nsel,r,loc,y d,all,,,,,,ux,uy,uz, nsel,s,loc,y,width, d,all,pres,0 alls asel,u,loc,y,width, sfa,all,,fsi !定义流固耦合界面 alls solv fini /post1 set,first plnsol,u,sum,2,