周期对称结构的静力分析实例

/filname,ch08

/title,static analysis of compressor structuren with hole

/prep7

et,1,solid45 mp,ex,1,1.15e5 mp,prxy,1,0.30782 mp,dens,1,4.48e-9

k,1,226,,208.8 k,2,226,,258.7 k,3,157,,258.7 k,4,237.5,,220.3 k,5,229.2,,220.3 k,6,237.5,,208.8 k,7,126,,276.7 k,8,138,,276.7 k,9,102.5,,263 k,10,102.5,,248.7 k,11,237.5,,273.8 k,12,237.5,,264.1 k,13,135,,248.7 k,14,243.85,,273.8 k,15,243.85,,254.8 k,16,229.2,,254.8 k,17,162.5,,264.1

/pnum,kp,1 /pnum,line,1 /number,2 /view,1,,,-1 /auto,1

lstr,1,2 lstr,2,3 lstr,1,6 lstr,6,4 lstr,4,5 lstr,5,16 lstr,16,15 lstr,15,14 lstr,14,11 lstr,11,12 lstr,12,17

lstr,8,7 lstr,7,9 lstr,9,10 lstr,10,13 lplot

ltan,11,8 !创建切线 ltan,2,13 al,all

/pnum,line,0 /pnum,kp,0

k,18,,,, k,19,,,300

vrotat,all,,,,,,18,19,60 /view,1,1,1,1 /auto,1 save

wprot,30

cyl4,200,0,10,,,,300

!注意圆柱的深度方向是沿工作平面坐标系 !z向的； vsbv,1,2 save

/view,1,,,-1 /auto,1

wpcsys,-1,0 lstr,18,19 flst,2,2,8 fitem,2,0,0,0 fitem,2,220,0,0 circle,p51x,,,,60 flst,2,2,8 fitem,2,0,0,0 fitem,2,180,0,0 circle,p51x,,,,60

lsla,u !将与面关联的线从选择集中去除 /pnum,line,1 adrag,53,,,,,,52 adrag,54,,,,,,52 /pnum,line,0 allsel

aslv,u

vsba,all,all allsel wprot,,90 wprot,,,21 vsbw,all wprot,,,9 vsbw,all wprot,,,9 vsbw,all ldele,52,,,1 !删除轴线 csys,1

!激活坐标系转为总体柱坐标系 vsel,s,loc,x,180,220 cm,holevol,volu allsel vplot save

!定义周期对称分析选项

!定义高低角度组件

!即周期对称结构的对称边界

!组件命名时，前面的cyclic即为组件根名 asel,s,loc,y,0

cm,cyclic_m01l,area asel,s,loc,y, 60

cm,cyclic_m01h,area allsel

cyclic,6,60,1,’cyclic’

!此步为指定周期对称分析选项

!连接线和面以便于映射网格划分 esize,3

cmsel,s,holevol vsel,r,loc,y,21,30 aslv,s

wpcsys,-1,0 wprot,30 wpoff,200 cswpla,11,1

asel,u,loc,z,264.1 asel,u,loc,z,258.7

asel,u,loc,x,10 csys,1

asel,u,loc,y,30 accat,all lsla,s

lsel,r,loc,z,264.1 lccat,all lsla,s

lsel,r,loc,z,258.7 lccat,all

!生成网格，采用扫略网格划分 type,1

mshape,0,3d vsel,s,loc,y,0,21 vsweep,all

vsel,s,loc,y,21,30 vsel,u,loc,x,180,220 vsweep,all cmsel,s,holevol vsel,r,loc,y,21,30 vsweep,all

vsel,s,loc,y,0,30 asel,s,acca adele,all lsel,s,lcca ldele,all

csys,4

vsymm,y,all,,,,0,0 allsel

nummrg,all numcmp,all csys,1 nrotat,all save /solu

antype,static nsel,s,loc,x,237.5

nsel,r,loc,z,220.3,208.8 d,all,,,,,,ux,uy allsel

nsel,s,loc,z,208.8

d,all,,,,,,uy,uz allsel eplot save

omega,,,1191.11

nsel,s,loc,x,243.5

*get,no_nodes,node,,count f,all,fx,628232/no_nodes allsel save solve finish

/post1

plnsol,u,x,2,1 plnsol,u,y,2,1 plnsol,u,z,2,1 plnsol,u,sum,2,1 plnsol,s,x,0,1 plnsol,s,y,0,1 plnsol,s,z,0,1 plnsol,s,eqv,0,1 finish

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