我做得桥壳分析

320

我做的是汽车后桥的模态分析，因为是新手，所以存在很多的不足，希望各位朋友批评指正，以下是我的命令流

320

上面那个有点问题，这是改正过的
/filname,exercise   
/prep7  
/title,qiaoke ansysis   
et,1,181
r,1,0.014   
mp,ex,1,199e9  
mp,nuxy,1,0.27
mp,dens,1,7827
k,1,-0.592,
k,2,-0.592,0.079
k,3,-0.354  
k,4,-0.592,0.079,-0.079
l,1,2   
l,2,4   
lfillt,1,2,0.03
k,7,-0.49,0.079,-0.03   
k,8,-0.57,0.079,-0.03   
k,9,-0.57,0.079,-0.079  
k,10,-0.49,0.079,-0.079
k,11,-0.412,0.079,-0.03
k,12,-0.412,0.079,-0.079
k,13,-0.10307,0.079,-0.03   
k,14,-0.10307,0.22226,-0.079
kdele,13
k,13,-0.10307,0.22226,-0.03
csys,1  
k,15,0.245,90,-0.03
k,16,0.245,90,-0.079
l,13,15
l,14,16
l,15,16
l,13,14
csys,0  
l,11,13
l,11,12
l,12,14
l,7,11  
l,7,10  
l,10,12
l,8,7   
l,8,9   
l,9,10  
l,6,8   
l,4,9   
al,2,17,15,18   
al,15,14,12,16  
al,12,11,9,13   
al,9,8,7,10
csys,1  
al,7,4,6,5  
csys,0  
afillt,3,4,0.2  
adrag,3,,,,,,17,14,31,19,33,4   
csys,1  
k,31,0.185,90   
k,32,0.185,147.46   
l,31,32
csys,0  
l,25,31
l,1,3   
l,3,32  
a,1,5,11,17,19,21,23,25,31,32,3,
wpoffs,-0.692,0,-0.079
wprota,,,90
cylind,,0.085,,0.056,90,180
vdele,1
adele,14,15
adele,17,18
ldele,44,45
ldele,48,49
ldele,52
ldiv,47,,,3
l,4,30
l,6,33
l,5,34
l,1,31
askin,47,2
askin,44,3
askin,45,1
ldele,48,49
ldele,52,53
aglue,1,2,3,4,6,9,7,10,11,8
/pnum,line,1
lplot
lsel,s,,,50,51
lesize,all,,,5
lsel,s,,,44,45
lsel,a,,,47
lesize,all,,,4
lsel,s,,,46
lesize,all,,,12
amesh,16
lsel,s,,,1,3,1
lsel,a,,,54,57,1
lesize,all,,,4
asel,s,,,14,15
asel,a,,,17
amesh,all
lsel,s,,,15,48,33
lesize,all,,,4
lsel,s,,,17,18,1
lsel,a,,,9
lesize,all,,,2
asel,s,,,1,18,17
amesh,all
lsel,s,,,13,14,1
lsel,a,,,16
lesize,all,,,8
lsel,s,,,12,49,37
lesize,all,,,4
asel,s,,,2,19,17
amesh,all
lsel,s,,,31,32
lsel,a,,,23
lesize,all,,,3
lsel,s,,,30,52,22
lesize,all,,,4
asel,s,,,6,20,14
amesh,all
lsel,s,,,20,26,6
lesize,all,,,8
lsel,s,,,59,61,1
lsel,a,,,35,58,23
lesize,all,,,4
asel,s,,,22,23
amesh,all
lsel,s,,,7,28,21
lsel,a,,,53
lesize,all,,,4
lsel,s,,,33,34
lsel,a,,,29
lesize,all,,,20
asel,s,,,8,21,13
amesh,all
lsel,s,,,6,37,31
lesize,all,,,4
lsel,s,,,4,5
lsel,a,,,38,39
lesize,all,,,8
asel,s,,,5,12,7
amesh,all
lsel,s,,,1,41,40
lsel,a,,,57
lesize,all,,,4
lsel,s,,,40,43,3
lesize,all,,,10
lsel,s,,,42
lesize,all,,,15
asel,s,,,1,13,12
amesh,all
allsel
asel,all
arsym,y,all
wprota,,,-90
csys,4
allsel
asel,all
arsym,z,all
csys,0
allsel
arsym,x,all
allsel
numcmp,all
nummrg,all
/solu
allsel
antype,modal
modopt,lanb,6
asel,s,,,50,61,11
asel,a,,,16,27,11
nsla,,1
d,all,all
allsel
asel,s,,,84,95,11
asel,a,,,118,129,11
nsla,,1
d,all,all
allsel
solve
finish
/post1
*get,f1,mode,1,freq
*get,f2,mode,2,freq
*get,f3,mode,3,freq
*get,f4,mode,4,freq
*get,f5,mode,5,freq
*get,f6,mode,6,freq
set,list
set,1,1
pldisp
set,1,2
pldisp
set,1,3
pldisp
set,1,4
pldisp
set,1,5
pldisp
set,1,6
pldisp
/replot
finish

lmj741

我想请问一下:单个零件的振动分析有什么现实意义吗?就我个人理解,模态分析要考察的系统的振动状况,如果装上整车,单个的零部件分析不知道有什么意义?
请问系统(整车)的振动的分析如何才能实现,如果可能,分析一下思路,谢谢

320

基于楼上的问题我真的不知道该怎么回答才好，看了你的问题着实让我吓了一跳。因为考虑到试验条件的限制吧，我做这个分析的时候仅仅考虑到这个零件，没有考虑到整车，更加没有考虑到装上零件后，零件在汽车的四个工况下的振动情况。应该说没有什么现实意义吧，我做这个东西的时候也是抱着练手的态度做的，让你见笑了。
本人水平很有限。希望能得到大家的批评和帮助。
谢谢楼上的回帖，

lmj741

320
其实不是玩笑,我也是请教.模态分析我以前有做很多(项目需要),但只是算频率,看振型和振幅的相对分布.准确性还不错
  但对于我们用CAE的一个目的,我想大家也都是去模拟现实,如果无法做到这一点,CAE也就失去了它的意义.当然,做一些例子来熟悉一下软件,我也经历过这个阶段,但真正的现实在ANSYS中如何实现吻合,欢迎大家来讨论!
Email:lmj741@163.com
shenzhen

xiaoyu19802008

我顶我顶我顶320！好！

femsun

楼上的朋友
如果对于整个系统的，那么连接件之间有的时候不能作为纯刚性连接处理的，这个问题怎么处理呢？是一一测量吗？