不考虑陀螺力矩的话beam3单元就可以了,轮盘可以作为集中质量选用mass21单元,如果是刚性支撑只要在相应节点约束ux方向就可以了(uy方向也可以约束)。如果是弹性支撑,那你就要加一个combine单元作为弹性支撑,不过现在从各种结果来看,弹性支撑基本是算不准的。
如果非要采用实体建模,那么用solid单元吧。但是实体建模的ansys结果好像没听说有算的准的:lol
如果要考虑陀螺力矩,那么首先要有ansys10.0以后的版本,然后轴单元选用beam4单元就可以了。轮盘作集中质量选用mass21单元。
不考虑陀螺力矩的命令流本版好像就有,你搜一搜。我这贴一个刚性支撑考虑陀螺力矩的命令流,你参考参考:lol
/clear
/units,si
/prep7
/TITLE, NATURAL FREQUENCY OF shaft
et,1,beam4
et,2,mass21
*SET,pi,3.1415926535
*SET,D1,0.09
*SET,D2,0.11
*SET,D3,0.15
*SET,D4,0.16
*SET,D5,0.3
*SET,R1,0
*SET,R2,0.03
*SET,R3,0.06
*SET,R4,0.06
*SET,R5,0.06
*do,i,1,5,1
mp,dens,i,7850
mp,ex,i,2.12e11
*enddo
n,1,0
n,2,0.22
n,3,0.46
n,4,0.54
n,5,0.6
r,1,pi*(D1**2-R1**2)/4,pi*(D1**4-R1**4)/64,pi*(D1**4-R1**4)/64,D1,D1,,
RMORE,,pi*(D1**4-R1**4)/32,,,,,
r,2,pi*(D2**2-R2**2)/4,pi*(D2**4-R2**4)/64,pi*(D2**4-R2**4)/64,D2,D2,,
RMORE,,pi*(D2**4-R2**4)/32,,,,,
r,3,pi*(D3**2-R3**2)/4,pi*(D3**4-R3**4)/64,pi*(D3**4-R3**4)/64,D3,D3,,
RMORE,,pi*(D3**4-R3**4)/32,,,,,
r,4,pi*(D4**2-R4**2)/4,pi*(D4**4-R4**4)/64,pi*(D4**4-R4**4)/64,D4,D4,,
RMORE,,pi*(D4**4-R4**4)/32,,,,,
r,5,pi*(D5**2-R5**2)/4,pi*(D5**4-R5**4)/64,pi*(D5**4-R5**4)/64,D5,D5,,
RMORE,,pi*(D5**4-R5**4)/32,,,,,
r,6,122.7675,122.7675,122.7675,2*5.4654,5.4654,5.4654
r,7,122.0395,122.0395,122.0395,2*5.4672,5.4672,5.4672
r,8,50.85046,50.85046,50.85046,2*1.8662,1.8662,1.8662
type,1
*do,j,1,5,1
mat,j
real,j
e,j,j+1
*enddo
type,2
real,6
e,2
real,7
e,3
real,8
e,4
finish
/solu
antype,modal
d,1,ux,0
d,1,uy,0
d,5,ux,0
d,5,uy,0
modopt,subsp,20
solve
finish
ps:我觉得我的陀螺力矩好像用的不太对,还望高手们指点指点:loveliness: :loveliness: |