请不要忽略每个简单的官方案例的作用!
ANSYS 官方案例是入门、初级、精通各个阶段学习者最有价值的参考资料
案例说明
如下图,为悬臂梁与远离悬臂末端质量模型,悬臂梁远端分布质量A和质量B,采用圆截面Beam188单元,远端连接质量A和质量B的梁单元赋予大的弹性模型近似为刚性体,进行模态分析。
简化模型
打开梁单元形状显示的简化模型
模态分析结果
一阶 | 二阶 |
三阶 | 四阶 |
五阶 | 六阶 |
完整命令流
FINISH
/CLEAR
/TITLE,VMP09-T4-188, CANTILEVER WITH OFF-CENTRE POINT MASSES
/PREP7
ET,1,188
SECN,1
SECT,1,BEAM,CSOLID
SECD,0.25
N,1,0.0
N,2,1.0
N,3,2.0
N,4,3.0
N,5,4.0
N,6,5.0
N,7,6.0
N,8,7.0
N,9,8.0
N,10,9.0
N,11,10.0
N,101,5.0,5.0
N,201,10.0,0.0,5.0
E,1,2,101
E,2,3,101
E,3,4,101
E,4,5,101
E,5,6,101
E,6,7,101
E,7,8,101
E,8,9,101
E,9,10,101
E,10,11,101
MP,EX,1,200E9
MP,NUXY,1,0.3
MP,DENS,1,8000.0
D,1,ALL
ET,2,188
TYPE,2
MP,EX,2,1.0E16
MP,NUXY,2,0.0
MP,DENS,2,0.0
MAT,2
REAL,2
SECN,2
SECT,2,BEAM,CSOLID
SECD,1.0
N,21,10.0,2.0
N,31,10.0,-2.0
E,11,21,201
E,11,31,201
ET,3,MASS21
TYPE,3
REAL,3
SECN,3
R,3,10000.0,10000.0,10000.0
E,21
ET,4,MASS21
TYPE,4
REAL,4
SECN,4
R,4,1000.0,1000.0,1000.0
E,31
/SOLU
ANTYPE,MODAL
MODOPT,SUBSP,6
MXPAND,6
LUMPM,ON
SOLVE
FINISH
/POST1 !后处理输出系统固有频率
*DIM,FREQ,ARRAY,6
*GET,FREQ(1,1),MODE,1,FREQ
*GET,FREQ(2,1),MODE,2,FREQ
*GET,FREQ(3,1),MODE,3,FREQ
*GET,FREQ(4,1),MODE,4,FREQ
*GET,FREQ(5,1),MODE,5,FREQ
*GET,FREQ(6,1),MODE,6,FREQ
R1=FREQ(1,1)/1.723
R2=FREQ(2,1)/1.727
R3=FREQ(3,1)/7.413
R4=FREQ(4,1)/9.971
R5=FREQ(5,1)/18.155
R6=FREQ(6,1)/26.957