ansys弹簧振动系统模态分析

首先可以肯定是可行的！弹簧一般用COMBIN14等单元就可以了，但是建模的话不是你实际中是怎样就要建立成怎样，需要一些等效建模，如果你刚接触这个软件，不是打击楼主，即便你学习了两个月了，也只能模糊地做着，很多东西搞不清楚，你看看这方面的例子吧，我给你贴一个例子，不好意思，是命令刘的
/PREP7
/TITLE, VM90, HARMonIC RESPonSE OF A TWO-MASS-SPRING SYSTEM
C*** VIBRATION THEORY AND APPLICATIONS, THOMSON, 2ND PRINTING, PAGE 178,EX 6.6-1
ANTYPE,HARMIC ! HARMonIC RESPonSE ANALYSIS
HROPT,REDUC ! REDUCED HARMonIC RESPONSE
HROUT,OFF ! PRINT RESULTS AS AMPLITUDES AND PHASE ANGLES
ET,1,COMBIN14,,,2
ET,2,MASS21,,,4
R,1,200 ! SPRING ConSTANT = 200
R,2,.5 ! MASS = 0.5
N,1
N,4,1
FILL
E,1,2
TYPE,2
REAL,2
E,2 ! MASS ELEMENT
TYPE,1
REAL,1
E,2,3 ! SPRING ELEMENT
TYPE,2
REAL,2
E,3 ! MASS ELEMENT
TYPE,1
REAL,1
E,3,4 ! SPRING ELEMENT
M,2,UX,3
OUTPR,BASIC,1
NSUBST,30 ! 30 INTERVALS WITHIN FREQ. RANGE
HARFRQ,,7.5 ! FREQUENCY RANGE FROM 0 TO 7.5 HZ
KBC,1 ! STEP BOUNDARY CONDITION
D,1,UY,,,4
D,1,UX,,,4,3
F,2,FX,200
FINISH
/SOLU
SOLVE
FINISH
/POST26
FILE,,rfrq
NSOL,2,2,U,X,2UX ! STORE UX DISPLACEMENTS
NSOL,3,3,U,X,3UX
PRVAR,2,3
*GET,X1,VARI,2,RTIME,1.5
*GET,X2,VARI,3,RTIME,1.5
*GET,X3,VARI,2,RTIME,4
*GET,X4,VARI,3,RTIME,4
*GET,X5,VARI,2,RTIME,6.5
*GET,X6,VARI,3,RTIME,6.5
/GRID,1 ! TURN GRID 振动分析ON
/AXLAB,Y,DISP ! Y-AXIS LABEL DISP
PLVAR,2,3