Simulation of beam vibration

Beijing Institute of Technology | Ming-Jian Li

The following APDL code is a companion code for the course on Artificial Intelligence and Simulation Science. Its function is to solve the vibration process of a beam with one end fixed and the other end subjected to force using the finite element method. The following code needs to be executed in ANSYS, APDL is the parameteric language of ANSYS.

​x
1
fini
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/clear
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/FILNAME,noodle,1 
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/PREP7  
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/units,SI
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ET,1,solid185
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mp,EX,1,40e3
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mp,PRXY,1,0.3 
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mp,DENS,1,1200
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a=0.01
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b=0.01
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c=0.7
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block,0,c,-a/2,a/2,-b/2,b/2
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LSEL,all
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LESIZE,ALL,a
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alls
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TYPE,1  
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MAT,1
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vmesh,all
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alls
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/sol
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nsel,s,loc,x,0
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d,all,ux,0
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d,all,uy,0
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d,all,uz,0
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alls
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deltat=0.1
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n=100
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force=1e-4
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freq=1
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/SOL
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antype,trans
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TRNOPT,FULL
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*do,i,1,n,1
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     TIME,i*deltat
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     nsel,s,loc,x,c
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     f,all,fy,force*cos(2*3.14*freq*i*deltat)
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     alls
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     solve  
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*enddo
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save

The result is as follows.