Learning Forum

[Md_Salem]

My structure is a plate modelled with the shell element, while the attached piezo patches are simulated with Solid226. So, if I just select the nodes at location z=0 it will take both the lower surface of the piezo patches in addition to all shell elements (plate) nodes

Actually I used the next code to assign 100 volt load to the top surface and do harmonic analysis

ESEL,S,ENAME,226
NSEL,R,LOC,Z,0
D,ALL,VOLT,0

ALLSEL

NSEL,S,LOC,Z,0.001

CM,top_elec,NODE
CP,1,VOLT,ALL

ALLSEL

D,top_elec,VOLT,100

*DIM,Fd
*VREAD,Fd,MODE_F,TXT,C:\Users\MD\Desktop
(F18.10)
*SET,x1,Fd(1,1,1)-0.02
*SET,x2,Fd(1,1,1)+0.02
HROPT,FULL
HROUT,ON
LUMPM,0
EQSLV, ,0,
PSTRES,0
HARFRQ,x1,x2
NSUBST,55
KBC,1

it worked properly compared with GUI results

Regards