*HEADING
: NAFEMS TEST FV41, [CAXA81]
Stress displacement elements
*RESTART,WRITE
*NODE
*NGEN,NSET=IN
*NGEN,NSET=MID
*NGEN,NSET=OUT
*NSET,NSET=Npl_1
IN,MID,OUT
*NSET,NSET=Npl_2,GEN
*NSET,NSET=ALLN
Npl_1,Npl_2
**
*ELEMENT,TYPE=CAXA81
*ELGEN,ELSET=ALLE
*SOLID SECTION,ELSET=ALLE,MATERIAL=MAT
*MATERIAL,NAME=MAT
*ELASTIC
200.E9,0.3
*DENSITY
8000.,
*EQUATION
Npl_2,1,1.0,Npl_1,1,-1.0
Npl_2,2,1.0,Npl_1,2,-1.0
*STEP,PERT
*FREQUENCY, eigensolver=lanczos, SIM=NO
6, , ,-1.
*MODAL FILE
*NODE PRINT,F=0
*EL PRINT,F=0
*ENDSTEP