*HEADING
  SPRING-MASS SYSTEM WITH COMPOSITE DAMPING
  MULTIPLE LOAD CASES TEST FOR B31,MASS,SPRING1,ROTARY 1 ELEMENTS
*NODE
*ELEMENT,TYPE=B31,ELSET=BEAM
*ELEMENT,TYPE=SPRING2,ELSET=SPRINGX
*ELEMENT,TYPE=SPRING2,ELSET=SPRINGY
*ELEMENT,TYPE=SPRING2,ELSET=SPRINGZ
*ELEMENT,TYPE=MASS,ELSET=MASS
*ELEMENT,ELSET=ROTI,TYPE=ROTARYI
*MASS,ELSET=MASS,COMPOSITE=0.01
0.1,
*SPRING,ELSET=SPRINGX
1,1
160.,
*SPRING,ELSET=SPRINGY
2,2
160.,
*SPRING,ELSET=SPRINGZ
3,3
160.,
*ROTARY INERTIA,ELSET=ROTI,COMPOSITE=0.01
1.E-2,2.E-2,1.E-2
*BEAM SECTION,SECTION=RECT,ELSET=BEAM,MATERIAL=BEAM
0.1,0.1
*MATERIAL,NAME=BEAM
*ELASTIC
1.E6,0.3
*DENSITY
1.E-6,
*BOUNDARY
2,1,6
*STEP
*FREQUENCY, eigensolver=lanczos
6, ,
*EL PRINT
E,S
*NODE PRINT
U,
*OUTPUT,FIELD
*ELEMENT OUTPUT,ELSET=BEAM
SF,SE,ELEN
*ELEMENT OUTPUT
S,E
*NODE OUTPUT
U,
*END STEP
***************************
***MULTIPLE LOAD CASE TEST
****************************
*STEP,PERTURBATION
*STATIC
*LOAD CASE,name=uniaxial-compression
*BOUNDARY
1,1,1,1
*END LOAD CASE
*LOAD CASE,name=uniaxial-tension
*CLOAD
1,1,1000
*END LOAD CASE
*OUTPUT,FIELD
*ELEMENT OUTPUT,ELSET=BEAM
SF,SE,ELEN
*ELEMENT OUTPUT
S,E
*NODE OUTPUT
U,
*END STEP