*HEADING
Two Layer Elastic Shell 
*PREPRINT, ECHO=YES, MODEL=YES
*RESTART, WRITE
*PARAMETER
E = 20.e05
T = 4.0
PHI=0.0
K11=100.0
*DESIGN PARAMETER
K11,PHI
*NODE
1,  0., 0.0, 0.0
2, 20., 0.0, 0.0
3, 20., 5.0, 0.0
4,  0., 5.0, 0.0
5, 30., 0.0, 0.0
6, 30., 5.0, 0.0
*NSET, NSET=FIXED
1,4
*NSET,NSET=FREE
5,6
*ELEMENT,TYPE=S4R
1, 1, 2, 3, 4
2, 2, 5, 6, 3
*ELSET,ELSET=S1
1
*ELSET, ELSET=S2
2
*SHELL SECTION, ELSET=S1, MATERIAL=MAT1
<T>,
*TRANSVERSE SHEAR STIFFNESS
<K11>,200.0,100.0
*SHELL SECTION, ELSET=S2, COMPOSITE
<T>,3,MAT1,OR1
*MATERIAL, NAME=MAT1
*ELASTIC,TYPE=ENGINEERING CONSTANTS
<E>, 1000., 1000., 0.0, 0.0, 0.0, 1e05, 500.
500.,
*DENSITY
0.001,
*ORIENTATION, NAME=OR1
1.0, 1.0, 0.0, 1.0, 2.0, 0.0
3,<PHI>
*BOUNDARY
FIXED, ENCASTRE
*STEP,DSA
*STATIC
0.05, 0.1
*CLOAD
FREE, 3, -200.0
*OUTPUT,FIELD
*NODE OUTPUT
U,
*ELEMENT OUTPUT
S,
E,
*DESIGN RESPONSE
*NODE RESPONSE
U,
*ELEMENT RESPONSE
S,
E,
MASS,
*END STEP
*Step
1.0,1.0
*Static
*CLOAD
FREE, 3, -200.0
*End Step
*STEP,DSA
*FREQUENCY,EIGENSOLVER=SUBSPACE
10,
*DESIGN RESPONSE,MODELIST
1,2,3,10
*OUTPUT,FIELD
*NODE OUTPUT
U,
*END STEP