*HEADING
 BASIC VERIFICATION - QUADRATIC AND C BIQUAD MPC TYPES
 ELEMENT: C3D20, TEST TYPE:5 ,TEST NUMBER:6  --
*NODE
*NGEN,NSET=LEFT
*NGEN
*NSET,NSET=BOTTOM
*ELEMENT,TYPE=C3D20,ELSET=ELALL
*SOLID SECTION,ELSET=ELALL,MATERIAL=MAT
*MATERIAL,NAME=MAT
*ELASTIC
 3E6,.3
*NSET,NSET=BACK
*BOUNDARY
BACK,3
LEFT,1
BOTTOM,2
*MPC
QUADRATIC,40,3,8,13
QUADRATIC,44,3,8,13
QUADRATIC,45,22,27,32
QUADRATIC,41,22,27,32
C BIQUAD,50,3,13,22,32,8,17,27,37
*STEP,PERTURBATION
*STATIC
*EL FILE,FREQ=99
 LOADS,
 S,
*NODE FILE,FREQ=99
 U,
 COORD,
*EL PRINT,FREQ=99
 LOADS,
 S,
*NODE PRINT,FREQ=99
 U,
 COORD,
*DLOAD
2,P2,10000.
3,P2,10000.
*END STEP
*STEP,NLGEOM
*STATIC
.5,1.
*DLOAD
2,P2,10000.
3,P2,10000.
*EL FILE,FREQ=99
 LOADS,
 S,
*NODE FILE,FREQ=99
 U,
 COORD,
*EL PRINT,FREQ=99
 LOADS,
 S,
*NODE PRINT,FREQ=99
 U,
 COORD,
*END STEP