*HEADING

CAP PLASTICITY, SHEAR TEST, C3D8, BIGK=0.8, TWO PRIMARY ELEMENTS,
LOAD CONTROL, TWO OVERLOAD SOFT ELEMENTS
*NODE, NSET=BOT
1,0.,0.,0.
2,1.,0.,0.
3,1.,1.,0.
4,0.,1.,0.
11,0.,0.,0.
12,1.,0.,0.
13,1.,1.,0.
14,0.,1.,0.
*NODE, NSET=TOP
5,0.,0.,1.
6,1.,0.,1.
7,1.,1.,1.
8,0.,1.,1.
15,0.,0.,1.
16,1.,0.,1.
17,1.,1.,1.
18,0.,1.,1.
*NSET, NSET=ALLN
BOT, TOP
*NSET, NSET=BACK
1,4,5,8
11,14,15,18
*NSET, NSET=FRONT
2,3,6,7
*NSET, NSET=LHS
1,2,5,6
11,12,15,16
*NSET, NSET=RHS
3,4,7,8
*ELEMENT, TYPE=C3D8, ELSET=MAIN
1,1,2,3,4,5,6,7,8
11,11,12,13,14,15,16,17,18
*SOLID SECTION, ELSET=MAIN, MATERIAL=CAPL
*MATERIAL,NAME=CAPL
** The material data is chosen to give G = 5000.0, BULK = 10000.0,
** first yield in pure shear        at P =   0.0,  S12 = 100.0, 
** first yield in hydro compression at P = 270.0,  S12 =   0.0,
** first yield in hydro tension     at P =-300.0,  S12 =   0.0,
** first yield (P = PA)             at P = 120.0,  S12 = 125.0
*ELASTIC
12857.1429, 0.28571429
*CAP PLASTICITY
** COHESN, BETA,    BIGR,   EVOLPI,   ALPHA,   BIGK
173.20508, 30.0, 0.61858957, 0.027, 0.69258232, 0.8
*CAP HARDENING
** PB, EVOLP
 213.0, 0.00
 222.0, 0.01
 242.0, 0.02
 282.0, 0.03
 362.0, 0.04
 522.0, 0.05
 842.0, 0.06
1482.0, 0.07
2762.0, 0.08
**
*ELEMENT, TYPE=C3D8, ELSET=SOFT
101,1,2,3,4,5,6,7,8     
111,11,12,13,14,15,16,17,18     
*SOLID SECTION, ELSET=SOFT, MATERIAL=ELAS
*MATERIAL,NAME=ELAS
*ELASTIC
** G = 50.0, BULK = 100.0,
128.571429, 0.28571429
**
*STEP, INC=2, UNSYMM=YES
Step 1: Load to incipient yield
*STATIC, DIRECT
1., 2.
*BOUNDARY
BACK,1
LHS, 2
BOT, 3
*DLOAD            
 1, P4, -58.31237
 1, P5, -58.31237
 1, P2, 116.62474
11, P4,  46.649902
11, P5,  46.649902
11, P2, -93.299804
*EL PRINT, F=999
S, 
SINV, 
E, 
PE, 
PEQC, 
*EL PRINT, POS=NODES, F=999
PEQC4, 
*NODE PRINT, F=999
U, 
RF   , 
*OUTPUT,FIELD,FREQ=999
*ELEMENT OUTPUT
S,SINV,E,PE,PEQC
*OUTPUT,FIELD,FREQ=999
*NODE OUTPUT
U,RF
*END STEP
**
*STEP, INC=2, UNSYMM=YES
Step 2: Load beyond yield
*STATIC, DIRECT
1., 2.                                             
*DLOAD
 1, P4, -58.5
 1, P5, -58.5
 1, P2, 117.0
11, P4,  47.0
11, P5,  47.0
11, P2, -94.0
*END STEP