这个位移荷载曲线怎么加，我都快崩溃了

hitzhangke

谢谢各位热心大侠！
*HEADING
SECTION OF BRACE IS BOX
*PREPRINT,ECHO=YES,HISTORY=YES,MODEL=YES,CONTACT=YES
*NODE,NSET=N_BOUNTRAY
1,0,0,0
2,0.004,2,0
3,0,4,0
4,0.002,1
5,0.002,3
*ELEMENT,TYPE=B32,ELSET=E_BRACE
1,1,2,4
2,2,3,5
*BEAM SECTION, ELSET=E_BRACE, MATERIAL=STEEL, SECTION=BOX
0.08, 0.08, 0.004, 0.004, 0.004, 0.004
0.,0.,-1.
*NSET,NSET=N_DOWN
1
*NSET,NSET=N_UP
3
*MATERIAL, NAME=STEEL
*DENSITY
7800.,
*ELASTIC
2.06E+11, 0.28
*PLASTIC, HARDENING=KINEMATIC
**3.17E+08, 0.00156158
3.17e+08,
4E+08,  0.0424483
*BOUNDARY
N_DOWN,1,6
N_UP,1
N_UP,3,6
*AMPLITUDE, NAME=ENDDISP,
0,0.25,1,0,2,0.5,3,0,
4,0.75,5,0,6,1,7,0,
8,2,9,0,10,2,11,0,
12,2
*RESTART,WRITE,FREQ=1,OVERLAY
*STEP,name=brace,NLGEOM=YES
*STATIC, STABILIZE, FACTOR=0.002
1., 1., 1E-05, 1.
*BOUNDARY,TYPE=DISPLACEMENT,AMPLITUDE=ENDDISP,OP=NEW
N_UP,2,2,7.277683000E-03
*CONTROLS, ANALYSIS=DISCONTINUOUS
*END STEP