*HEADING SHEET METAL FORMING WITH ANNEALING WITH AN ANALYTICAL RIGID SURFACE DIE3 SLIDES DOWN FROM ABOVE TO AVOID INITIAL OVERCLOSURE *NODE,NSET=BLANK 1,0.,0.0005 41,.150,0.0005 *NGEN,NSET=BLANK 1,41,1 *ELEMENT,TYPE=SAX1,ELSET=BLANK 1, 1,2 *ELGEN,ELSET=BLANK 1, 40,1,1 *SHELL SECTION,ELSET=BLANK,MATERIAL=STEEL, SECTION INTEGR=GAUSS .001,5 *MATERIAL,NAME=STEEL *DENSITY 7800., *ELASTIC 2.1E11,0.3 *PLASTIC 0.91294E+08, 0.00000E+00 0.10129E+09, 0.21052E-03 0.11129E+09, 0.52686E-03 0.12129E+09, 0.97685E-03 0.13129E+09, 0.15923E-02 0.14129E+09, 0.24090E-02 0.15129E+09, 0.34674E-02 0.16129E+09, 0.48120E-02 0.17129E+09, 0.64921E-02 0.18129E+09, 0.85618E-02 0.19129E+09, 0.11080E-01 0.20129E+09, 0.14110E-01 0.21129E+09, 0.17723E-01 0.22129E+09, 0.21991E-01 0.23129E+09, 0.26994E-01 0.24129E+09, 0.32819E-01 0.25129E+09, 0.39556E-01 0.26129E+09, 0.47301E-01 0.27129E+09, 0.56159E-01 0.28129E+09, 0.66236E-01 0.29129E+09, 0.77648E-01 0.30129E+09, 0.90516E-01 0.31129E+09, 0.10497E+00 0.32129E+09, 0.12114E+00 0.33129E+09, 0.13916E+00 0.34129E+09, 0.15919E+00 0.35129E+09, 0.18138E+00 0.36129E+09, 0.20588E+00 0.37129E+09, 0.23287E+00 0.38129E+09, 0.26252E+00 0.39129E+09, 0.29502E+00 0.40129E+09, 0.33054E+00 0.41129E+09, 0.36929E+00 0.42129E+09, 0.41147E+00 0.43129E+09, 0.45729E+00 0.44129E+09, 0.50696E+00 0.45129E+09, 0.56073E+00 0.46129E+09, 0.61881E+00 0.47129E+09, 0.68145E+00 0.48129E+09, 0.74890E+00 0.49129E+09, 0.82142E+00 0.50129E+09, 0.89928E+00 0.51129E+09, 0.98274E+00 0.52129E+09, 0.10721E+01 ** *NODE 199991, 0., -0.05 299991, .100, -.060 399991,.0,0.0044 399992,.0,0.0044 ** *NSET,NSET=OUTN,GENERATE 1,41,1 *NSET,NSET=OUTN 199991,299991,399991 ** *BOUNDARY 1,XSYMM 199991,1,6 299991,1,6 399991,1,2 399991,6,6 399992,1,2 399992,6,6 *AMPLITUDE,NAME=R1,TIME=STEP TIME 0.,0., .8E-3,1.5E6, 1.7E-3,1.5E6, 3.E-3,1.E7, 3.5E-3,1.E7 *AMPLITUDE,NAME=R2,TIME=STEP TIME 0.,1.E7, 1.E-3,0. *AMPLITUDE,NAME=R3A,TIME=STEP TIME,DEFINITION=SMOOTH STEP 0.,0., 1.E-3, 1.0 *AMPLITUDE,NAME=R4,TIME=STEP TIME 0.,0., 1.E-3,.6E7 *AMPLITUDE,NAME=R5,TIME=STEP TIME 0.,.6E7, 1.E-3,0. *RESTART,WRITE,NUM=1 ** ** First downward pressure loading ** *SURFACE,TYPE=ELEMENT,NAME=TOP BLANK,SPOS *SURFACE,TYPE=ELEMENT,NAME=TOP1 BLANK,SPOS *SURFACE, NAME=DIE1, TYPE=SEGMENTS START, 0.,-0.05 LINE, .090,-0.05 CIRCL, .100,-.040, .090,-.040 *SURFACE, NAME=DIE2, TYPE=SEGMENTS START, .100,-.060 LINE, .100,-.010 CIRCL, .110, 0., .110,-.010 LINE, .160, 0. *SURFACE,TYPE=ELEMENT,NAME=BOTTOM BLANK,SNEG *SURFACE, NAME=DIE3, TYPE=SEGMENTS START, .0988, .0405 LINE, .0988,0.001 CIRCL, .0888,-.009, .0888,0.001 LINE, .050,-.009 CIRCL, .0, 0.0044, .0,-0.0956 *SURFACE, NAME=DIE4, TYPE=SEGMENTS START, .099, .0005 LINE, .099,-.039 CIRCL, .089,-.049, .089,-.039 LINE, .050,-.049 CIRCL, .0, -.0356,.0,-.1356 *RIGID BODY, REF NODE=399992, ANALYTICAL SURFACE =DIE4 *RIGID BODY, REF NODE=399991, ANALYTICAL SURFACE =DIE3 *RIGID BODY, REF NODE=199991, ANALYTICAL SURFACE =DIE1 *RIGID BODY, REF NODE=299991, ANALYTICAL SURFACE =DIE2 *ELSET, ELSET=QA_TEST, GEN 5, 40, 5 *ELSET, ELSET=QA_TEST 1, *NSET, NSET=QA_TEST, GEN 1, 41, 5 *STEP *DYNAMIC,EXPLICIT ,3.5E-3 *DLOAD,AMP=R1 BLANK,P,-1.0 *SURFACE INTERACTION,NAME=FRICT *FRICTION 0.1, *CONTACT PAIR,INTERACTION=FRICT DIE2,BOTTOM DIE1,BOTTOM ** ************** *FILE OUTPUT,NUM=1, TIMEMARKS=YES *EL FILE, ELSET=QA_TEST STH, PEEQ *NODE FILE, NSET=QA_TEST U, *OUTPUT,FIELD, TIME MARKS=YES, NUMBER INTERVAL=1 *ELEMENT OUTPUT, ELSET=QA_TEST STH, PEEQ *NODE OUTPUT, NSET=QA_TEST U, *OUTPUT, HISTORY *ENERGY OUTPUT, VAR=PRESELECT **************** ***OUTPUT,HISTORY,TIME INTERVAL=3.5E-6 *NSET,NSET=NOUT 1, ***NODE OUTPUT,NSET=NOUT **U,V *ELSET,ELSET=EOUT 24,25,26 ***ELEMENT OUTPUT,ELSET=EOUT **STH, **PEEQ,MISES,S,LE,PE ***ENERGY OUTPUT **ALLKE,ALLSE,ALLWK,ALLPD,ALLAE,ALLCD,ALLFD,ALLIE,ALLVD,ETOTAL,DT *END STEP ** ** First springback ** *STEP *DYNAMIC,EXPLICIT ,1.E-3 *DLOAD,AMP=R2,OP=NEW BLANK,P,-1.0 *END STEP ******************************* ** ** anneal ** *STEP *ANNEAL *END STEP ** ** gradually slide die3 into position ** *STEP *DYNAMIC,EXPLICIT ,1.0E-3 *BOUNDARY, AMP=R3A 399991,2,2,-0.04 ***DLOAD,OP=NEW **BLANK, VP, 100.0 *CONTACT PAIR,INTERACTION=FRICT DIE3,TOP *CONTACT PAIR,OP=DELETE DIE1,BOTTOM *END STEP ** ** Second upward pressure loading ** *STEP *DYNAMIC,EXPLICIT ,1.0E-3 *ELSET,ELSET=LOAD,GEN 1,26,1 *DLOAD,AMP=R4,OP=NEW LOAD,P,1.0 *END STEP ** ** Second springback ** *STEP *DYNAMIC,EXPLICIT ,1.E-3 *DLOAD,AMP=R5,OP=NEW LOAD,P,1.0 *END STEP