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SUBROUTINE OPT2A (IP,EL,IEL,PR,IPR,RR)
C
LOGICAL FIRST,UNSAFE
INTEGER COUNT,ETYP,IEL(1),IP(2,1),IPR(1),IZ(10),NAME(2),
1 OES1,OUTTAP,PEST,PSTRES,PTELT,ZCOR,OLDTYP,EID(20),
2 PLUS(5),IY(1)
REAL EL(1),PR(1),RR(1),Y(1),PARM(8)
CHARACTER UFM*23,UWM*25,UIM*29
COMMON /XMSSG / UFM,UWM,UIM
COMMON /BLANK / SKP(2),COUNT,SKQ(2),KORE,SKR(2),NWDSE,NWDSP,SKS,
1 OES1,SKT(3),NELW,NPRW,SKU,NTOTL,CONV
COMMON /OPTPW2/ ZCOR,Z(16)
COMMON /ZZZZZZ/ CORE(1)
COMMON /NAMES / NRD,NOEOR,NWRT,NEXT
COMMON /SYSTEM/ SYSBUF,OUTTAP
C EQUIVALENT ARE (EL,IEL), (PR,IPR)
EQUIVALENCE (Z(1),IZ(1)), (CORE(1),PARM(1),MAX),
1 (IY(1),Y(1),PARM(8))
DATA NAME / 4H OPT,4H2A /
DATA PLUS / 4H , 4H+ , 4H++ , 4H+++ , 4H++++ /
C
NELR = 0
NE = 0
PTELT = 0
IDEL = 0
KEL = KORE
KCONV = 0
CONV = 1.0
ICP = NTOTL - 4
FIRST =.TRUE.
C
C READ HEADER, ODD RECORDS
C
GO TO 10
5 CALL FREAD (OES1,0,0,NEXT)
10 CALL READ (*630,*100,OES1,Z(1),10,NEXT,I)
ETYP = IZ(3)
NESW = IZ(10)
OLDTYP= PTELT
PTELT = IY(ETYP)
IF (PTELT .GT. 0) GO TO 15
C
C ELEMENT TYPE NOT TO OPTIMIZE
C
GO TO 5
15 IF (PTELT.GE.OLDTYP .OR. OLDTYP.EQ.0) GO TO 20
IF (KEL .NE. -1) KEL = KORE
IF (NE .EQ. 0) GO TO 16
CALL PAGE2 (1)
WRITE (OUTTAP,580) (EID(J),J=1,NE)
NE = 0
16 WRITE (OUTTAP,17)
17 FORMAT (/5X,15HNEXT SUBCASE...)
C
C SET POINTERS TO ELEMENT TYPE AND PROPERTIES IN CORE.
C L = LOCATION OF FIRST, M = MAX LOCATION
C
20 LEL = IP(1,PTELT)
MEL = IP(1,PTELT+1) - 1
IF (MEL .LE. LEL) GO TO 5
LOCE = LEL
LOCP1 = IP(2,PTELT) - 1
IF (NESW .GT. ZCOR) GO TO 70
C
C SEQUENTIALLY READ ONE ELEMENT FROM EVEN NUMBERED RECORDS.
C LOCE IS CURRENT ELEMENT TO COMPARE TO.
C
30 CALL READ (*90,*10,OES1,Z(1),NESW,NOEOR,I)
IDES = IZ(1)/10
50 IF (IDES .EQ. IEL(LOCE)) GO TO 110
C
C SCAN THE CORE FILE UNTIL ELEMENT ID .GT. IDES
C
IF (IDES .LT. IEL(LOCE)) GO TO 30
C
C CORE ELEMENT NOT TO BE OPTIMIZED
C
LOCE = LOCE + NWDSE
IF (LOCE .LT. MEL) GO TO 50
C
C END OF ELEMENT SEARCH FOR THIS TYPE (EOR NOT READ)
C
GO TO 5
C
C ELEMENT TYPE EXCEEDS CORE
C
70 IER = -8
IFLE = NESW - ZCOR
GO TO 105
C
C ILLEGAL EOF, EOR
C
90 IER = -2
GO TO 101
100 IER = -3
101 IFLE = OES1
C
105 CALL MESAGE (IER,IFLE,NAME)
C
C PROCES THIS ELEMENT
C
110 CONTINUE
NELR = NELR + 1
LOCP = IEL(LOCE+4) + LOCP1
PEST = IPR(LOCP+1)/100
MEST = IPR(LOCP+1) - PEST*100
RC = 1.0
X1A = 0.0
X2A = 0.0
E1 = 999.
UNSAFE = .FALSE.
C
GO TO (160,160,180,150,150,150,140,140,140,120,
1 130,140,140,140,170,150,140,120,140,140), PTELT
C
C ROD, TUBE
C
120 LIMIT = 1
PSTRES = 4
ASSIGN 121 TO IRET
GO TO 500
121 LIMIT = 2
PSTRES = 2
ASSIGN 540 TO IRET
GO TO 500
C
C SHEAR
C
130 LIMIT = 1
PSTRES = 2
ASSIGN 540 TO IRET
GO TO 500
C
C TRBSC, TRPLT, QDPLT, TRIA1, TRIA2, TRIA3, QUAD1, QUAD2, QUAD4
C
140 IF (MEST .EQ. 1) GO TO 144
LIMIT = 2
PSTRES = 7
ASSIGN 141 TO IRET
GO TO 500
141 PSTRES = 8
ASSIGN 142 TO IRET
GO TO 500
142 PSTRES = 15
ASSIGN 143 TO IRET
GO TO 500
143 PSTRES = 16
ASSIGN 144 TO IRET
X1A = AMAX1(ABS(Z( 7)),ABS(Z( 8)))
X2A = AMAX1(ABS(Z(15)),ABS(Z(16)))
X1A = AMAX1(X1A,X2A)
K = 0
IF (X1A.EQ.ABS(Z(8)) .OR. X1A.EQ.ABS(Z(15))) K = 1
X1A = Z( 7+K)
X2A = Z(16-K)
GO TO 500
144 IF (MEST .EQ. 2) GO TO 540
LIMIT = 1
PSTRES = 9
ASSIGN 145 TO IRET
GO TO 500
145 PSTRES = 17
ASSIGN 540 TO IRET
GO TO 500
C
C TRMEM, QDMEM, QDMEM1, QDMEM2
C
150 IF (MEST .EQ. 1) GO TO 152
LIMIT = 2
PSTRES = 6
ASSIGN 151 TO IRET
GO TO 500
151 PSTRES = 7
ASSIGN 152 TO IRET
GO TO 500
152 IF (MEST .EQ. 2) GO TO 30
LIMIT = 1
PSTRES = 8
ASSIGN 540 TO IRET
GO TO 500
C
C BAR, ELBOW
C
160 LIMIT = 2
PSTRES = 7
X2A = ABS(Z(7))
ASSIGN 161 TO IRET
GO TO 500
161 PSTRES = 8
X1A = ABS(Z(8))
ASSIGN 162 TO IRET
GO TO 500
162 PSTRES = 14
ASSIGN 163 TO IRET
GO TO 500
163 PSTRES = 15
ASSIGN 540 TO IRET
GO TO 500
C
C TRIM6
C
170 IF (IEL(LOCE) .EQ. IDEL) GO TO 172
IDEL = IEL(LOCE)
ICP = ICP + 4
IF (KEL.NE.-1 .AND. ICP.GE.KEL) CALL MESAGE (-8,0,NAME)
IY(ICP) = LOCP
IY(ICP+4) =-1
172 K = 0
M1 =-1
DO 175 I = 1,3
M1 = M1 + 7
II = 3 + LOCE
S1S = 0.0
S3S = 0.0
IF (MEST .NE. 2) S3S = ABS(Z(M1+2)/EL(II))
II = II - 2
IF (Z(M1) .LT. 0.0) II = II + 1
IF (MEST .NE. 1) S1S = ABS(Z(M1)/EL(II))
II = 1 + LOCE
IF (Z(M1+1) .LT. 0.0) II = II + 1
S2S = ABS(Z(M1+1)/EL(II))
S13 = AMAX1(S1S,S2S)
S13 = AMAX1(S13,S3S)
Y(ICP+I) = AMAX1(Y(ICP+I),S13)
PR(LOCP+4) = AMAX1(PR(LOCP+4),S13)
E1 = ABS(S13) - 1.0
IF (ABS(E1) .LE. PARM(2)) K = K + 1
175 CONTINUE
ASSIGN 540 TO IRET
IF (K-3) 550,520,520
C
C IS2D8
C
180 M1 = 1
S1S = 0.0
S2S = 0.0
S3S = 0.0
DO 185 M = 1,8
M1 = M1 + 5
II = 3 + LOCE
IF (MEST .NE. 2) S3S = AMAX1(S3S,ABS(Z(M1+2)/EL(II)))
II = II - 2
IF (Z(M1) .LT. 0.0) II = II + 1
IF (MEST .NE. 1) S1S = AMAX1(S1S,ABS(Z(M1)/EL(II)))
II = 1 + LOCE
IF (Z(M1+1) .LT. 0.0) II = II + 1
S2S = AMAX1(S2S,ABS(Z(M1+1)/EL(II)))
S13 = AMAX1(S1S,S2S)
S13 = AMAX1(S13,S3S)
185 CONTINUE
E1 = ABS(S13) - 1.0
PR(LOCP+4) = AMAX1(PR(LOCP+4),S13)
ASSIGN 540 TO IRET
GO TO 520
C
C FUNCTION E1 - RATIO STRESS MINUS LIMIT DIVIDED BY LIMIT,
C WITH RESET OF -ALPHA-
C LOCP = POINTER TO PID OF PROPERTY.
C LOCE = POINTER TO EID OF ELEMENT.
C LIMIT = 1=SHEAR, 2= COMPRESSION/TENSION.
C PSTRES = CORRESPONDING STRESS, POINTER TO Z ARRAY.
C
500 II = 3 + LOCE
IF (LIMIT .EQ. 1) GO TO 510
II = II - 2
IF (Z(PSTRES) .LT. 0.0) II = II + 1
510 IF (EL(II) .LE. 0.0) GO TO 530
C
C POSITIVE LIMIT
C
PR(LOCP+4) = AMAX1(PR(LOCP+4),ABS(Z(PSTRES)/EL(II)))
C
C I
C NEGATIVE E1, SAFE I POSITIVE E1, UNSAFE
C I
C --+------+------+------+------+------+------+------------------- E1
C UL 4P 3P 2P P 0 P (WHERE P=PARM(2),
C ++++ +++ ++ + I I UL=UNLOADED)
C OVER DESIGNED I REGION WHEREI UNDER DESIGNED
C REGION I AE1 .LE. P I REGION
C (UNSAFE=.FALSE.) I (UNSAFE=.TRUE.)
C
E1 = ABS(Z(PSTRES)/EL(II)) - 1.0
520 IF (E1 .GT. PARM(2)) UNSAFE = .TRUE.
IF (UNSAFE) KEL = -1
AE1 = AMIN1(AE1,ABS(E1))
530 GO TO IRET, (121,141,142,143,144,145,151,152,161,162,163,540)
C
540 X1 = ABS(X1A)
X2 = ABS(X2A)
IF (X1.EQ.0.0 .OR. X2.EQ.0.0) GO TO 550
X1A= AMIN1(X1A,X2A)
X1 = AMIN1(X1,X2)/AMAX1(X1,X2)
X1 = SIGN(X1,X1A)
IF (ABS(X1) .GT. 1.0E-8) RC = X1
C
C SAVE IN RR AN EMPIRICAL ALPHA MODIFIER FOR SPEEDY CONVERGENCE
C
550 IRR = (LOCP+NWDSP)/NWDSP
RR(IRR) = RC
C
IF (UNSAFE) GO TO 30
C
C PRINT ELEMENT IDS THAT HAVE CONVERGED, OR OVER DESIGNED
C
IF (.NOT.FIRST) GO TO 570
FIRST = .FALSE.
CALL PAGE2 (-3)
WRITE (OUTTAP,560) UIM
560 FORMAT (A29,' 2304A, THE FOLLOWING ELEMENTS EITHER CONVERGED (NO',
1 ' PLUS) OR OVER-DESIGNED (PLUS(ES))',/5X,'IN ONE OR MORE ',
2 'SUBCASES, (EACH PLUS INDICATES AN INCREMENTAL PERCENTAGE'
3, ' OF OVER-DESIGN BASED ON CONVERGENCE CRITERION, EPS)',/)
570 XSTAR = (PR(LOCP+4)-1.0) - PARM(2)
J = IFIX(ABS(XSTAR)/PARM(2))
IF (J .GT. 3) J = 3
II = 1
IF (PR(LOCP+4) .LT. 1.0E-8) II = 0
IF (II .EQ. 0) J = 4
EID(NE+1) = IEL(LOCE)
EID(NE+2) = PLUS(J+1)
NE = NE + 2
IF (NE .LT. 20) GO TO 590
NE = 0
CALL PAGE2 (1)
WRITE (OUTTAP,580) EID
580 FORMAT (5X,10(I8,A4))
590 IF (KEL .EQ. -1) GO TO 30
KEL = KEL - 1
CWKBR 9/93 IZK = IZ(KEL)
IZK = IY(KEL)
IF (PR(LOCP+3) .LT. 1.0E-6) II = 0
IF (J.GT.0 .AND. IZK.EQ.-1 .AND. II.NE.0) KCONV = KCONV - 1
IF (II .EQ. 0) GO TO 600
IF (AE1 .GT. PARM(2)) GO TO 30
600 IF (IEL(LOCE) .EQ. IZK) GO TO 30
IF (AE1.LE.PARM(2) .AND. IZK.EQ.-1) GO TO 610
IF (II.EQ.0 .AND. IZK.EQ.-1) GO TO 30
CWKBR 9/93 IZ(KEL) = IEL(LOCE)
IY(KEL) = IEL(LOCE)
CWKBR 9/93 IF (II .EQ. 0) IZ(KEL) = -1
IF (II .EQ. 0) IY(KEL) = -1
KCONV = KCONV + 1
GO TO 30
CWKBR 9/93 610 IZ(KEL) = IEL(LOCE)
610 IY(KEL) = IEL(LOCE)
GO TO 30
C
C EOF
C
630 CONTINUE
IF (NE .GT. 0) WRITE (OUTTAP,580) (EID(J),J=1,NE)
C
C IF KEL=-1 HERE, OR
C IF NUMBER OF ELEMENTS CONVERGED, KORE-KEL, IS LESS THAN NUMBER OF
C ELEMENTS IN THE PROBLEM, NELW/NWDSE, CONVERGENCE IS INCOMPLETE
C
IF (KEL .EQ. -1) GO TO 650
IF (KCONV .LT. NELW/NWDSE) GO TO 650
CWKBR CALL PAGE (-4)
CALL PAGE2 (-4)
WRITE (OUTTAP,640) UIM
640 FORMAT (A29,' 2304B, CONVERGENCE ACHIEVED FOR ALL ELEMENTS ',
1 'REQUESTED, AND IN ALL SUBCASE(S)', /5X,
2 'FULLY-STRESSED DESIGN COMPLETED',/)
CONV = 2.0
GO TO 670
C
C IF NELR IS ZERO, NO ELEMENT MATCH MADE
C
650 IF (NELR .GT. 0) GO TO 670
CALL PAGE2 (-2)
WRITE (OUTTAP,660) UFM
660 FORMAT (A23,' 2295, NO ELEMENTS EXIST FOR OPTIMIZATION.')
COUNT = MAX + 1
C
670 RETURN
END
|
