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SUBROUTINE SPANL2(IARG)
C*****
C THIS ROUTINE IS PHASE II OF STRESS DATA RECOVERY FOR THE SHEAR AND
C TWIST PANEL ELEMENTS.
C*****
C
C
REAL FRLAST(2)
INTEGER EJECT ,ISHD(7) ,ISTYP(2) ,TYP(4) ,IFOR(1)
C
C
C SDR2 VARIABLE CORE
C
COMMON /ZZZZZZ/ ZZ(1)
C
C BLOCK FOR POINTERS, LOADING TEMPERATURE AND ELEMENT DEFORMATION.
C
COMMON /SDR2X4/
1 DUMMY(33) ,ICSTM
2, NCSTM ,IVEC
3, IVECN ,TEMPLD
4, ELDEFM
C
C SDR2 PHASE II INPUT AND OUTPUT BLOCK.
C
COMMON /SDR2X7/
1 IELID ,ISILNO(4)
2, S(3,4) ,A(2)
3, T ,RATIO(3)
4, SIGS ,RQ(4)
5, RK(4) ,XXXXXX(68)
COMMON /SDR2X7/
1 JSELID ,STRES(3)
2, YYYYYY(96)
COMMON /SDR2X7/
1 JFELID ,FORCES(16)
2, ZZZZZZ(8)
C
C SDR2 SCRATCH BLOCK
C
COMMON /SDR2X8/
1 S1BAR ,TERM
2, TAU(4) ,IDISP
3, IU ,CTU(4)
4, CFRVEC(19)
C
C OUTPUT PRECISION CHECK BLOCK
C
COMMON /SDR2X9/ NCHK,ISUB,ILD,FRTMEI(2),TWOTOP,FNCHK
C
COMMON /SYSTEM/ IBFSZ ,NOUT ,IDM(9) ,LINE
C
EQUIVALENCE(STRES(1),TAUMAX)
EQUIVALENCE(STRES(2),TAUAVG)
EQUIVALENCE(STRES(3),MARSAF,SAFMAR)
EQUIVALENCE(FORCES(1),IFOR(1),P13)
EQUIVALENCE(FORCES(2),P24)
C//////// FOLLOWING 8 FORCES MAY NOT BE EQUIVALENCED CORRECTLY YET/////
EQUIVALENCE(FORCES(1),F1 )
EQUIVALENCE(FORCES(2),F2 )
EQUIVALENCE(FORCES(3),F3 )
EQUIVALENCE(FORCES(4),F4 )
EQUIVALENCE(FORCES(5),F5 )
EQUIVALENCE(FORCES(6),F6 )
EQUIVALENCE(FORCES(7),F7 )
EQUIVALENCE(FORCES(8),F8 )
EQUIVALENCE(FORCES( 9),RK1)
EQUIVALENCE(FORCES(10),Q1)
EQUIVALENCE(FORCES(11),RK2)
EQUIVALENCE(FORCES(12),Q2)
EQUIVALENCE(FORCES(13),RK3)
EQUIVALENCE(FORCES(14),Q3)
EQUIVALENCE(FORCES(15),RK4)
EQUIVALENCE(FORCES(16),Q4)
EQUIVALENCE(ISHD(1),LSUB)
EQUIVALENCE(ISHD(2),LLD)
EQUIVALENCE(ISHD(6),FRLAST(1))
EQUIVALENCE(CFRVEC(1),IFRVEC)
C
DATA LSUB,LLD,FRLAST / 2*-1, -1.0E30, -1.0E30 /
DATA TYP / 4HSHEA,1HR, 4HTWIS,1HT /
DATA LARG / 0 /
C
IDISP = IVEC - 1
C
C COMPUTE AVERAGE STRESS ALONG SIDE 1 IF WE ARE DEALING WITH A SHEAR
C PANEL OR MEAN FIBRE SHEAR STRESS IF WE HAVE A TWIST PANEL.
C
CS1BR = 0.0
S1BAR = 0.0
DO 10 I = 1,4
IU = IDISP + ISILNO(I)
IF (IARG .EQ. 5) IU = IU + 3
CALL SMMATS(S(1,I),3,1,1,ZZ(IU),3,1,0,TERM,CTRM)
CS1BR = CS1BR + CTRM
10 S1BAR = S1BAR + TERM
C
C COMPUTE STRESSES AT THE CORNERS
C
TAU(1) = RATIO(1) * S1BAR
TAU(2) = S1BAR / RATIO(1)
TAU(3) = RATIO(2) * S1BAR
TAU(4) = RATIO(3) * S1BAR
CTU(1) = ABS (RATIO(1)) * CS1BR
CTU(2) = CS1BR / ABS (RATIO(1))
CTU(3) = ABS (RATIO(2)) * CS1BR
CTU(4) = ABS (RATIO(3)) * CS1BR
C
C COMPUTE AVERAGE STRESS
C
TAUAVG = 0.25 * (TAU(1) + TAU(2) + TAU(3) + TAU(4))
CFRVEC(3) = 0.25E0 * (CTU(1) + CTU(2) + CTU(3) + CTU(4) )
C
C COMPUTE MAXIMUM STRESS
C
TAUMAX = ABS(TAU(1))
CFRVEC(2) = TAUMAX
DO 50 I = 2,4
IF (ABS(TAU(I)) .GT. TAUMAX) TAUMAX = ABS(TAU(I))
IF (CTU(I).GT.CFRVEC(2)) CFRVEC(2) = CTU(I)
50 CONTINUE
C
C COMPUTE MARGIN OF SAFETY
C
IF(SIGS.LE.0.0)GO TO 100
IF(TAUMAX.EQ.0.0)GO TO 100
SAFMAR=SIGS/TAUMAX-1.0
GO TO 101
100 MARSAF=1
101 CONTINUE
C
C FOR A SHEAR PANEL COMPUTE LOADS, FOR A TWIST PANEL COMPUTE STRESSES.
C
IF( IARG .NE. 4 ) GO TO 70
C
C SHEAR PANEL FORCES
C
Q1 = S1BAR*T / SQRT( 1.0 + ( RQ(4)/RK(1) )**2)
Q2 = S1BAR * RQ(1) / SQRT( 1.0 + ( RQ(4)/RK(2) )**2)
Q3 = S1BAR * RQ(2) / SQRT( 1.0 + ( RQ(4)/RK(3) )**2)
Q4 = S1BAR * RQ(3) / SQRT( 1.0 + ( RQ(4)/RK(4) )**2)
CFRVEC(13) = CS1BR * ABS(T) / SQRT (1.0E0 + (RQ(4)/RK(1) ) **2 )
DO 60 I = 1,3
F = SQRT (1.0E0 + ( RQ(4)/RK(I+1) ) **2 )
FORCES(2*I+10) = S1BAR * RQ(I) / F
60 CFRVEC(2*I+13) = CS1BR * ABS(RQ(I)) / F
C
F = ABS (RQ(4))
RK1 = -( Q1 + Q4 ) * RQ(4)
RK2 = -( Q1 + Q2 ) * RQ(4)
RK3 = -( Q2 + Q3 ) * RQ(4)
RK4 = -( Q3 + Q4 ) * RQ(4)
CFRVEC(12) = (CFRVEC(13) + CFRVEC(19)) * F
CFRVEC(14) = (CFRVEC(13) + CFRVEC(15)) * F
CFRVEC(16) = (CFRVEC(15) + CFRVEC(17)) * F
CFRVEC(18) = (CFRVEC(17) + CFRVEC(19)) * F
F1 = Q4 * RK(4)
F2 = Q1 * RK(1)
F5 = Q2 * RK(2)
F6 = Q3 * RK(3)
CFRVEC(4) = CFRVEC(19) * ABS (RK(4) )
CFRVEC(5) = CFRVEC(13) * ABS (RK(1) )
CFRVEC(8) = CFRVEC(15) * ABS (RK(2) )
CFRVEC(9) = CFRVEC(17) * ABS (RK(3) )
F3 = -F2
F4 = -F5
F7 = -F6
F8 = -F1
CFRVEC( 6) = CFRVEC(5)
CFRVEC( 7) = CFRVEC(8)
CFRVEC(10) = CFRVEC(9)
CFRVEC(11) = CFRVEC(4)
GO TO 80
C
C TWIST STRESSES
C
70 P13 = A(1) * S1BAR * T
P24 = A(2) * S1BAR * T
TERM = T / 6.0
CFRVEC(4) = A(1) * CS1BR * T
CFRVEC(5) = A(2) * CS1BR * T
P13 = P13 * TERM
P24 = P24 * TERM
CFRVEC(4) = ABS (CFRVEC(4) * TERM)
CFRVEC(5) = ABS (CFRVEC(5) *TERM)
C
C STORE ELEMENT ID IN OUTPUT SLOTS.
C
80 JSELID = IELID
JFELID = IELID
IF (NCHK.LE.0) GO TO 260
C
C . CHECK PRECISION...
C
K = 0
C
C . STRESSES...
CALL SDRCHK (STRES(1),CFRVEC(2),2,K)
C
C . FORCES...
I = 16
IF (IARG.NE.4) I = 2
CALL SDRCHK (FORCES(1),CFRVEC(4),I,K)
IF (K.EQ.0) GO TO 260
C
C . LIMITS EXCEEDED...
IFRVEC = IELID
I = 1
IF (IARG.NE.4) I = 3
ISTYP(1) = TYP(I)
ISTYP(2) = TYP(I+1)
J = 0
C
IF (LSUB.EQ.ISUB .AND. FRLAST(1).EQ.FRTMEI(1) .AND. LARG.EQ.IARG
1.AND. LLD .EQ.ILD .AND. FRLAST(2).EQ.FRTMEI(2) ) GO TO 230
LSUB = ISUB
LARG = IARG
LLD = ILD
FRLAST(1) = FRTMEI(1)
FRLAST(2) = FRTMEI(2)
J = 2
CALL PAGE1
200 CALL SD2RHD (ISHD,J)
LINE = LINE + 1
IF (IARG.EQ.4) WRITE(NOUT,210)
IF (IARG.NE.4) WRITE(NOUT,220)
210 FORMAT (7X,4HTYPE,5X,42HEID SMAX SAVE F1-4 F1-2 F2-1 F2-3 F
1,60H3-2 F3-4 F4-3 F4-1 K-1 SH12 K-2 SH23 K-3 SH34
2, 9HK-4 SH41)
220 FORMAT (7X,4HTYPE,5X,27HEID SMAX SAVE M1-3 M2-4)
GO TO 240
230 IF (EJECT(2).NE.0) GO TO 200
240 I = 19
IF (IARG.NE.4) I = 5
WRITE(NOUT,250) ISTYP,(CFRVEC(J),J=1,I)
250 FORMAT (1H0,6X,A4,A1,I7,18F6.1)
C
260 CONTINUE
RETURN
END
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