用常应变三角形单元解弹性力学平面问题的程序(7)
发布时间:2021-06-07
发布时间:2021-06-07
DIMENSION LND(NE,3),X(NJ),Y(NJ),D(3,3),B(3,6), * S(3,6),ST(3),P(NJ2),DE(6)
WRITE(6,*)
WRITE(6,*)' ELEMENT STRESSES'
CALL DTE(E,PR,D)
DO 50 IE=1,NE
CALL ATE(IE,NJ,NE,LND,X,Y,AE)
CALL BTE(IE,NJ,NE,LND,X,Y,AE,B)
DO 10 I=1,3
DO 10 J=1,6
S(I,J)=0.
DO 10 K=1,3
10 S(I,J)=S(I,J)+D(I,K)*B(K,J)
DO 20 I=1,3
DO 20 J=1,2
IH=2*(I-1)+J
IW=2*(LND(IE,I)-1)+J
20 DE(IH)=P(IW)
DO 30 I=1,3
ST(I)=0.
DO 30 J=1,6
30 ST(I)=ST(I)+S(I,J)*DE(J)
SGX=ST(1)
SGY=ST(2)
TXY=ST(3)
ASG=(SGX+SGY)*.5
RSG=SQRT(.25*(SGX-SGY)**2+TXY*TXY)
SGMA=ASG+RSG
SGMI=ASG-RSG
IF(SGY.EQ.SGMI) CETA=0.
IF(SGY.NE.SGMI) CETA=90.-57.29578*ATAN * (TXY/(SGY-SGMI))
50 WRITE(6,60) IE,SGX,SGY,TXY,SGMA,SGMI,CETA 60 FORMAT(1X,'ELEMENT NO.=',I4/2X,'SIGX=',E10.4, * 2X,'SIGY=',E10.4,2X,'TXY =',E10.4/2X,'SGMA=', * E10.4,2X,'SGMI=',E10.4,2X,'CETA=',E10.4) END
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