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1、SUBROUTINECRANK(N1,N2,R,TH,W,A,P,VP,AP,NP)IMPLICITREAL*8(A-H,O-Z)REAL*8P(NP,2),VP(NP,2),AP(NP,2)W2=W*WVP(N1,1)=0.0D0VP(N1,2)=0.0D0AP(N1,1)=0.0D0AP(N1,2)=0.0D0RX=R*DCOS(TH)RY=R*DSIN(TH)P(N2,1)=P(N1,1)+RXP(N2,2)=P(N1,2)+RYVP(N2,1)=-RY*WVP(N2,2)=RX*WAP(N2,1)=-RY
2、*A-RX*W2AP(N2,2)=RX*A-RY*W2RETURNENDSUBROUTINECRANK2(N1,N2,N3,R,S,PHI,TH,W,A,P,VP,AP,NP)IMPLICITREAL*8(A-H,O-Z)REAL*8P(NP,2),VP(NP,2),AP(NP,2)W2=W*WVP(N1,1)=0.0D0VP(N1,2)=0.0D0AP(N1,1)=0.0D0AP(N1,2)=0.0D0RX=R*DCOS(TH)RY=R*DSIN(TH)SX=S*DCOS(TH+PHI)SY=S*DSIN(TH
3、+PHI)P(N2,1)=P(N1,1)+RXP(N2,2)=P(N1,2)+RYP(N3,1)=P(N1,1)+SXP(N3,2)=P(N1,2)+SYVP(N2,1)=-RY*WVP(N2,2)=RX*WVP(N3,1)=-SY*WVP(N3,2)=SX*WAP(N2,1)=-RY*A-RX*W2AP(N2,2)=RX*A-RY*W2AP(N3,1)=-SY*A-SX*W2AP(N3,2)=SX*A-SY*W2RETURNENDSUBROUTINEPAYAD(M,N1,N2,N3,R1,R2,TH1,TH2,
4、P,NP)IMPLICITREAL*8(A-H,O-Z)REAL*8P(NP,2)LOGICALPRNTPRNT=.FALSE.IF(N1.LT.0)PRNT=.FALSE.DELX=P(N2,1)-P(N1,1)IF(DABS(DELX).LT.1.0D-10)DELX=1.0D-10DELY=P(N2,2)-P(N1,2)PHI=DATAN2(DELY,DELX)SSQ=(P(N2,1)-P(N1,1)**2+(P(N2,2)-P(N1,2))**2S=DEQRT(SSQ)TEST=S-(R1+R2)IF(T
5、EST)40,40,50040TEST=DABS(R1-R2)-SIF(TEST)50,50,50050CONTINUECOSIN=(R1**2-R2**2+SSQ)/(2.0D0*R1*S)ALF=DATAN2(DSQRT(1.0D0-COSIN**2),COSIN)IF(M)200,100,100100TH=PHI+ALFGOTO300200TH=PHI-ALF300CONTINUERC=R1*DCOS(TH)RS=R1*DSIN(TH)P(N3,1)=P(N1,1)+RCP(N3,2)=P(N1,2)+RS
6、TH1=DATAN2(RS,RC)PS=P(N3,2)-P(N2,2)PC=P(N3,1)-P(N2,1)TH2=DATAN2(PS,PC)RETURN500IF(PRNT)WRITE(*,600)600FORMAT(3X,'DYADCANNOTBEASSEMBLED.'/)ENDSUBROUTINEVDYAD(M,N1,N2,N3,R1,R2,TH1,TH2,P,W1,W2,VP,NP)IMPLICITREAL*8(A-H,O-Z)REAL*8P(NP,2),VP(NP,2)CALLPDYAD(M,N1,N2,
7、N3,R1,R2,TH1,TH2,P,NP)R2X=P(N3,1)-P(N2,1)R2Y=P(N3,2)-P(N2,2)A1=(VP(N2,1)-VP(N1,1))*R2XA2=(VP(N2,2)-VP(N1,2))*R2YR1X=P(N3,1)-P(N1,1)R1Y=P(N3,2)-P(N1,2)C1=R1Y*R2XC2=R2Y*R1XDET=C1-C2B1=(VP(N2,2)-VP(N1,2))*R1YB2=(VP(N2,1)-VP(N1,1))*R1XW1=-(A1+A2)/DETW2=-(B1+B2)/D
8、ETVP(N3,1)=VP(N1,1)-W1*R1YVP(N3,2)=VP(N1,2)+W1*R1XRETURNENDSUBROUTINEADYAD(M,N1,N2,N3,R1,R2,TH1,TH2,P,W1,W2,VP,A1,A2,AP,NP)IMPLICITREAL*8(A-H,O-Z)REAL*8P(NP,2),VP(NP,2),AP(NP,2)CALLVDYAD(
