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1、 /COM,ANSYS MEDIA REL. 121 (10/15/2009) REF. VERIF. MANUAL: REL. 121 /VERIFY,VM239 /OUT,SCRATCH /PREP7 /OUT /COM /TITLE, VM239, MECHANICS OF THE REVOLUTE AND UNIVERSAL JOINTS /COM /COM /COM J.E. SHIGLEY AND J.J. UICKER, “THEORY OF MACHINES AND /COM MECHANISMS“ 2ND EDITION, P. 115, 1995. /COM /COM *A
2、NALYSIS USING ALL FLEXIBLE BODIES /COM /COM !C* ADD UNIVERSAL JOINT MECHANISM TO THE ABOVE PROBLEM. !C* PERFORM ANALYSIS USING ALL FLEXIBLE BODIES /OUT,SCRATCH PI=4*ATAN(1.0) MULT = 12 PI15 = PI/MULT ANG = PI15*3 R = .5 ! LENGTH OF ROTATING ARM L = 1.5 ! LENGTH OF CRANK ZDIST = L*SIN(ACOS(R/L) !C* D
3、EFINING ELEMENTS AND MATERIAL PROPERTIES ET,1,BEAM188 ! BEAM ELEMENTS ET,2,MPC184,7 ! UNIVERSAL JOINT ET,3,MPC184,6 ! REVOLUTE JOINT ET,4,MPC184,3 ! SLIDER MP,EX,1,30E6 MP,PRXY,1,0.33 MP,DENS,1,10.0 TYPE,1 MAT, 1 SECTYPE, 1, BEAM, CSOLID !其中 csolid 为截面类型 SECDATA, .05 !定义的圆柱为 0.05 !C* CREATING NODES
4、AND LINK ELEMENTS N,1, 0,0,0 N,2, 1,0,0 N,3, 1,0,0 N,4, 1+COS(ANG), SIN(ANG), 0.0 N,5, 1+COS(ANG), SIN(ANG), 0.0 N,6, 2+COS(ANG),SIN(ANG),0N,8, 2+COS(ANG),.5+SIN(ANG),0 N,9, 2+COS(ANG),.5+SIN(ANG),0 N,10, 2+COS(ANG),SIN(ANG),ZDIST N,11, 2+COS(ANG),SIN(ANG),.75 N,12, 2+COS(ANG),SIN(ANG),2.25 N,13, 2+
5、COS(ANG),SIN(ANG),2.26 N,14, 2+COS(ANG),SIN(ANG),.74 TYPE,1 MAT, 1 SECNUM, 1 EN,1, 1,2 EN,2, 3,4 EN,3, 5,6 EN,4, 6,8 EN,5, 9,10 EN,6, 11,12 EN,11, 12,13 EN,12, 11,14 LOCAL,11,0, 0,0,0,-90.0 ! DEFINING LOCAL CSYS FOR UNIV. JOINTS LOCAL,12,0, 0,0,0,-45.0 LOCAL,14,0, 0,0,0, 0, ! DEFINING LOCAL CSYS FOR
6、 REVO. JOINTS LOCAL,15,0, 0,0,0, 0, CSLIST !C* CREATING UNIVERSAL CONNECTIVITY ELEMENTS SECTYPE,2,JOIN,UNIV,TESTING02 ! DEFINING UNIVERSAL JOINT SECJOINT,1,11,12 TYPE,2 SECNUM,2 EN,7, 2,3SECTYPE,3,JOIN,UNIV,TESTING03 ! DEFINING UNIVERSAL JOINT SECJOINT,1,11,12 TYPE,2 SECNUM,3 EN,8, 5,4!C* CREATING R
7、EVOLUTE CONNECTIVITY ELEMENTS SECTYPE,4,JOIN,REVO,TESTING04 ! DEFINING REVOLUTE JOINT SECJOINT,14,15 TYPE,3 SECNUM,4 EN,9, 8,9!C* CREATING SLIDER CONNECTIVITY ELEMENTS TYPE,4 EN,10, 10,11,12 CSYS, 12 NROTAT, 4 CSYS,0 /SOLU ! SOLUTION CSYS,0 ANTYPE, STAT NLGEOM, ON ! LARGE DEFLECTION OPTION TIME, 1.0
8、 NSUBST, 32, 32, 32 D,1,UX,0,UY,UZ,ROTY,ROTZ D,6,UX,0,UY,UZ,ROTY,ROTZ NSEL,S,NODE,13,14,1 D,ALL,ALL ALLSEL,ALL D,1,ROTX,2*PI OUTRES, ALL, ALL !C* NOTE: THE FORCES IN THIS PROBLEM ARE REALLY ZERO SINCE !C* THIS IS EFFECTIVELY A RIGID BODY ROTATION CNVTOL,F,1.0 CNVTOL,M,1.0 SOLVE FINISH /POST26 NUMVAR
9、,200 ! TIME-HISTORY POSTPROCESSOR NSOL,2,1,ROT,X,ROTX_1 NSOL,3,4,ROT,Y,ROTX_4 NSOL,4,6,ROT,X,ROTX_6 STORE,MERGE PROD, 5, 2, , , , , , 1.0*180/PI PROD, 6, 3, , , , , , 1.0*180/PI PROD, 7, 4, , , , , , 1.0*180/PI /AXLAB, X, Twist Angle of Driving Shaft !*传动轴扭转角 /AXLAB, Y, Twist Angle of Driven Shaft !
10、*从动轴扭转角 /XRANGE, 0.0, 360 /YRANGE, 0.0, 360 /GROPT, DIVX, 8 /GROPT, DIVY, 8 XVAR,5 PLVAR,6 PLVAR,7FINISH /POST1 ! GENERAL POSTPROCESSOR SET,4 NSEL,S,NODE,10 *GET,X1,NODE,10,U,Z ALLSEL,ALLSET,8 NSEL,S,NODE,10 *GET,X2,NODE,10,U,Z ALLSEL,ALLSET,12 NSEL,S,NODE,10 *GET,X3,NODE,10,U,Z ALLSEL,ALLSET,16 NSE
11、L,S,NODE,10 *GET,X4,NODE,10,U,Z ALLSEL,ALL*DIM,LABEL,CHAR,3 *DIM,VALUE,3,4 LABEL(1) = PI/4,PI/2,3*PI/4 *VFILL,VALUE(1,1),DATA,0.39708,0.58579,0.39708 *VFILL,VALUE(1,2),DATA,ABS(X1),ABS(X2),ABS(X3) *VFILL,VALUE(1,3),DATA,ABS(X1/0.39708),ABS(X2/0.58579),ABS(X3/0.39708) SAVE,TABLE_1 FINISH/CLEAR,NOSTAR
12、T /OUT /TITLE, VM239, MECHANICS OF THE REVOLUTE AND UNIVERSAL JOINTS /COM /COM /COM * PERFORM ANALYSIS USING ALL RIGID BODIES /COM /COM /OUT,SCRATCH /PREP7 PI=4*ATAN(1.0) MULT = 12 PI15 = PI/MULT ANG = PI15*3 R = .5 ! LENGTH OF ROTATING ARM L = 1.5 ! LENGTH OF CRANK ZDIST = L*SIN(ACOS(R/L) C* DEFINI
13、NG ELEMENTS, KEY OPTIONS AND MATERIAL PROPERTIES ET,1,BEAM188 ! BEAM ELEMENTS ET,2,MPC184,7 ! UNIVERSAL JOINT ET,3,MPC184,6 ! REVOLUTE JOINT ET,4,MPC184,3 ! SLIDER ET,11,TARGE170 ! TARGET ELEMENT KEYOPT,11,2,1 ! TARGET ELEMENT DEFINED AS RIGID BODY MP,EX,1,30E6 MP,PRXY,1,0.33 MP,DENS,1,10.0 C* CREAT
14、ING NODES AND LINK ELEMENTS N,1, 0,0,0 N,2, 1,0,0 N,3, 1,0,0 N,4, 1+COS(ANG), SIN(ANG), 0.0 N,5, 1+COS(ANG), SIN(ANG), 0.0 N,6, 2+COS(ANG),SIN(ANG),0 N,8, 2+COS(ANG),.5+SIN(ANG),0 N,9, 2+COS(ANG),.5+SIN(ANG),0 N,10, 2+COS(ANG),SIN(ANG),ZDIST N,11, 2+COS(ANG),SIN(ANG),.75 N,12, 2+COS(ANG),SIN(ANG),2.25N,13, 2+COS(ANG),SIN(ANG),2.26 ! DEFINE RIGID BODIES TYPE,11 REAL,11 EN,1, 1,2 ! TARGET ELEMENT FOR 1ST RIGID BODY REAL, 12 EN,2, 3,4 ! TARGET ELEMENT FOR 2ND RIGID BODYREAL, 13 EN,3, 6,5 EN,4, 6,8 ! TARGET ELEMENTS FOR 3RD RIG
