** ** ABAQUS Input Deck - Example Problems Manual ** ** Resolving overconstraints in a ** multibody mechanism ** ***************************************************** *HEADING Multibody mechanism model - CARDAN and *CONNECTOR ELASTICITY (Parts and Assembly) ** ** *INCLUDE, INPUT=mbmech_cardan_elas_parts.inp ** ** *ASSEMBLY, NAME=SATELLITE ** ** Instances of the above created parts ** *INSTANCE, NAME=DISH, PART=DISH *END INSTANCE *INSTANCE, NAME=LINK, PART=LINK *END INSTANCE *INSTANCE, NAME=CRANK, PART=CRANK *END INSTANCE *INSTANCE, NAME=TRANS_CONNECT, PART=TRANS_CONNECT *END INSTANCE *INSTANCE, NAME=TRANS_GUIDE, PART=TRANS_GUIDE *END INSTANCE *INSTANCE, NAME=ROD, PART=ROD *END INSTANCE *INSTANCE, NAME=ROD_GUIDE, PART=ROD_GUIDE *END INSTANCE *INSTANCE, NAME=SLIDE_BLOCK, PART=SLIDE_BLOCK *END INSTANCE *INSTANCE, NAME=SLIDE_GUIDE, PART=SLIDE_GUIDE *END INSTANCE ** ** Element 2#### are connector elements ** *ELEMENT, TYPE=CONN3D2, ELSET=JOINT1 20001, CRANK.3155, LINK.781 *CONNECTOR SECTION, ELSET=JOINT1 JOIN, CONSTANT VELOCITY ORI1A, ORI1B *ORIENTATION, NAME=ORI1A, SYSTEM=ZRECTANGULAR 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 1, 0.0 *ORIENTATION, NAME=ORI1B, SYSTEM=ZRECTANGULAR 0.5, 0.224143868, 0.836516303, 0.0, 1.0, 0.0 1, 0.0 **============================================ *ELEMENT, TYPE=CONN3D2, ELSET=JOINT2 20005, DISH.780, LINK.3156 *CONNECTOR SECTION, ELSET=JOINT2 JOIN, CONSTANT VELOCITY ORI2A, ORI2B *ORIENTATION, NAME=ORI2A, SYSTEM=ZRECTANGULAR 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 1, 0.0 *ORIENTATION, NAME=ORI2B, SYSTEM=ZRECTANGULAR 0.5, 0.224143868, 0.836516303, 0.0, 1.0, 0.0 1, 0.0 **============================================ *ELEMENT, TYPE=CONN3D2, ELSET=JOINT3 20010, DISH.3157, TRANS_CONNECT.427 *CONNECTOR SECTION, ELSET=JOINT3 JOIN, **OPTIONAL ORIENTATION, LEAVE A BLANK LINE *ORIENTATION, NAME=ORI3A 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 1, 0.0 **============================================ *ELEMENT, TYPE=CONN3D2, ELSET=JOINT4 20015, SLIDE_BLOCK.1539, TRANS_CONNECT.3158 *CONNECTOR SECTION, ELSET=JOINT4, BEHAVIOR=BHV4 JOIN, CARDAN ORI4A, *ORIENTATION, NAME=ORI4A 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 1, 0.0 **============================================ *ELEMENT, TYPE=CONN3D2, ELSET=JOINT5 20020, SLIDE_GUIDE.2027, SLIDE_BLOCK.1575 *CONNECTOR SECTION, ELSET=JOINT5 SLOT, ALIGN ORI5A, *ORIENTATION, NAME=ORI5A 0.0, 1.0, 0.0, 1.0, 0.0, 0.0 1, 0.0 **============================================ *ELEMENT, TYPE=CONN3D2, ELSET=JOINT6 20025, TRANS_GUIDE.2321, TRANS_CONNECT.863 *CONNECTOR SECTION, ELSET=JOINT6 SLOT, ALIGN ORI6A, *ORIENTATION, NAME=ORI6A 0.0, 1.0, 0.0, 1.0, 0.0, 0.0 1, 0.0 **============================================ *ELEMENT, TYPE=CONN3D2, ELSET=JOINT7 20030, ROD_GUIDE.3031, TRANS_GUIDE.3159 *CONNECTOR SECTION, ELSET=JOINT7 SLOT, REVOLUTE ORI7A, *ORIENTATION, NAME=ORI7A 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 1, 0.0 **============================================ *ELEMENT, TYPE=CONN3D2, ELSET=JOINT8 20035, ROD.2824, ROD_GUIDE.3134 *CONNECTOR SECTION, ELSET=JOINT8 SLOT, ALIGN ORI8A, *ORIENTATION, NAME=ORI8A 1.0, 0.0, 0.0, 0.0, 1.0, 0.0 1, 0.0 **============================================ *END ASSEMBLY *MATERIAL, NAME=ALUMINUM *DENSITY 2.7E-9, 0.0 *ELASTIC, TYPE = ISOTROPIC 0.7E8, 0.27 ** ** *CONNECTOR BEHAVIOR, NAME=BHV4 *CONNECTOR ELASTICITY, COMPONENT=5 1.0E5, *CONNECTOR ELASTICITY, COMPONENT=6 1.0E5, ** ***************** END OF MODEL DATA ***************** ** *STEP, NLGEOM, INC=500 Rotate crank to begin motion *STATIC, DIRECT 0.05, 1.0, 0.05, 0.05 ** ** Fixed boundary conditions ** *BOUNDARY DISH.10001, 1, 2, 0.0 DISH.10001, 4, 5, 0.0 CRANK.10003, 1, 2, 0.0 CRANK.10003, 4, 5, 0.0 SLIDE_GUIDE.10006, 1, 6, 0.0 ROD.10009, 1, 6, 0.0 ** ** Driven boundary conditions ** *BOUNDARY CRANK.10003, 6, 6, 6.283185 ** ** Output requests ** *OUTPUT, FIELD, FREQUENCY=1000 *NODE OUTPUT U, *OUTPUT, HISTORY, FREQUENCY=1 *ELEMENT OUTPUT, ELSET=SATELLITE.JOINT6 CTM1, CTM2 ** *END STEP