i mean do some thing make abaqus understand that if i put a mass on a point in space , if that point move anywhere mass will also moves with it , that what i mean , if that can done by just put that mass in a datum point for example ??
if i defined mpc link between that point which i defined mass on it , is that mean that mpc link is work with point only and mass together ???
if I understood your question correctly, you want to apply a point mass then according to the manual go to the Property or Interaction module: Special Inertia Create: Point mass/inertia: select point: Magnitude: Isotropic: mass magnitude.
I do not know much about MPCs, but if you are attaching a spring to your mass then I believe the mass should move in space according to the stiffness of the spring.
I hope this helps.
Mr. El-Ghobary,
defining Mass is not a complex task. Important to know what type of link is used and why. MPC is very general what kind of MPC's have you used?
=MPC_DIST ABAQUS Distributed coupling
=MPC_GROUND Ground
=MPC_PLANE Plane
=MPC_JOINT Rigid joint
=MPC_KINE Kinematic coupling
=MPC_LINK Inextensional coupling
=MPC_PNTSURF Point to surface
=MPC_RBE3 NASTRAN RBE3
=MPC_SLIDER Slider coupling
regarding what are you expecting to see in your result you should define one of them. I advice you to compare different types in order to understand the function of each.
Best Regards,
Tamer Qaimari
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