I am trying to model a cylindrical joint. Like an actuator that can only translate in 1 DOF. My cylinder joint length is ~10 inches and I am modelling it ONE CBUSH Element (BAR 2-topology)

1) Is it correct to use 1 element and BAR2 topology?

2) I am giving it PBUSH Element type property and defining my 6 spring constant to determine the stiffness of the cylindrical joint. Is it a correct approach?

3) Since, it will be cylinder joint, I am defining a local LBC to restrict the motion in other 2 axes (so it only translates in one axis). What should I do with the Rotational DOF? little confused on this

Let me know if my approach is good, or is there a better way to tackle this. Thanks

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0 Sanjay Patel over 5 years ago

Hello Shaheer,

BAR2 topology is fine. It would help create 1d elements including CBUSH. These type of connections are generally done via RJOINT. CBUSH/PBUSH will actually prevent the motion. Refer to the RJOINT in quick reference guide for details.

Thanks,

Sanjay.
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0 Sanjay Patel over 5 years ago

Hello Shaheer,

BAR2 topology is fine. It would help create 1d elements including CBUSH. These type of connections are generally done via RJOINT. CBUSH/PBUSH will actually prevent the motion. Refer to the RJOINT in quick reference guide for details.

Thanks,

Sanjay.
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