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[mintuboyapati]

Hello,

I am working on space debris capture simulation using nets. I gave the initial velocity generation for the net in the direction of debris, so that I can observe the capture mechanism. The debris is fixed in space so it cannot move. However, the issue is that the net is moving away from the debris, exactly in the direction opposite to whatever i gave it. I fixed the co-ordinate systems, and also tried giving velocity in multiple directions, but no matter what i do, the net keeps moving away from the debris. Does anyone know how to fix this? I am kind of stuck and would appreciate any help. Thank you!

[Vijay]

Hello Mintu,

A general recommendation is to review the kinetic energy (KE) of that part in the matsum file to ensure there are no additional load factors influencing the motion. It’s important to verify whether gravity or any other boundary condition might be contributing to the behavior.
You can also try applying negative velocities to check whether the direction of motion reverses as expected.

Also refer this example, this might help. Bar Impacting a Rigid Wall — Welcome to LS-DYNA Examples

Regards, 

Vijay 

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