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rea2

rigid body simulation

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I am trying to perform a simulation on rigid bodies in hypermesh using radioss as a solver, but the solver shows a very high nodal time step and does not compute the solution. 

Is there a way to assign the nodal time step in hypermesh beforehand? 

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thanks for the reply pranav,

but i would like to restate my question once again, I have only rigid bodies in my simulation and i am applying some forces on it ....but i am getting very high nodal time step and the simulation does not run for the specified time of 15 ms. I have 4-5 rigid bodies with possible penetrations and no contact defined between each other.

regards,

 

 

 

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hi pranav and rea2

is it possible to have only the rigid bodies in your simulation run in radioss? Won't it create a very high nodal time step due to the infinite stiffness of the rigid body?

And if that is the case is there a way to overcome this?

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@rea2

 

If a model has only rigid bodies then Radioss will terminate on first cycle. Include a deformable element in your model (it will control the timestep) as a workaround.

 

@prat

 

Rigid bodies generally have timestep much higher than other finite elements so it is computationally efficient way to simulate components with negligible deformations. 

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