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Found 4 results

1. ## How to apply an initial velocity along vector

Dear community, I am pretty new with Radioss and I want to ask the following: Is it possible to apply an initial velocity to a component along a defined vector? Thx for help
2. ## How to impose an initial velocity on a rigid body?

Hello everyone, I define a rigid body by selecting three components as slave nodes and the primary node is selected as calculated node. An initial velocity and gravity load were wanted to be imposed. I tried, but it didn't work. So I want to know how to impose initial velocity and gravity load on rigid body correctly? And how to select the master node of the rigid body? Best Wishes! Roy Duan
3. ## Modifying initial velocity

Hi, I want to change initial velocity of this model;. In manual, check load case and initial velocity. But i cant find any velocity of this model. Please show me how to change initial velocity of this model. File attached Thanks. Baeseonghun
4. ## RIGID BODY - Inertia inputs

Hi all, I model a hammer, impacting a component. To reduce computation time, and as I don't need any information about the hammer's stresses and strains, I want to model it as a Rigid Body. Though, I wonder about inertia and mass input in rigid bodies, as I get the following warning and error : WARNING ID : 542 ** WARNING RIGID BODY INERTIA ERROR ID : 274 ** ERROR IN RIGID BODY DEFINITION (INERTIA) And here my input: /RBODY/402 HAMMER # N_master I_sens I_skew I_spher MASS Grnod_id IKREM I_CoG Surf_id 39178 0 0 805 0 # Jxx Jyy Jzz 1.87779E+06 371038 -1.87779E+06 # Jxy Jyz Jxz 0 0 404038 # Ioptoff 0 If I delete inertia inputs, my computation works fine. However I need mass, because I work with initial velocity and mass is therefore important. So I wonder : - I input material (density) and mesh, so maybe I do not need inertia and mass input OR - maybe I should input MASS in rigid body OR - do what I did but something is still wrong ... Thank you, Alice
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