How to define a torque which complies with a curve relationship with rotational speed ?

hyperlove
hyperlove Altair Community Member
edited October 2020 in Community Q&A

Hello,

 

In Radioss, how to create a torque that is a function (curve) of rotational speed of a certain element node?

 

This node is on a component which is driven by other components. In the process of this explicit analysis, this component's rotational speed is not constant and depends on contacts with other driving components. 

 

Can you advise how to create such a torque?

 

Thank you.

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Answers

  • Andy_20955
    Andy_20955 New Altair Community Member
    edited July 2019

    Hi,

    You can create a spring with property /PROP/SPR_GENE which is zero length then define a skew system or the cordinate system of the spring and define a torque (moment) versus rotational speed curve as fct_ID44, (for x rotation) fct_ID45(for y rotation)  fct_ID46 (for z rotation).

     

    if you want  non-zero length create /PROP/SPR_BEAM with same functions, fct_ID44, (for x rotation) fct_ID45(for y rotation)  fct_ID46 (for z rotation).

     

    Thanks,

    Andy

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