remote point in optistruct

pratik gadve
pratik gadve Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

I am doing suspension analysis in hypermesh and Optistruct solver . I have not used shaft during analysis. So, I want to use remote point at specified location and apply force at contact of tyre and road. I want to connect this remote point to tyre centre using RBE2 link. This tyre centre is also connected to bottom nodes of leaf spring.

 

My doubt is how to set centre of gravity for this RBE3 link at tyre centre ?  (Just like we use ICOG=3 in case of Radioss). This node of tyre centre should be fixed position.

I am not sure.. I should use RBE3 or RBE2 element for this ? Suggest me. 

<?xml version="1.0" encoding="UTF-8"?>remote point.png

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    Hi @pratik gadve

     

    Can you check RBODY in OptiStrut?

     

    You can set CoG and Inertia on RBODY

  • pratik gadve
    pratik gadve Altair Community Member
    edited May 2018
    Altair Forum User said:

    Hi @pratik gadve

     

    Can you check RBODY in OptiStrut?

     

    You can set CoG and Inertia on RBODY

    Ok. Here reference node is nothing but master node on which we apply COG... Right ?

     

    Does Rigid Body link act like Rbe3 here ? I doubt because length from centre of tyre to bottom nodes of leaf spring is different. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    @pratik gadve

     

    I don't see an option with RBE3 and no RBODY cannot behave like RBE3. 

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