Apply moment on axis

Altair Forum User
Altair Forum User
Altair Employee
edited November 2020 in Community Q&A

Dear Sir,

 

I would like to apply a moment on the entire outer surface of the model attached (hollow cylinder). 

I know that normally a moment have to be applied on an RB3 element. 

I created an RBE3 element along the central axis and then connected it to all the nodes on the outer surface (see attached file).

 

Would this make sense? I am not sure that every nodes are then subjected to the same condition.

Is there a better way to apply the moment on an entire axis and not just a point?

 

Thank you in advance

 

<?xml version="1.0" encoding="UTF-8"?>moment-along-axis.thumb.jpg.c82ca403fa8cefa130e94671de01189b.jpg

 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited October 2017

    Hi,

     

    What you are doing should be give you good results.

     

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2017

    Hi Prakash,

     

    What are the default units of the moment? N*m or N*mm?

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2017

    HyperMesh is unit neutral. It is upto user to maintain unit consistency. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2017

    So if I am applying the load in Newton and I leave the material data as default I have to insert the moment in N*mm correct?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2017

    Hi Mike,

     

    Would be better if you have material data with MPA or N/mm, Tonnes or Kg/mm^3 when you have your load components in N and mm which maintains unit consistency and results easily readable and understandable. 

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