How to apply torque/moment.

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

Hi,

 

I have created a block with Hexa elements and shell elements with rigid body at 1 mm distance from block. please find attached image file.

 

Block is going to impact over rigid shell with 50 N-mm of torque.

 

<?xml version="1.0" encoding="UTF-8"?>impact.thumb.JPG.7b95594bbf36420194d57eb0185841b5.JPG

 

Type-7 contact is defined between block and shell elements. 

 

problem is solving without error but in contour plot rigid body moved near to block and block is swinging. as shown in below picture. 

 

impact1.JPG.af191d02bc12d71e2d5e5e2b5f58493a.JPG

 

is there any method to define torque in Radioss?

 

 

Thanks and Regards

Narasimhamurthy

 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2017

    Hi Narasimhamurthy,

    Torque can be applied by selecting the concentrated load from the BCs Manager and selecting the direction plane (XX, YY or ZZ).

    <?xml version="1.0" encoding="UTF-8"?>ATT00002TIME20131010-045048.jpg

  • narasimhamurthy
    narasimhamurthy Altair Community Member
    edited April 2017

    yes, have applied in concentrated load only.

     

     

     

    Capture2.JPG.2f360e4edfc48cbdf6b3f09f41ff041c.JPG

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2017

    Hi Narasimhamurthy,

    Can you provide the files for better understanding.

  • narasimhamurthy
    narasimhamurthy Altair Community Member
    edited November 2020

    Please find attached starter and engine files.

    Unable to find an attachment - read this blog

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2020

    Hi Narasimhamurthy,

    The model setup seems to be fine and the model behavior is also as defined. Can you please elaborate the problem you are facing.

    I just moved the rigid body and increased the CLOAD to review the behavior and the same is attached along, 

    Unable to find an attachment - read this blog

  • narasimhamurthy
    narasimhamurthy Altair Community Member
    edited April 2017

    Block is not rotating about rigid body master node axis, where we specified torque. 

     

    Rigid body moved near to block.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2017

    Hi Narasimhamurthy,

    Please find the attached image. The block is moving in the same direction as defined.

    <?xml version="1.0" encoding="UTF-8"?>Capture4.PNG

  • narasimhamurthy
    narasimhamurthy Altair Community Member
    edited April 2017

    yes, Direction is good but rotating point is different.

     

  • narasimhamurthy
    narasimhamurthy Altair Community Member
    edited April 2017

    <?xml version="1.0" encoding="UTF-8"?>Capture11.JPG

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2017

    Hi Narasimhamurthy,

    Now I got your query.

    Keep the ICOG of the rigid body to 3 and run the analysis.

  • hyperlove
    hyperlove Altair Community Member
    edited July 2019

    Hi Narasimhamurthy,

    Now I got your query.

    Keep the ICOG of the rigid body to 3 and run the analysis.

     

    Yes. ICOG=3 in the /RBODY keyword should be the solution.