Rigid Body Forces

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

hello,

 I want to read rigid body forces in the radioss ( Hypercrash), how can i get this results?

 

Best,

Sara

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Answers

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

    Hi Sara,

    To get the forces for the rigid bodies you need to put it in time history. /TH/RBODY/thgroup_id. To perform the same in HyperCrash, select the rigid body>>right click and select data history>>yes.

    In HyperGraph, select the T01 file from which you can plot the rigid body forces.

     

     

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

     

    <?xml version="1.0" encoding="UTF-8"?>rwall_t01.PNG

  • jsk459
    jsk459 Altair Community Member
    edited April 2018

    Hi @George P Johnson

     

    Adding  /TH/RBODY/thgroup_id. will help to readout the overall force extracted from the Rigid body node ?  

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2018

    Hi,

    Using /TH/RBODY you can extract the results in that rigid body elements.

    If you want for that master node create a /TH/NODE output block for that node.

     

    Please go through the Help menu on /TH/RBODY and /TH/NODE where all the outputs extracted are shown.

  • jsk459
    jsk459 Altair Community Member
    edited April 2018

    Hi ,

     

    I have created output block /TH/NODE for the master node of the rigid body. But it is showing error as no variables has defined. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2018

    Hi,

    Once the output block is defined give the variable number as 1 and put DEF as the variable so that all default outputs will be extracted.

     

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

  • jsk459
    jsk459 Altair Community Member
    edited April 2018

    Hi ,

     

    Thanks and now its working fine. For TH/RIGIDBODY we are getting force at 3 directions. The resultant force was not mentioned at the output. How can i calculate/convert the same ?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2018

    Hi,

    For /TH/RBODY you will get TF in results which is resultant force.

     

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