HyperMesh translational joint for ls dyna

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

Could anyone show me how to create the translational joint in HM for dyna?

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Answers

  • tinh
    tinh Altair Community Member
    edited July 2018

    Hi,

    Select menu Preferences>UserProfile => Select profile 'Ls-Dyna' => OK

    enter 1d>joints

    select join type 'translation'

    pick nodes to define the joint

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    Hi,

    Select menu Preferences>UserProfile => Select profile 'Ls-Dyna' => OK

    enter 1d>joints

    select join type 'translation'

    pick nodes to define the joint

    Yes ,I knowen, but how to define the nodal rigid ? 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    the triple nodes like the graph below

    <?xml version="1.0" encoding="UTF-8"?>123.jpg

  • tinh
    tinh Altair Community Member
    edited July 2018

    Hi,

    bind each triple nodes by 1d>rigids, don't forget to bind them with regarding component, too

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    Hi,

    bind each triple nodes by 1d>rigids, don't forget to bind them with regarding component, too 

    Yeah, I do as you telling me . And ..... 

    *** Error 20393 (STR+393)
         Nodal rigid body ID 19 contains node ID 123414
         already used in a rigid body/nodal rigid body definition.


     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    Did you use ls dyna solver? or HW?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    Did you use ls dyna solver? or HW?

    dyna SOLVER

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    Hi @Aurora!

    if i were you i would do a small test-task with only connector in ls prepost. you can see how it works and redo it in HM.

    another way, if you use rigid bodys in ls dyna, you can not connect it by rbe2 instead you should use extra nodes set.=)

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    @Aurora!

    Did you solve problem?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    @Aurora!

    Did you solve problem?

    nope

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    Hi @Aurora!

    if i were you i would do a small test-task with only connector in ls prepost. you can see how it works and redo it in HM.

    another way, if you use rigid bodys in ls dyna, you can not connect it by rbe2 instead you should use extra nodes set.=)

    Yeah,rbe2 element can't connect the rigid elmemt .

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    i had done revolute joints in LS DYNA, but i hadn't problem.

  • tinh
    tinh Altair Community Member
    edited July 2018

    Hi,

    if the component is RIGID, please use XtraNodes to connect the comp with the joint's nodes

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    i had done revolute joints in LS DYNA, but i hadn't problem.

    how did it work? Could u share it to me ? thx

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2018

    Hi,

    if the component is RIGID, please use XtraNodes to connect the comp with the joint's nodes

    thx, I will have a try. but if the component is not rigid ,how to solve it ? Could you give me a advise?

  • tinh
    tinh Altair Community Member
    edited July 2018

    thx, I will have a try. but if the component is not rigid ,how to solve it ? Could you give me a advise?

     

    Bind it with the joint by a rigidlink

     

    F10 check 1d>dependency