Results 1 to 3 of 3

Thread: Applying Loads which expressed in local Frame?

  1. #1
    Join Date
    Mar 2017
    Location
    Patra Greece
    Posts
    24

    Default Applying Loads which expressed in local Frame?

    Hello everyone,

    I would like to ask if there is any type of load (Forces or Moments mainly) which the user can give, where it is expressed in local frame of a part and not in the global frame. For example the Body load and the rigid loads if i am not mistaken are in global frames. And let me give an example to avoid a misunderstood. Let assume a rigid body, a bone where I would like to applying a force in x-axis which is expressed in local frame (so force direction follows the motion of bone) is any way to set that load or I have to set it in the fix global frame? Thanks for your time.

    Best,
    Michail

  2. #2
    Join Date
    Nov 2007
    Location
    Salt Lake City, UTAH
    Posts
    1,683

    Default

    Hi Michail,

    All forces are defined in the global coordinate system. However, you can make the force follow the rotation of the rigid body that it is attached too. To do this, set the type attribute to follow.
    Code:
    <rigid_body mat="1">
      <force bc="x" type="follow" lc="1">1.0</force>
    </rigid_body>
    Hope this helps.

    Cheers,

    Steve
    Department of Bioengineering, University of Utah
    Scientific Computing and Imaging institute, University of Utah

  3. #3
    Join Date
    Mar 2017
    Location
    Patra Greece
    Posts
    24

    Default

    Hi Steve,

    Thank you very much for your quick response and your answer!!

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •