Jump to content
imalik

Constraints and BC in HM

Recommended Posts

Dear all,

 

I am a newbie in HW as well as HM and aim to setup a component and then perform the analysis with Optistruct. I have defined my BCs and constraints using RBE2 elements but face some issues. (HM model and image with BCs attached)

 

  1. I am not sure about how to define a displacement BC or Constraint on one of the holes (left end in the attached image).  Aim is to constraint the sideway motion (x-axis) of the component to max of 2mm. I created a constraint load collector with load type SPCD and activated dof1 with a value of 2mm. Is this the correct way to implement the desired constraint? 
  2. Secondly, I created  linear static loadcases with option Load for my load collectors FRONT, CENTER, REAR and SPCD.  Is it required to create a separate loadcase for Symmetry BC as well?

  3. I assume a (geom. non-linear) dynamic implicit type load step will be better to use in this case. But I am unsure which sub-option I have to use in that case.

 

Some suggestions and recommendatiosn woudl be really helpful.

I.

Loads&BC.jpg

Shaft.hm

Share this post


Link to post
Share on other sites
Guest
13 hours ago, imalik said:

I am not sure about how to define a displacement BC or Constraint on one of the holes (left end in the attached image).  Aim is to constraint the sideway motion (x-axis) of the component to max of 2mm. I created a constraint load collector with load type SPCD and activated dof1 with a value of 2mm. Is this the correct way to implement the desired constraint? 

 

I think for this you need to optimize the model such that the displacement is restricted to 2mm. 

 

I see you have an SPCD and forces coming on to the node which is not correct. 

 

Also, I dont see any SPCs refered in load cases. Is there a reason for that?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
You are posting as a guest. If you have an account, please sign in.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...