Composite Beam Buckling analysis of two ends simple supported

- March 22, 2019 at 2:45 pm
  
  James02dai
  Subscriber
  
  I am doing a composite beam buckling analysis on Ansys. I had difficulties on creating boundary conditions in the two ends of beam. The beam is supported by using simple support. I created the composite beam by shell element. But in the static analysis, I can not apply a simple support on the end. Does anyone know how to solve this issue? Thanks in advance.
- March 22, 2019 at 3:37 pm
  
  jj77
  Subscriber
  
  If you can put an inline image to show a bit more details of the structure and what BC you need then it is easier to help.
  
  If I can guess choose a remote displacement on the edges, where the BC needs to be and fix only the translational dof.
  
  See this video where they apply a remote force which is similar in the way it is applied (you still need the remote displ.)
  
  https://www.simutechgroup.com/tips-and-tricks/fea-videos/350-ansys-workbench-tips-tricks-pipe-loading
- March 23, 2019 at 11:03 am
  
  James02dai
  Subscriber
  
  Hi, jj77, Here is the model that I want to model. In the pic, it is a round beam. I want to create a I beam. The boundary condition is show as the pic. I had know idea how to get this for composite beam. As the beam I created is in shell element. I would like to know more on this if you could tell me more. Thanks.
- March 23, 2019 at 2:54 pm
  
  peteroznewman
  Subscriber
  
  Use the site Search feature to look for Pinned in the Structural Mechanics category and you will find several discussions on this topic.
  
  I agree with jj77 to use Remote Displacements.
- May 16, 2019 at 2:14 am
  
  James02dai
  Subscriber
  
  Hi,for composite material, how to get deformed shaped in linear buckling for non-linear analysis? In workbench 19.1, the shape can be directly transferred by linking the solution to the non-linear analysis model(static analysis), but this method does not work for composite material. Can anyone give me an idea? Thanks.
- May 16, 2019 at 5:48 am
  
  jj77
  Subscriber
  
  If it does not work create the imperfection (in cad) as in your image but with a very slight bow something that could be observed in reality.
  
  Some building codes will advice on the size and shape of column imperfection
  
  https://advantage.graitec.com/en-US/knowledgebase/article-details/?code=KA-03157