Is it possible to have a mixed mesh with plane elements(plane stress/strain) and bernoulli beams?For example if we have a CST element connecting with a beam at one node.In that case,in this node beam will have only axial displacements?(cause lateral displacements aquire C1 continuity and CST offers C0)Is that possible?
Hi,
you can mix different dimensionality. Nevertheles, you need to somehow find out how to map corresponding degrees of freedom. In commercial softwares using different tie links or connectors could do the job for you.
If beam finite element have common node with CST element, them will be connected with "hinge". If in beam element another node is free, it will rotate freely around this "hinge". This is rather intuitive explanation and continuity of FE have nothing to do.
There are some techniques in commercial codes which enable user to "smear" connectivity region and moment could be transfered from beam to stress state in plane stress region.
Spyros: Let’s talk about plane stress and Bernoulli beam. We use numerical techniques to simulate physical reality. So you will have to decide what is the reality in this case. You have a wall and one end of a beam is supported by the wall. If you want the beam to transfer moment to the wall, you will need to embed the beam into the wall. The amount of embedment will affect the stresses. So even if the 2d finite element had in-plane rotational dof, I would still recommend embedding beam inside 2d mesh.
- Badges
- Science topic
- Similar topics
- Biological Science
- Physiology
- Physiological Processes
- Stress