Finally I got time to mesh and solve my imaginary problem. I will not dive into meshing since it is a chapter on its own. I used a tetrahedron mesh as standard as it gets. The work flow is simple; get a CAD model, get material data, mesh it, add supports and loads and finally get some results, either by stresses or displacements.
My results for a small load of 1.2Kg shows that the T tube element will suffer most when we sit on it. I would say that if it breaks it will be there. Ok this case is more then evident since the only thing holding my weight is this connection.
My today’s train trip is being quite interesting. As someone sat on a seat it wobbled. It made me think “how much would it hold”. Well, I enjoyed the seat design with it’s tubular shape and table attached to it.
This made me think also. How would I model this?
I have a few inputs/assumptions I already can imagine:
Assuming a 120Kg (more or less 250 pounds) person
Isotropic behaviour structural steel
Perfect welding connections (I know I know but it’s just a rough analysis)
Maybe these boundary conditions, hold the seat in place. I will also assume only one seat is present instead of the hole bundle.
On my next post I will follow up on the model building.