I intentionally left the details out because I am not looking for any advice or tips on the project but literature (books, papers, etc.) on LDPE and how to apply it in FEA.
As far as it being hard, yes I anticipate it being hard, but that is what makes it fun and rewarding.
I have a project where I am working with low density polyethylene. The project specifies a minimum amount of allowable permanent deflection under a predefined load.
Does anyone know of a good reference to educate myself on this material? Specificially yield criteria? I'll be using a FEA...
Turns out the root cause was too coarse of a mesh. I plotted only the intergraton points and the stresses were in line with the stress-strain curve. I refined the mesh and the stresses started to approach 248MPa.
In the original run, the nodal stresses and strains were off by as much as...
Thanks for the posts. HondaKnight1 your link to the formula for equivalent stain was especially helpful. I pulled some nodes from my model for max, min, mid and von mises stresses and strains (see below). Then applied the formula for stress and strain. The handcalcs matched pretty closely to...
I just completed a non-linear analysis. The following are the inputs for the material:
E=200GPa
v=0.27
Von Mises Criteria, Initial Yield 248MPa
Plasticity Modulus 500MPa
The output stress and strains do not match the bilinear stress strain curve. For example I am getting 400MPa of Von Mises...
