Von Mises stress

[Anonymous]

Hi, I'm developing my final university project. 

The simulation comes a pointed concentration of Von Mises Stress very high, and I don´t know why.

¿ Could anyone say me explain me?.

Thank you.

[Anonymous]

It's very hard to tell what's happening from the images you attached.  My guess is that your concentration is a consequence of your mesh, not a physical stress concentration.  Low mesh density in corners commonly create unrealistic stress concentrations.  Look into mesh refinement techniques to prevent this; try to avoid over-meshing the entire domain while increasing the mesh density in the region of the non-physical results.

Good luck.

[Anonymous]

Hot spots are not uncommon in FEA results. The reasons are usually due to poor meshing, wrong choice of mesh element, wrong loads, or incompatible material properties.

Since your attachment didn't show meshing, I cannot tell if it is a meshing problem.

Inventor is really not a dedicated FEA software, hence you do not have much power to optimize the mesh and the contacts. If you have access to other FEA software (like Ansys) in your lab, maybe you should try that.

If Inventor is the only option, and if the high stress is concentrated at one node, you may want to explain the high stress area as "singularity" - search Google for the term and gain more insights into FE method.