Traction analysys

[Anonymous]

Hi Everyone!

I'm developing a new design of an article with same geometry, but I'm going to change the material.

I'm using Foundry GGG-60, with this propierties (photo one).

The piece is joined at the top with a screwed Photo 1join. Then, the forces are applied in the holes of diameter  33 mm.

I don't understand why this piece can pass the stress test with normal steel (how is designed right now) and not with foundry GGG-60.

With steel, we can see that max MPa is 640 Mpa, more or less, but the properties are worse that this exigence. But in real life, this model, once is proved, works well.

I don't know what I'm doing wrong.

Thx!

[TheCADWhisperer]

Can you File>Export and then Attach the *.f3d file here?

[Anonymous]

Stress concentrations do not normally lead to catastrophic failure in low cycle load cases but lots of things can be going on here. I'm still not sure what you're asking, but if you are saying the actual part passes, but the fea shows it doesnt....then a lot of variables come into play.

As mentioned...please attach a link to the file.

Edit: have you gotten convergence on this simulation?