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Hello. I am working on some FEA for plates with a radius in the middle. Please see the attachment. I am wondering if anyone has any opinion on whether or not my contraints are correct. I am fixing the model on one face, applying a load to the opposite face and constraining the bottom face in...

I am using the Fastened Connection Property in CATIA GSA in my FEM but the max stress is shifted and it occurs in line with the load at the edge of the hole unstead of at the sides of the hole. The max stress looks to be shifted 90 degrees to where it should be located but the value appears to...

Thanks. I did some reference and I think it is related to the mesh size. I belive the mesh is too coarse. I'm using 10-node parabolic tet elements. I'll try to make the mesh finer and see if that gets me closer to the correct value.

Thanks. I'll keep playing with the contact and constraint properties in the models. I'm aware of the effect of the fit condtions on Kts. However, I am wanting to model these fasteners/joints in the FEM/FEA software to develop these factors for comparison to know values. Some of the models I...

Hello. I have run some models in CATIA and I am getting stress values that are slightly lower than expected. I am getting about 3.8 ksi for the stress at an open hole and the value should be about 4.7 ksi based on the geometry and loading conditions. I confirmed this in ABAQUS and Peteron. I...

I am trying to get the stresses at the hole to calculate stress concentration factors. These factors will end up being used in a fatigue analysis. My question is really on what connection properties to use the in CATIA Generative Structural Analysis module that will simulate the effect the...

Hello. I am running some FEA analysis in Catia using the GSA module of a rivet installed through two plates. I believe I am getting the correct stress value from my model for the large plate. But the secondary plate and rivet show 0 stresses. I am wondering if anyone thinks this is correct...

Hello. I am running some FEA analysis in Catia using the GSA module of a rivet installed through two plates. I believe I am getting the correct stress value from my model for the large plate. But the secondary plate and rivet show 0 stresses. I am wondering if anyone thinks this is correct...

My question was actually related to fatigue. We consider pin loads in our fatigue analysis so I was wondering if you have a fastener/pin load on the nut plate joint do you consider any of that load going to the NP small hole rivets or do you just assume the large hole bolt carries all of the...

Hello. I have a general question about how to account for fastener/pin loads applied to nut plates. Is it correct to assume that the large hole nut plate fasteners take all of the pin load and that the small hole nut plate rivets do not take any of the pin load? I realize it is conservative...