T-Joint intersection stress
T-Joint intersection stress
(OP)
Hi,
I'm fairly new to FEA and I'm trying to simulate pressurised tube T-Joint.
I'm getting significant stress at the inner intersection. I tried increasing the fillet radius, adding reinforcement and ribs, but the stress at that point is not reduced.
[image]
Can I interpret that the part will fail because of the big stress value at that point even though there's a lot of unstressed material behind it?
Thanks.
I'm fairly new to FEA and I'm trying to simulate pressurised tube T-Joint.
I'm getting significant stress at the inner intersection. I tried increasing the fillet radius, adding reinforcement and ribs, but the stress at that point is not reduced.
[image]
Can I interpret that the part will fail because of the big stress value at that point even though there's a lot of unstressed material behind it?
Thanks.





RE: T-Joint intersection stress
RE: T-Joint intersection stress
What Code/Standard are you designing to?
RE: T-Joint intersection stress
In general the results seem odd in that the stress distribution for this T joint should be symmetric about the vertical tube centreline (with only a pressure load) and yet there is a peak stress at only one side. All the other stresses appear to show this symmetry. Unless there's additional loads causing bending at one side, the results don't appear to be plausible. Check the model to make sure everything is connected up and there are no gaps where the ribs connect.
If the loading is purely pressure loads then use quarter symmetry of the joint and then you can put in more elements for the same run-time.
RE: T-Joint intersection stress
i am seeing the image u sended and from my opinion in T-joint the pressure is to be equally distributed in all direction and when you reinforcing the ribs its thickness is too less for bearing the pressure thus you can either safe it by increasing the width of rib or u can increase the diameter of base pipe if possible.