Penguineer
Mechanical
Hello All,
In my quest to determine the most appropriate method of static weld analysis with FEA I have come across at least a half dozen methods. All of these seem to have their own merits but I can rarely make them agree with each other, or even the hand calculations. To the point: I wanted to try sub-modeling the (fillet) weld joint and splitting the surface through the throat plane. From there I figure I could measure maximum shear stress and compare against distortion energy theory (Sys = 0.58*Sy), which for an E70 weld is 33,640 psi.
My rationale behind this is that a weld always fails in shear and the failure would occur at the throat. Furthermore, the hand calculations seek to determine the resultant stress in the throat and either compare them to an AISC/AWS allowable or compare them to an upper stress limit, depending on whether you're reviewing the weld as a line or as the throat area. I figure the focus of all of this is to see the load passing through the throat of the weld and to weigh that against the appropriate stress limit, so this FEA approach might be reasonable.
Has anyone tried anything similar to this and could comment on the method? I would like to hear your feedback on this or perhaps another method that you prefer.
Thank you.
In my quest to determine the most appropriate method of static weld analysis with FEA I have come across at least a half dozen methods. All of these seem to have their own merits but I can rarely make them agree with each other, or even the hand calculations. To the point: I wanted to try sub-modeling the (fillet) weld joint and splitting the surface through the throat plane. From there I figure I could measure maximum shear stress and compare against distortion energy theory (Sys = 0.58*Sy), which for an E70 weld is 33,640 psi.
My rationale behind this is that a weld always fails in shear and the failure would occur at the throat. Furthermore, the hand calculations seek to determine the resultant stress in the throat and either compare them to an AISC/AWS allowable or compare them to an upper stress limit, depending on whether you're reviewing the weld as a line or as the throat area. I figure the focus of all of this is to see the load passing through the throat of the weld and to weigh that against the appropriate stress limit, so this FEA approach might be reasonable.
Has anyone tried anything similar to this and could comment on the method? I would like to hear your feedback on this or perhaps another method that you prefer.
Thank you.