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JStephen I believe that is the old definition, but you probably know that as you referenced the 9th ed. spec. I agree that is where it's coming from though. 150 ft-lb does seem reasonable.

I get what you're saying jgKRI, since accuracy would be low, but I would also argue that assuming 0 pre-load could be dangerous in certain situations.

I understand that the RCS specification defines snug tight as "the condition that exists when all of the plies in a connection have been pulled into firm contact by the bolts in the joint and all of the bolts in the joint have been tightened sufficiently to prevent the removal of the nuts...

Why are you inserting the shackle into the plate? Weld it to the top The bending stresses should be pretty straightforward. Max moment of PL/4 at the center for a simply supported beam? There is an axial load at the center of your weld group. The weld stress can be found by simply using P/A...

Can A193 Grade B7 anchor bolts be welded? They are tempered, so I believe they would lose some mechanical properties. Is there any acceptable weld method that could be used? Thanks

aren't free edges a function of geometry and not nodes though? If I have a free edge I thought it suggested my surface geometry is not connected and something needs to be changed there.

Ok, so I definitely have a free edge where two surfaces should be joining and I think it is due to a coincident curve that I can't get rid of. The curve is NonDeletable, because it is associated with the edge of the surface. I have merged all nodes to a tolerance of 0.016 with my mesh size in...

Thanks ThomasH! I know this is easy, but what are the steps I should take to check which nodes are connected to an element in FEMAP? As far as the coincident node merge tolerance I used the default value that FEMAP provided as I am not sure what a reasonable tolerance is.

Thank you for the comment karuchan! The first thing I did when I had this problem was check free edges and they were all in logical spots. None where I had my problem. I also ran the coincident merge check and I’m still having the same problem. I must have something uncommon going on here

By the way these surfaces were attached perfectly until I increased the loads in the model, then they separated.

Thanks RB1957. I deleted my orphan nodes of which I had 150. I remeshed the surfaces at the same time and tried to delete any coincident curves in the model, but got an error that coincident curves can’t be selected on a solid but I don’t have any solids in the model. Of course I ran the...

Ok, does anybody have any idea why my mesh is separating? all the surfaces were joined using a non-manifold add and the meshes seem to line up, but the plates are separating during analysis. What should I check for? also, is there a command for deleting all orphaned nodes in a model in FEMAP?

Embarrassingly I do not know how to check the properties of a surface

I have a background in solid works simulation, but nothing seems to work in FEMAP like it does in an in-CAD FEM. FEMAP seems archaic and really not user friendly, perhaps I just need to get used to it. I’ve watched some YouTube videos, but I have t found anything for my application, which is a...

What is the best resource for an engineer to teach themselves FEMAP? It seems like a lot to get started with without a set of tutorials, or textbook that are structured for beginners.

I've meshed the curve with "plot only elements". How do I check if the curve is associated with the two surfaces?

well.. the surface is split at the curve now, so I guess it is the edge of surface. My understanding was that FEMAP converted the force on the curve to nodal forces to nodes touching the curve. What extra steps should be taken to add a force to a curve?

I used Geometry>Curve from Surface>Project and then applied the load to the projected curve.

Is there a way to add a force along 2D plate elements in FEMAP on a single curve. I have projected a line on a surface and added a force to the curve that is in the same plane as the surface, but the model does not recognize the force and shows zero stress after running the analysis. What is the...

How cost prohibitive is wind tunnel testing? The couple tests I’ve seen have shown wind loads far under code. Perhaps a test would prove overturning loads aren’t much higher with the extra stories than what was originally designed for. Just an idea