Hello,
I am a stress analyst working in the aerospace field. I am trying to recreate an old FEA using an input deck from the early 1990s, but am unfamiliar with the language. NASTRAN is the solver I use daily. I can't share the actual file, but below is an example of the deck with random values...
Hello, it might seem like a dumb question, but how would I extract shell forces from my FE Model? I have a model made up of many 2D Shell Elements and have gridpoint forces and element forces output. I know that the shell forces are really running loads (or membrane forces). And I can extract...
Hi all,
I normally work in Hypermesh, but have recently been required to use some tool that only works with Patran. I have a large model with many different properties and when I import my Hypermesh BDF into Patran I lose all the property names. They come in along the lines of "Pcomp.1" or...
Hi,
I'm trying to calculate the bending moment/stress in a bolt in double shear with a gap between the plates. I know there are much more realistic ways to do this, like assuming that the clevis (two outer plates) create bearing/contact stresses, the use of semiempirical formulas, or methods...
Hi, I'm trying to understand the use of CBUSH elements with PBUSH properties for grounded constraints on a model. Normally I'd use displacement constraints in the 6 DOFs to constrain my model, but I recently came across "grounded bush" elements. In Hypermesh, these elements are classified as 1D...
Hi all,
Does Patran have any defeaturing capabilities that would allow me to remove fillets/chamfers, or am I limited to doing this in another software, like Catia? I can’t seem to find anything. Other FEA software like FEMAP have this feature, and additional powerful solid defeaturing...
Hello, I’m not sure if this is allowed, or belongs here, but I was hoping to get some insight on where I should be salary wise. Please remove if not allowed.
I’m currently in the talks with my boss about receiving a salary increase. Thing is, I joined my company two years ago and this will be...
Hello,
I'm trying to size this frame, which is essentially a beam fixed/pinned on either end and loaded externally. The FEM is basically a global model (other components not shown) used to distribute loads and isn't used for stresses due to its coarseness. What I have below is the frame...
Hello, I'm trying to understand how to size a structure using the loads (shell forces?) that flow through a structure. I've created a very simple representation (essentially a beam) of the actual structure (aircraft intercostal or keel beam). I know I could determine the distribution of loads...
Hello,
I am new to Ansys ACP and am trying to set the element normals of a box spar using an oriented selection set. I'd like the normal direction of the top surface to point in the positive z of the rosette, and the bottom surface to point in the negative z of the rosette (so the part is being...
Hello,
I'm trying to size a tension clip, but am confusing myself and fear this problem is simpler than I'm making it out to be. I have a tee shaped tension clip, and have distributed an external loading into the two fasteners. Now, my problem is that because of some asymmetricities in the...
How can I determine the thickness of a bolt plate, given the forces shown applied at the lug hole? I am fully aware of how to distribute the loads into each fastener, but then what? I know that the applied forces create (Mx, My, and Mz) moments as well as shear at the bolt group c.g. How can I...
