Yes the pump meeting the total flow needs makes sense to me. How do I know if the pump is going to overcome the system pressure drop? I've seen things like 'supply pressure' or 'forward operating pressure' specified on chiller datasheets, do I need to make sure that supply pressure is greater...
Hi all,
I've started working recently in a new job as an engineer in a lab with a bunch of physicists. A job they've given me is to size a water/glycol chiller (and basically design the hydraulic system i.e. fittings, tubing etc) to cool a bunch of equipment they've got in a few insulated...
That is a very good idea, thank you for the suggestion.
Let's say the pins have an interference fit with the disc. But the holes on the plate are slightly larger so there is a very close location clearance fit. I take the disc with the installed pins and slide it onto the plate: it is "hanging"...
Understood, thanks.
The pins will be used to make sure the disc is in the correct position when it is installed onto the plate. After that, it would be the bolt friction securing the disc.
Hi all,
I have some detailed design work coming up designing bolted/pinned interfaces, so I’m doing some examples trying to remember what I learned at uni. I would like to calculate the stresses in bolts and pins of a hypothetical mechanical assembly, but I have a question before I get started...
Thank you both for your answers, but I realize now that I was not clear at all in my original post.
Let me restate the question: "If I wanted to run multiple FEA on the same geometry/part (i.e. static, modal) should I alter the mesh from one analysis type to the next?"
After reading your...
Hi all,
Sorry of this is a silly question but it is one that recently came to mind and I cannot seem to find an answer to it: "should I change my mesh depending on the type of FEA analysis I am doing?"
My feeling is that I should not change it, but that is a total guess on my part.
Any...
Okay I did this, kept the internal fillets and got rid of the external ones. Did the first run using three elements around each fillet (0.8mm element size), and the second run with half-sized elements (0.4mm element size). Data is tabulated.
Deformation (µm)
Stress (MPa)
First run 0.8mm...
Yes I’ve not had very much success using the convergence tools in ANSYS, and have been remeshing manually.
I’ve created a model of a gusseted bracket, screenshot below.
I did a bunch of runs and plotted stress and deformation, below.
Note that the deformation here is in microns, so the...
Taking this into account, I reran the model again using the 6.25mm elements but I've excluded the elements closest to the fixed-end from the solution, shown in the below screenshot.
The maximum stress now is 189.4 MPa, pretty close to the calculated of 192 MPa. For this specific analysis...
Hi all,
I’m trying to get a better understanding of ANSYS as I don’t have a lot of experience with it. My question is with respect to a static structural analysis of a solid part: “how can I be reasonably confident that FEA is giving me reasonably accurate stress values?”
I’ll analyse a...