I'm having a strange issue where I can't select any boundary condition for my PSD G acceleration load in a random vibration study. I have the prerequisite modal analysis linked properly, with fixed boundary conditions defined therein, but the PSD G acceleration definition doesn't list them, nor...
Suppose I have a FEM with two bodies. One body represents the washer underneath a bolt head; it is circular and small relative to the other body, which is a large, thick, flat plate. The washer is bonded to the plate in a circular region with compatible meshes. The edge of the bonded contact is...
Hi all,
I have tasks to analyze some mechanical assemblies which include circuit cards (PCB / PCA / CCA whichever terminology you prefer) under particular load conditions. For the purposes of this discussion, let's stick with common FR-4.
What are the recommended best practices for mechanical...
Hello all,
A friend of mine had two (out of twenty) OEM wheel studs shear off. One sheared while installing wheels and the other sheared while taking the wheels off (about a week later). Both stud failures occurred while tightening or loosening the lug nuts (also OEM).
Being curious, I...
Hi everyone, I'm looking at becoming an ASME member, but I want to make sure I understand what's offered before I drop the quid.
I basically just want access to the ASME journals with no per-article fees or anything. As an ASME member, is that possible? Or do you still have to buy articles even...
I am working a design that has jack screws - basically a grooved screw with an E-clip retaining ring for captive purposes. The design will undergo pyro shock and random vibe, so there is some worry that the E-clip will vibrate out of the groove on the screw.
Has anyone experienced E-clips...
Hi all, I'm trying to conduct a thermal analysis of an FPGA on a PCA. According to the data sheet the FPGA can be roughly modeled as a two-resistor network, with one resistor being the IC-junction to case thermal resistance and the other resistor being the IC-junction to board thermal...
Hi all, I'm trying to conduct a thermal analysis of an FPGA on a PCA. According to the data sheet the FPGA can be roughly modeled as a two-resistor network, with one resistor being the IC-junction to case thermal resistance and the other resistor being the IC-junction to board thermal...
