Recent content by Maxham1

Having worked in the industry for a few decades now, I'd go with simply "electronic packaging" and drop the limiting word "design."

Have you tried refining the mesh in and around the strip? If that helps, then continue to refine the mesh until the results don't change, indicating that you have mesh independence - just an idea that you may have already tried. Dave

I've been getting some experience using Solidworks Simulation with Random Vibration, but I am now faced with an analysis that requires sine on random vibration. How do I enter this kind of information as the excitation in Simulation? Do I need to add spikes that represent the discrete...

From the little that I remember from my finite-difference studies, the local heat transfer coefficient is determined by considering it's definition (h=q*A*DELTAT) and equating that definition to the conduction occuring at the same surface as where the heat-transfer coefficient is desired. That...

We looking to encapsulate our transformers with windings around their E shaped cores. Is there a source that can help us a vacuum chamber that we can use when encapsulating the transformers? Each transformer is about 8 in X 8 in X 6 in in size. Basically when we're done with the encasulant...

This may be too much brute force, but could you make them one part?

Greg, I just wanted to make sure we're talking about the same thing when it comes to contacts. I'm talking about contact sets, that is, defining that two surfaces are bonded. I'm having a hard time understanding why Solidworks Simulation wouldn't allow for the analysis of two (or more) pieces...

Really? Is Rotron going out of business?

Wow, that's an eye opener - thanks! How does one do a vibration analysis of an assembly where many of the parts are in contact - just turn off all contact sets?

I was also thinking that maybe it's trying to write out to memory. Most of my computational background is in CFD, but I've done some FEA mostly static analysis, which runs fine. I'm wondering if it's got to do with contact definitions or the lack thereof. I'm also looking for any resources...

I've been working on a random vibration model that has the following: #Nodes = 37K, #Elements = 17K, DOF=158K It's a model of a power supply and the problem is that the solution takes DAYS to solve. There are 116 resonant frequences. If I just try to solve the random vibration with just...

thanks for the addtional info - it's very helpful. I bought the A666 spec from ASTM ($37) and have selected 1/4 hard, which give us a yield strength of 75 ksi and ultimate of 125.

Thanks for the helpful info Mike and Ed - much appreciated! For those interested, here's a little background on the situation: The part is a band about 2 inches long with an ID of 4 inches and OD of 4.2 inchs (both dims are nominal). We will be making circumferential grooves in the band's outer...

We're looking into using a higher grade of 304 stainless steel tubing than the standard grade. My question is about the 1/8 hard, 1/4 hard, etc. grades. They have the desired yeild strength (60-75 ksi) but is the yield strength constant, or consistent throughout the thickness or is the...

I would suggest considering an antifoaming agent be used to reduce the amount of air bubbles. You can find more information at www.emersoncumming.com. Take a look at their technical tips section, http://www.emersoncuming.com/generic.asp?cat_id=4&sub_cat_id=6&region_id=1