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Hello everyone, Thank you for the help, and indeed "Pneumatic Conveying" has yelded some nice info, most notably the "Pneumatic Conveying Design Guide" from David Mills, which is filled with precious info. This "project" is not very serious at the moment and is linked to another application in...

Hello, I am looking for some guidelines regarding the engineering of a vacuum cleaner. I need to do a rough sizing of a system that ressembles a vacuum cleaner and I have some hurdles which i don't really have great answers for, mainly: -What vacuum is needed for X sized particles -The losses...

Hello, The outer part (N°1) has a pivot link as well as a circumferential displacement of 10°: The inner part is fixed on its central geometry: Thanks !

Hello, Thank you for the reply ! Yes, par 1 is rotating around a common center of part 1 & 2 that is the center of the internal and external radii of part 2. Ok to recover the contact forces but the problem I have is the projection of the contact force "orthoradialy". I've tried to generate...

Hello everyone, I am facing a problem that I have troubles resolving. I am doing a 2D contact simulation between 2 parts : Part 2 is constrained at the base. Part 1 has an imposed angle & also a pivot linkage relative to the center of rotation. Here is the end result: Now what I am trying...

That makes sense thank you for the confirmation. I am not ignoring the other frequencies. It's just that our customer changed his requirement and went from an 11Hz sine wave to the PSD attached and I wanted to better understand the difference at that particular frequency. It seemed to be a...

Hello everyone, Thank you for the explanations. I asked for the values table as well as the normalizing values. I got told the window size was 2048 points and the sampling frequency is 1024Hz, so that comes out as a Delta F of 0.5Hz which is what is indeed in the values they gave me. I am...

Hello everyone, I am having trouble with PSD curves, it's clearly not my cup of tea and maybe someone can help me on this. I have 2 different vibration cases that I'd like to compare, given as follows: 1- Acceleration 45m/s^2 / displacement 19mm / Frequency 11Hz -> To me this is a simple sine...