SolidWorks Simulation- PSD Units in Random Vibration

Learn about Power Spectral Density (PSD) units that can be used for input to a Random Vibration Study in the Linear Dynamics module of SolidWorks Simulation. Where on earth did those units of G^2/Hz come from, and what do they mean? This will be discussed during this video.
QuickTips video presented by Tony Botting of GoEngineer (www.goengineer.com).

[@trungnghiale8286]

You are legend. it took me hours to search, read a tons of documents about PSD and still don't understand anything but you did it within 4 minutes. Thank a lottt !!

[@goengineer]

Glad it was helpful!

[@jimandrews6251]

omg sooooo

[@honghaduong7752]

i was struggle in understanding the meaning of this PSD unit, thank you a lot for great explanation.

[@goengineer]

We love helping others! Thanks for your comment.

[@orasion]

Good job Tony, as always your videos are concise and precise.

[@brittohalloran]

Excellent explanation of random input vibration testing

[@ronaldp4]

very nice Tony; explanation of FEA inputs are great tutorials. Ronald Plummer

[@jpscientist]

Hey, first of all, great tutorial. Second, what criteria did you use when you split the frecuencies in those ranges for the GRMS's (PSD) calculations? I mean, is there a special criteria or you just use three equally spaced ranges? Thanks!

[@stbny4444]

how do you interpret the results? I use ansys and if i use a displacement plot it will give me just a single output plot with displacements and probability value. I would imagine if i give it a spectrum input i should get a spectrum output but this is not the case and it's not clear what the results mean.

[@jpscientist]

Thanks a lot, folk! The Solid Works Dynamics Training Manual doesn't explain a lot.

[@science_engineering]

if an input signal is assumed to be gaussian, than PSD have to be flat!)