Using Wk-weight for Body Acceleration PSD (ISO 2631-1)

[Humaidi Zulkifli]

Hey there everyone,

I'm conducting a car suspension simulation using MSC ADAMS to assess the vehicle's ride comfort. I've successfully plotted the car body acceleration PSD, but I'm aiming to factor in human considerations following ISO 2631-1 standard. I'll be using the W[sub]k[/sub] weighting for this case.
The question at hand is: How can I plot the weighted PSD in MSC ADAMS? If not feasible in that software, is it achievable using other programs such as Excel?

I'd appreciate any tips or guidance on how to plot the weighted PSD in this scenario.

Thanks!

 

[GregLocock]

Someone who is very cluey with the post processor might be able to build a weighted psd, but I am not that person. I used to do most postprocessing in Altair Hypergraph, or Matlab/Octave. The big issue I believe is reading res rsp or req files into something that Excel or matlab can read.

https://au.mathworks.com/matlabcentral/fileexchange/57913-adams-car-result-file-res-reader

would help - I haven't used it.

I'd add, how on Earth did you model the seats?




Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[GregLocock]

As of 2023.2
Adams Solver Export to .mat: The Adams solver can now directly generate ,mat file from an execution

https://simcompanion.hexagon.com/customers/s/article/Whats-New-Adams-2023-2

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[Humaidi Zulkifli]

Hey Greg, appreciate your help. I'm using ADAMS/Views for simulation and I managed to export the PSD result to Excel as well as obtained the weighted PSD. Right now, I'm working on replicating the same outcome using MATLAB with the .res reader.

Also, I'm modelling a simple 2-degree-of-freedom lumped mass model, excluding the seats. In my upcoming plans., I'm considering modeling a double wishbone suspension.

 

[GregLocock]

Sounds good. Your whole body vibration won't mean much without a seat.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?