×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

vibration analysis of a co simulation controlled vehicle in adams/car

vibration analysis of a co simulation controlled vehicle in adams/car

vibration analysis of a co simulation controlled vehicle in adams/car

(OP)
hi

i'm new to this site and don't know how it works and this is my first question here

I have co-simulated and controlled a full vehicle model in adams/car with matlab/Simulink

how can I get the vibration analysis of the co-simulated model ( with the results of the co simulated model )

when I import the results from matlab into adams/car , I can't perform the vibration analysis of the new results ( controlled vehicle in matlab/Simulink )

for vibration analysis and eigen values for natural frequencies for the full car model itself in adams/car , you just need the script of the test that it has been used in , but when I use controls and add a force for example , to my model , then co-simulate it in matlab , I can't run vibration analysis of the controlled model that I have imported the results into adams/car . would someone please guide me how I can do this ???

appreciate it if you give me a good answer i'm in a pinch

thank you

RE: vibration analysis of a co simulation controlled vehicle in adams/car

eigen values etc only have meaning for a linear system. So you need to describe what you actually want as outputs, as you won't get a modal analysis to run.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: vibration analysis of a co simulation controlled vehicle in adams/car

(OP)
Hi Greglocock

Thanks for giving an answer so soon .

My problem is that , I can easily do the vibration analysis of the vehicle itself after the test but when I import the results file that is made out of the co-simulation of the MATLAB and Adams/car , I can't do the same vibration analysis because there's no script file for it ( for the controlled or co-simulated model ) …

how can I do the same vibration analysis for the controlled vehicle that is co-simulated in Matlab and then imported it's results into Adams/car ???

These are my main questions …

thank you again

RE: vibration analysis of a co simulation controlled vehicle in adams/car

Sorry, I don't use Car and I don't use a script for any vibration analysis. What i do is attach sensors (requests) and analyse the acceleration data in the req files.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: vibration analysis of a co simulation controlled vehicle in adams/car

(OP)
would you please elaborate on that ?

how can I do what you do and do the vibration analysis your way ? by the req files I mean …

RE: vibration analysis of a co simulation controlled vehicle in adams/car

Since I don't actually know what you are trying to do that is a bit tricky.

I attach a bunch of sensors that look like this,

REQ/51091,ACC,I=10409,J=5309,C=LEFT FRONT SPINDLE ACCEL

Then I run the vehicle over the road of interest

Then I use matlab to turn the req file into something a bit more readable, and extract the acceleration signals. Then I do whatever signal analysis is appropriate.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close