×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

The position of the center of mass - mass + stiffness matrices

The position of the center of mass - mass + stiffness matrices

The position of the center of mass - mass + stiffness matrices

(OP)
In "Flexible Mulibody Dynamics" by Geradin and Cardona it's written that one can compute the position of the center of mass from the stiffness and mass matrices of the element. Is it realy possible? I couldn't find any information about this technics.

Does anybody have some information about it?

RE: The position of the center of mass - mass + stiffness matrices

no response... maybe try mechanical acoustics/vibration forum

=====================================
Eng-tips forums: The best place on the web for engineering discussions.

RE: The position of the center of mass - mass + stiffness matrices

The K and M matrix can be solved to provide estimates of the eigenvalues and eigenfrequencies of the real system. Ideally this would correlate with the measured modal response of the real system, and as this paper shows the modal results can be used to estimate the inertial properties of the system

http://inderscience.metapress.com/app/home/contribution.asp?referrer=parent&backto=issue,3,6;journal,9,15;linkingpublicationresults,1:110896,1

So in a roundabout way, yes I agree it is possible.

But I do not know how to do it.



 

Cheers

Greg Locock

I rarely exceed 1.79 x 10^12 furlongs per fortnight

RE: The position of the center of mass - mass + stiffness matrices

(OP)
GregLocock,

Thank you for your answer! Unfortunately, I don't have access to this article. If it's possible and allowed could you share this paper with me?

RE: The position of the center of mass - mass + stiffness matrices

I'd have to pay for it just like you would.

Cheers

Greg Locock

I rarely exceed 1.79 x 10^12 furlongs per fortnight

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!


Resources