quarter car cocncept and parameters

[vignesh6_1986]

Friends,
I am new to this forum. I needed some advise on how to solve a quarter car model.
C:\Documents and Settings\Administrator\Desktop/Image79.jpg
Can you people help me solve the governing equations to find out what are themain parameters that are important and how can their variance change the answers.
Thank you

[vignesh6_1986]

Friends,
I am new to this forum. I needed some advise on how to solve a quarter car model.
C:\Documents and Settings\Administrator\Desktop/Image79.jpg
Can you people help me solve the governing equations to find out what are themain parameters that are important and how can their variance change the answers.
Thank you

[vignesh6_1986]

the image is shown here (http://www.brlsi.org/proceed05/images/Image79.jpg)

[t21jj]

edit: I see you fixed the link

[The_Man]

Model it like:
m2 = Sprung Mass
m1 = Unsprung Mass
Ks = Spring rate
b = Damping coefficient
Kw = Wheel rate
u = Road surface input
x = displacement of unsprung mass
y = displacement of sprung mass

Draw FBD of both the masses and write the corresponding equation.

m1 x'' + c (x'-y') + Ks (x-y) + Kw x = Kw u

m2 y'' + c (y'-x') + Ks (y-x) = 0

You can get Matlab to do x & y for different u.

[The_Man]

It takes forever for posts with links to show up and causes embarrassment like this :P something must be done about this.

I'm sure there is an other way to regulate spam. Or maybe have more moderators, so frequency of posts showing up is higher.

[t21jj]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by The_Man:
It takes forever for posts with links to show up and causes embarrassment like this :P something must be done about this.

I'm sure there is an other way to regulate spam. Or maybe have more moderators, so frequency of posts showing up is higher. </div></BLOCKQUOTE>

Quoted for truth.

I find it works best under the current system to post a "placeholder" post stating that a post with a photo or link has been submitted pending approval.