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

spring rate thickness vs deflection

spring rate thickness vs deflection

spring rate thickness vs deflection

Dear All,

I have doubt in calculating the spring rate of rubber . I got formula for spring rate K= F/D = AE/t

Using the above mentioned formula I calculated the thickness and deflection of rubber . But I am not getting it right?

If anyone have a right formula to find the deflection and thickness of viton rubber please guide me to proceed in the right way.

It would be really grateful for me.

Thanks in advance.

with regards,


RE: spring rate thickness vs deflection

Rubber is a bit odd. Your equation will work for long thin rods of rubber in tension, but won't work for short fat blocks in compression between two flat faces. There are several books around called engineering with rubber or similar, they should have appropriate equations/graphs.


Greg Locock

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

RE: spring rate thickness vs deflection

There has been much information disseminated on elastomeric properties in engineering periodicals and engineering handbooks.

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


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