×
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

can stiffness be written as a function of Thickness

can stiffness be written as a function of Thickness

can stiffness be written as a function of Thickness

(OP)
Guys, How can stiffness be written as a function of Thickness
               K = A0 + A1 * T + A2 * T^3
Any ideas, my brain is not working

RE: can stiffness be written as a function of Thickness

Stiffness is a function of applied load and deflection. You might be able to argue that if the thickness is great enough then the deflection will go to zero, giving a rigid structure.

Depending on your loading you may be able to define the deflection then calculate an equivalent stifness.. E.g. deflection at the centre of a simply supported beam with a point load @ centre is:

s=Wl^3/48EI

k=W/s

Simplify and let your height 'h' in the second moment of area equal the thickness, 't'.

k=4Ebt^3/l^3

This is stiffness as a function of thickness and is also the formula for the stiffness of a single layer leaf spring (i.e. simply supported beam, loaded at the centre).

So in answer to your question there is no general rule but it would depend on the structure and your method of loading.

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