×
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

Finding Equivalent Isotropic Properties for Composite Material

Finding Equivalent Isotropic Properties for Composite Material

Finding Equivalent Isotropic Properties for Composite Material

(OP)
Hi,
   I am trying to model a Carbon/Epoxy structure in a finite element software but the software does not have the capability to analyze composite materials at this point. So, I wanted to find the equivalent Young's modulus and Poissons ratio so that it can be treated as an isotropic material. Can anyone please help me out with this?

Thanks,
David   

RE: Finding Equivalent Isotropic Properties for Composite Material

Go to marinecomposites.com click on Eric Greene's book.  There is a great design section that covers all of this in a very easy manner.  There are many books for this.  You will probably find stuff all over.

Good Luck

RE: Finding Equivalent Isotropic Properties for Composite Material

David,

download this Laminator program which uses laminate theory to make smeared properties from lamina properties:

http://www.thelaminator.net/

Josh.

RE: Finding Equivalent Isotropic Properties for Composite Material

(OP)
Thank you guys! That helped.

Thanks again,
David

RE: Finding Equivalent Isotropic Properties for Composite Material

David,

This type of assumption is made often but make sure that you understand the errors associated with this simplified material model.  You could easily have an order of magnitude error in stiffnesses, stresses...  As with all analysis be sure to perform some real world testing.  Good luck.

Rob

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