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!

*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.

Jobs

Polymer materials - what is the relationship between (stress) frequency and damping?

Polymer materials - what is the relationship between (stress) frequency and damping?

Polymer materials - what is the relationship between (stress) frequency and damping?

(OP)
thread334-339176: Viscoelastic material for damping high frequencies?

This is my first post here after a days-long search on the net for information on this issue. Material science is not my specialisation, so I am very much at the mercy of your goodwill. Thanks in advance.

From the above post the following point was made:

Quote (At higher frequencies materials behave more stiffly and elastically. So, you need to use a material with very low glass transition temperature (Tg))


Taking that as two separate statements, would someone be able to explain, in simple terms, what it is about the nature of 'materials' (and I assume that in context that means all polymers?) that gives them different mechanical properties such as enhanced stiffness at raising frequencies, for example, 100Hz and 10kHz. What exactly is the relationship between elasticity, stiffness, damping (Td) and frequency for a given material, is that relationship unique to polymers, and indeed all polymers?

Thanks.


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


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