×
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

Viscoelasticity

Viscoelasticity

Viscoelasticity

(OP)
Hi guys,
I am trying to model the viscoelastic behaviour of a tested material. In Abaqus, I used Prony under time domain to assign viscoelastic properties. When I tested it with two different loading rates, I didn't see much change from force-deflection curve. My question is if this is due to the fact that I used time domain, not frequency domain? I thought either time or frequency domain is just a way to assign viscoelasticity, and therefore, the material should behave rate-dependent anyway (as one of viscoelastic natures). Am I right?

Many thanks,
Michael

RE: Viscoelasticity

Time domain should work. Either you put incorrect viscoelastic properties (wrong relaxation time or moduli) that don't cause significant viscoelasticity or you did a static analysis. You should do a quasi-static (VISCO) or dynamic time domain analysis.

Nagi Elabbasi
Veryst Engineering

RE: Viscoelasticity

(OP)
Thanks, Nagi. I think I made a mistake using the static analysis. Thanks very much for your help.

Michael

RE: Viscoelasticity

HELLO
please how can i calculate the prony parameters for viscoelastic material
thanks a lot

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