×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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.

Students Click Here

Effect of thickness on Dielectric Elastomer

Effect of thickness on Dielectric Elastomer

Effect of thickness on Dielectric Elastomer

(OP)
Hello,

Does the thickness fo the membrane have ay effect on the natural frequency produced without applying volatge. That is at 0kV applied to a dielectric elastomer membrane, does a change in thickness of the membrane affect the natural frequency produced? Immediate assistance needed!!!

RE: Effect of thickness on Dielectric Elastomer

As the name suggests natural frequency is natural. It depends on the mass and stiffness of the component. Formula to calculate natural frequency is ω=√(k/m). So natural frequency is directly proportional to square root of stiffness (geometric characteristics such as thickness, length, breadth and width etc, stiffness change due to loading) and inversely proportional to square root of mass.

So if you go on increasing the thickness of membrane, the natural frequency is going to increase in proportion of square root of thickness. If there is decrease in thickness then there will be similar decrease in proportion of square root of thickness.

Pre-stretch can increase natural frequency since the stiffness due to stretching is increased (by pre-stretching membrane the looseness of membrane vanishes and membrane becomes stiffer and can marginally take in-plane load than loose membrane) although thickness is reduced. So any change in stiffness due to geometric or load conditions, the natural frequency of components can be altered.

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


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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