Evaluation of segmented active constrained layer damping treatments that include bonding layer strain energy

Peter F. Cento; Grzegorz Kawiecki

doi:10.1117/12.436488

21 August 2001 Evaluation of segmented active constrained layer damping treatments that include bonding layer strain energy

Peter F. Cento, Grzegorz Kawiecki

Author Affiliations +

Proceedings Volume 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures; (2001) https://doi.org/10.1117/12.436488
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

The primary objective of this study is to develop a more accurate research and design tool than those in the currently available literature for active constrained layer damping treatments applied in bending. A five layer beam finite element model is presented that includes bonding layer strain energy and extends current finite element models for Euler-Bernoulli beams with segmented active constrained layer damping treatments. Active constrained layer damping utilizes modern piezoelectric materials as the constraining layer for these types of damping treatments. Preliminary studies have confirmed that strains in the bonding layers can have a significant effect on damping ratios at the fundamental modal frequency, especially when relatively thin compliant piezo materials are used for constraining layers. Previous researchers that have developed three layer finite element models assumed perfect no-slip adhesion between adjacent surfaces of the beam, viscoelastic layer, and constraining layer. In certain instances this can contribute to reduced accuracy when predicting damping. The effectiveness of the finite element model is validated experimentally for both active and passive constraining layers. The damping is represented using an elastic displacement fields (ADF) to model the frequency dependent stiffness and damping properties in viscoelastic materials as developed by Lesieutre and Bianchini.

Citation Download Citation

Peter F. Cento and Grzegorz Kawiecki "Evaluation of segmented active constrained layer damping treatments that include bonding layer strain energy", Proc. SPIE 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures, (21 August 2001); https://doi.org/10.1117/12.436488

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available