Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Characterization of complex modulus of viscoelastic materials subject to static compression
Autore:
Lee, JH; Kim, KJ;
Indirizzi:
Dept Mech Engn, Ctr Noise & Vibrat Control, Taejon 305701, South Korea Dept Mech Engn Taejon South Korea 305701 rol, Taejon 305701, South Korea
Titolo Testata:
MECHANICS OF TIME-DEPENDENT MATERIALS
fascicolo: 3, volume: 5, anno: 2001,
pagine: 255 - 271
SICI:
1385-2000(2001)5:3<255:COCMOV>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
BEHAVIOR;
Keywords:
complex modulus; frequency; incompressible viscoelastic material; pre-strain effects; static compression;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, JH Dept Mech Engn, Ctr Noise & Vibrat Control, KAIST Sci Town, Taejon305701,South Korea Dept Mech Engn KAIST Sci Town Taejon South Korea 305701 uth Korea
Citazione:
J.H. Lee e K.J. Kim, "Characterization of complex modulus of viscoelastic materials subject to static compression", MEC T-DEP M, 5(3), 2001, pp. 255-271

Abstract

In this paper, a procedure to estimate complex modulus of incompressible viscoelastic materials from stiffness measurements as functions of frequencyunder heavy compressive pre-strain is presented together with some resultsfor a typical viscoelastic material. Two existing methods are discussed which enable predictions of the complex modulus based on the measurements as functions of frequency and pre-strain. A new more efficient formula is proposed which obtains the modulus by combining the frequency effects at a reference pre-strain and the pre-strain effects at a chosen frequency, i.e., dynamic effects. This formula reflects the trend of dynamic modulus with the static compression under the assumption that the relaxation function is dependent on the static compression. The relaxation function can be transformed into frequency-dependent functions, which are modified to represent the pre-strain effect at a chosen frequency. Dynamic properties of a viscoelastic material were obtained at a given strain amplitude from 1 to 180 Hz under nine levels of compressive pre-strain and performances of the formulas are comparatively discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 16:11:02