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Indexed by:期刊论文

Date of Publication:2019-01-15

Journal:COMPOSITE STRUCTURES

Included Journals:SCIE、Scopus

Volume:208

Page Number:276-286

ISSN No.:0263-8223

Key Words:Asymptotic homogenization; Viscoelastic composites; Complex moduli; Loss factor; Double-layer elements method

Abstract:There is a growing demand for methods to estimate the effective viscoelastic response of viscoelastic composites, for their applications in structural vibration and noise control. This paper proposes a novel reformulation and numerical implementation algorithm for the asymptotic homogenization theory for predicting the effective complex moduli of viscoelastic composites in the frequency domain. In the new algorithm, an equivalent harmonic analysis is established and a double-layer elements method is proposed to solve the local problem in the homogenization process. On the basis of the new algorithm, the effective complex moduli can be obtained easily by using commercial software to serve as a black box. Numerous elements and techniques for modeling and analysis available in commercial software can be applied to complicated microstructures without mathematical derivation. The numerical examples presented show the validity of this new implementation algorithm.