A multifield continuum is adopted to grossly describe the dynamical behavior of composite microcracked solids. The constitutive relations for the internal and external (inertial) actions are obtained using a multiscale modeling based on the hypotheses of the classical molecular theory of elasticity and the ensuing overall elastodynamic properties allow us to take properly into account the microscopic features of these materials. Referring to a one-dimensional microcracked bar, the ability of such a continuum to reveal the presence of internal heterogeneities is investigated by analyzing the relevant dispersive wave propagation properties. Scattering of traveling waves is shown to be associated with the microcrack density in the bar.

A generalized continuum formulation for composite microcracked materials and wave propagation in a bar / Trovalusci, Patrizia; V., Varano; Rega, Giuseppe. - In: JOURNAL OF APPLIED MECHANICS. - ISSN 0021-8936. - STAMPA. - 77(6):(2010), pp. 061002/1-11. [10.1115/1.4001639]

A generalized continuum formulation for composite microcracked materials and wave propagation in a bar

TROVALUSCI, Patrizia;REGA, GIUSEPPE
2010

Abstract

A multifield continuum is adopted to grossly describe the dynamical behavior of composite microcracked solids. The constitutive relations for the internal and external (inertial) actions are obtained using a multiscale modeling based on the hypotheses of the classical molecular theory of elasticity and the ensuing overall elastodynamic properties allow us to take properly into account the microscopic features of these materials. Referring to a one-dimensional microcracked bar, the ability of such a continuum to reveal the presence of internal heterogeneities is investigated by analyzing the relevant dispersive wave propagation properties. Scattering of traveling waves is shown to be associated with the microcrack density in the bar.
2010
composite materials,; multifield continua; lattice mechanics; wave propagation; dispersion
01 Pubblicazione su rivista::01a Articolo in rivista
A generalized continuum formulation for composite microcracked materials and wave propagation in a bar / Trovalusci, Patrizia; V., Varano; Rega, Giuseppe. - In: JOURNAL OF APPLIED MECHANICS. - ISSN 0021-8936. - STAMPA. - 77(6):(2010), pp. 061002/1-11. [10.1115/1.4001639]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/231552
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