Homogenization and Eeective Properties Formulations for Propagation in Finely Structured Laminates -a Multi-resolution Approach Ben Z. Steinberg, Homogenization and Eeective Properties -a Multiresolution Approach
نویسندگان
چکیده
Multi-resolution approach is used to derive homogenized (large-scale) formulation for propagation of waves in complex laminates. Basic entities such as boundary conditions, spatial and temporal spectrum (eigenvalues and resonances), Wronskian, modal expansions, and Green function representations associated with the homogenized formulation are discussed. The relations between them and their generic (all-scales, or complete) counterparts are studied. The dependence of these relations on parameters such as excitation frequency and heterogeneity length-scale are explored.
منابع مشابه
Homogenization and effective properties formulations for propagation in finely structured laminates — a multi-resolution approach
Multi-resolution approach is used to derive homogenized (large scale) formulation for propagation of waves in complex laminates. Basic entities such as boundary conditions, spatial and temporal spectrum (eigenvalues and resonances), Wronskian, modal expansions, and Green function representations associated with the homogenized formulation are discussed. The relations between them and their gene...
متن کاملA Multiresolution Homogenization of Modal Analysis with Application to Layered Media
We apply multiresolution techniques to study the eeective properties of boundary value problems. Conditions under which boundary values are preserved in the eeective (\homogenized") formulation are developed and discussed. Relations between the eigenfunctions and eigenvalues of the generic formulation and those of the eeective formulation are explored. Applications to the construction of eeecti...
متن کاملA Multiresolution Approach to Homogenization and Effective Modal Analysis of Complex Boundary Value Problems
We apply multiresolution techniques to study the eeective properties of boundary value problems. Conditions under which boundary values are preserved in the eeective (\ho-mogenized") formulation are developed and discussed. Relations between the eigenfunctions and eigenvalues of the generic formulation and those of the eeective formulation are explored and their dependence on the micro-scale is...
متن کاملA Multiresolution Approach for the Effective Properties of Complex Propagation Ducts and Effective Modes/rays Theory
Multiresolution techniques are used to study the eeective properties of propagation in nely struc-tured ducts. A new formulation governing the smoothed component of the eld is derived and compared to the generic formulation governing the complete eld. The relation between the small scale structure of the system heterogeneity and the large scale eld is investigated. In particular, we use multire...
متن کاملEffective Vertical Modes and Horizontal Rays for Wave Propagation in Complex Inhomogeneous Ducts
Wave propagation in complex inhomogeneous, quasi-layered, 3D media is addressed using multires-olution analysis (MRA). The complexity is characterized by a fast, nely structured, variation of the system heterogeneity in the vertical (stratiication) direction, and a slow horizontal variation of the system heterogene-ity and/or the vertical boundaries (\fast" and \slow" here are relative to the w...
متن کامل