Topic
Micromechanics
About: Micromechanics is a research topic. Over the lifetime, 6000 publications have been published within this topic receiving 162635 citations.
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TL;DR: In this paper, a new multiscale analysis method which combines the micromechanics of failure (MMF) theory for intralaminar damage and cohesive model for interlaminar failure is proposed.
57 citations
TL;DR: In this article, the generalized continuum theory of couple-stress elasticity is used to analyze the structural properties of a deformable elastic half-plane by a flat punch, then by a cylindrical indentor and finally by a shallow wedge indentor.
57 citations
TL;DR: In this article, the effective elastic moduli, fracture strength, and failure process of solids containing a large number and/or a high density of micro-cracks are investigated.
Abstract: This article addresses several issues in damage micromechanics for microcracked brittle or quasi-brittle solids, with major attention paid on summariz- ing some recent works of the present authors. First, we discuss the methods for characterizing evolutionary damage of microcracks and introduce the concept of orientation domain of microcrack growth. Second, we describe how to calculate the macroscopically effective constitutive relation of microcracking solids under complex loading. Third, the effective medium or effective field methods for estimating the effective elastic moduli of microcracked solids are formulated into a universal frame- work. Fourth, a subregion method is suggested to calculate the effective elastic moduli, fracture strength, and failure process of solids containing a large number and/or a high density of microcracks. Additionally, this method is combined with the finite element method to simulate the damage evolution and failure process of engi- neering structures.
57 citations
TL;DR: In this paper, an integrated mechanics theory was developed for the modeling of composite damping from the micromechanics to the laminate level, including the effect of temperature, moisture, and interply hysteretic damping.
Abstract: An integrated mechanics theory was developed for the modeling of composite damping from the micromechanics to the laminate level. Simplified, design oriented equations based on hysteretic damping are presented for on-axis plies, off-axis plies, and laminates including the effect of temperature, moisture, and interply hysteretic damping. The temperature rise within vibrating composite laminates resulting from strain energy dissipation is also modeled, and their coupled hygro-thermo-mechanical response is predicted. The method correlates well with reported damping measurements. Application examples illustrate the effect of various ply, laminate, and hygro-thermal parameters on the overall damping performance of composite laminates.
57 citations
TL;DR: In this article, the boundary layer effect exhibited by the shear stress field, expressed in terms of the torsional warping function, near the cross-section boundary is investigated.
57 citations