Topic
Elastic modulus
About: Elastic modulus is a research topic. Over the lifetime, 33153 publications have been published within this topic receiving 810247 citations.
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TL;DR: In this article, the Voronoi tessellation technique and the finite element method are utilized to investigate the microstructure-property relations of two-dimensional cellular solids having irregular cell shapes and non-uniform cell wall thickness.
167 citations
TL;DR: In this article, a phase field method is adopted to generate the bicontinuous open-cell porous microstructure of the material and molecular dynamics simulations reveal that the uniaxial tensile deformation in such porous materials is accompanied by an accumulation of stacking faults in ligaments along the loading direction and their junctions with neighboring ligaments.
Abstract: Nanoporous metals are a class of novel nanomaterials with potential applications in many fields such as sensing, catalysis, and fuel cells. The present paper is aimed to investigate atomic mechanisms associated with the uniaxial tensile deformation behavior of nanoporous gold. A phase field method is adopted to generate the bicontinuous open-cell porous microstructure of the material. Molecular dynamics simulations then reveal that the uniaxial tensile deformation in such porous materials is accompanied by an accumulation of stacking faults in ligaments along the loading direction and their junctions with neighboring ligaments, as well as the formation of Lomer–Cottrell locks at such junctions. The tensile strain leads to progressive necking and rupture of some ligaments, ultimately resulting in failure of the material. The simulation results also suggest scaling laws for the effective Young's modulus, yield stress, and ultimate strength as functions of the relative mass density and average ligament size in the material.
167 citations
TL;DR: In this paper, the effect of the rate and path of loading and unloading on the mechanical properties of the composed coal rock has been analyzed, and the overall elastic modulus, peak strength, and residual strength of the coal rock lie among that of roof, coal, and floor.
166 citations
TL;DR: In this article, a new method of measuring the velocity of surface waves and hence determining the dynamic modulus of elasticity and Poisson's ratio for concrete or other solid materials is presented.
166 citations
TL;DR: The variation of the frequency dependence of the differential elastic and loss moduli as a function of Prestress is consistent with that observed in living cells, suggesting that cell elasticity is always measured in the nonlinear regime, and that prestress is an essential control parameter.
Abstract: Networks of filamentous actin cross-linked with the actin-binding protein filamin A exhibit remarkable strain stiffening leading to an increase in differential elastic modulus by several orders of magnitude over the linear value. The variation of the frequency dependence of the differential elastic and loss moduli as a function of prestress is consistent with that observed in living cells, suggesting that cell elasticity is always measured in the nonlinear regime, and that prestress is an essential control parameter.
165 citations