نتایج جستجو برای: effective transverse elastic properties

تعداد نتایج: 1598715  

2008

A cantilever beam is completely fixed at one end and free at the other. In the case of cantilevers, the support conditions in the transverse plane affect the moment pattern. For design purposes, it is convenient to use the concept of notional effective length, k, which would include both loading and support effects. The notional effective length is defined as the length of the notionally simply...

Journal: :European Journal of Mechanics A-solids 2023

Elastic anti-plane shear waves can be refracted negatively when they are transmitted across an interface between a homogeneous substrate and transverse periodic laminate. To achieve pure negative refraction, the frequency of source should lower than upper limit second transition zone harmonic spectrum An effective way to control location zones is consider canonical configuration for laminate, c...

Journal: :journal of petroleum science and technology 0
hamid soltanian i am working in ripi mohammad ataei university of shahrood reza khalokakaie university of shahrood ezatallah kazemzadeh ripi

an oil and gas well cementing in gachsaran formation, where sustained annular pressure has been reported in many wells, presents a big challenge in maroon field. the main challenges are preventing gas migration and achieving zonal isolation using a competent cement sealant system which is able to withstand downhole stresses and high temperatures during production cycles. unlike conventional cem...

2002
Christoph H. Arns Mark A. Knackstedt W. Val Pinczewski Edward J. Garboczi

Elastic property-porosity relationships are derived directly from microtomographic images. This is illustrated for a suite of four samples of Fontainebleau sandstone with porosities ranging from 7.5% to 22%. A finiteelement method is used to derive the elastic properties of digitized images. By estimating and minimizing several sources of numerical error, very accurate predictions of properties...

2012
Haji Abdul Aziz Sidek Shaharuddin Rosmawati Mohamed Kamari Halimah Khamirul Amin Matori Zainal Abidin Talib

This paper presents the results of the physical and elastic properties of the ternary zinc oxyfluoro tellurite glass system. Systematic series of glasses (AlF3)x(ZnO)y(TeO2)z with x = 0–19, y = 0–20 and z = 80, 85, 90 mol% were synthesized by the conventional rapid melt quenching technique. The composition dependence of the physical, mainly density and molar volume, and elastic properties is di...

2007
Eric M. Dunham James R. Rice

[1] A mismatch of elastic properties across a fault induces normal stress changes during spatially nonuniform in-plane slip. Recently, Rudnicki and Rice showed that similar effects follow from a mismatch of poroelastic properties (e.g., permeability) within fluid-saturated fringes of damaged material along the fault walls; in this case, it is pore pressure on the slip plane and hence effective ...

2015
Hongbo Dai Erik T. Thostenson Thomas Schumacher

This paper describes the development of an innovative carbon nanotube-based non-woven composite sensor that can be tailored for strain sensing properties and potentially offers a reliable and cost-effective sensing option for structural health monitoring (SHM). This novel strain sensor is fabricated using a readily scalable process of coating Carbon nanotubes (CNT) onto a nonwoven carrier fabri...

2013
D. J. Steigmann

Elastic surface waves propagating at the interface between an isotropic substrate and a thin, transversely isotropic film are analyzed. The transverse isotropy is conferred by fibers lying parallel to the interface. A rigorous leading-order model of the thin-film/substrate interface is derived from the equations of three-dimensional elasticity for prestressed, transversely isotropic films havin...

Journal: :journal of nanostructures 2013
a. ghorbanpour-arani m. shokravi

this paper is concerned with the surface and small scale effects on transverse vibration of a viscoelastic single-layered graphene sheet (slgs) subjected to an in-plane magnetic field. the slgs is surrounded by an elastic medium which is simulated as visco-pasternak foundation. in order to investigate the small scale effects, the nonlocal elasticity theory is employed due to its simplicity and ...

Journal: :Acta biomaterialia 2009
P-Y Chen A G Stokes J McKittrick

Antler and limb bone have a similar microstructure and chemical composition. Both are primarily composed of type I collagen and a mineral phase (carbonated apatite), arranged in osteons in compact (cortical bone) sections and a lamellar structure in the cancellous (spongy or trabecular bone) sections. The mineral content is lower in antler bone and it has a core of cancellous bone surrounded by...

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