نتایج جستجو برای: linear elastic fracture mechanics

تعداد نتایج: 760398  

Journal: :Frattura ed Integrità Strutturale 2008

A. Golshani K. Goshtasbi M. Behnia M. Fatehi Marji

Numerical methods such as boundary element and finite element methods are widely used for the stress analysis in solid mechanics. This study presents boundary element method based on the displacement discontinuity formulation to solve general problems of interaction between hydraulic fracturing and discontinuities. The crack tip element and a higher order boundary displacement collocation techn...

2006
Helena NICKLASSON Fridrun PODCZECK

The mechanical strength of pharmaceutical compacts is an important in-process control parameter to ensure that tablets have sufficient strength to withstand handling during production, transport and use. The introduction of the “Brazilian test” into the pharmaceutical sciences by Fell and Newton has enabled a fundamental understanding of the stresses involved in the breaking of compacts and pro...

Journal: : 2021

The concrete always contains microstructures like micro-crack, voids, etc. These parameters affected the lifetime of materials. This article presents a computation algorithm to predict brittle materials which depends on distribution micro-crack in proposed model is based subcritical crack growth using linear elastic fracture mechanics (LEFM) approach. considers both tensile and shear fracturing...

Journal: :IOP conference series 2021

Abstract An influence of the bi-material interface between a steel substrate and thin protective layer applied through laser cladding was investigated. A range elastic properties thicknesses were considered to cover behaviour short crack in selected materials such as bronze, nickel or cobalt alloys. The special case terminating directly at investigated, which is connected necessity application ...

Journal: :Fracture and Structural Integrity 2022

Finite Fracture Mechanics and Cohesive Crack Model can effectively predict the strength of plain, cracked or notched structural components, overcoming classical drawbacks Linear Elastic Mechanics. Aim present work is to investigate size effects by expressing each model as a unified system two equations, describing stress requirement energy balance, respectively. Brittle crack onset in different...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2005
Paul A Wiggins Rob Phillips Philip C Nelson

The importance of nonlinearities in material constitutive relations has long been appreciated in the continuum mechanics of macroscopic rods. Although the moment (torque) response to bending is almost universally linear for small deflection angles, many rod systems exhibit a high-curvature softening. The signature behavior of these rod systems is a kinking transition in which the bending is loc...

2017

Cracking is a major distress in asphalt pavement which can lead to premature pavement failures and can cost agencies millions of dollars in maintenance and rehabilitation costs. Even with modern advances in pavement engineering, attempts to quantify and model cracking in asphalt pavements have proved extremely challenging; this is due to the visco-elastic behavior of asphalt concrete and the co...

2018
MOJ Civil

Cracking is a major distress in asphalt pavement which can lead to premature pavement failures and can cost agencies millions of dollars in maintenance and rehabilitation costs. Even with modern advances in pavement engineering, attempts to quantify and model cracking in asphalt pavements have proved extremely challenging; this is due to the visco-elastic behavior of asphalt concrete and the co...

Journal: :journal of mining and environment 2012
m. behnia k. goshtasbi m. fatehi marji a. golshani

numerical methods such as boundary element and finite element methods are widely used for the stress analysis in solid mechanics. this study presents boundary element method based on the displacement discontinuity formulation to solve general problems of interaction between hydraulic fracturing and discontinuities. the crack tip element and a higher order boundary displacement collocation techn...

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