نتایج جستجو برای: fracture geometrical aspects
تعداد نتایج: 474373 فیلتر نتایج به سال:
The structural applicability of fibre-reinforced polymer (FRP) composites requires testing for their resilience against fracture. paper presents a virtual tool to configure the microscale geometrical model constituting representative volume element embedded in homogeneous macroscale region, providing an alternative tedious experimental procedures. conformal meshing strategies microregion are al...
The main aim of blasting operations in mining and civil engineering projects is size reduction of the rock-mass. Particle size reduction (P.S.R) affects the efficiency of the loading, haulage and milling equipments. Therefore, prediction of mean fragment size in designing optimum blasting patterns is crucial. In this research, a model is presented for predicting mean fragment size caused by bla...
REV size study was carried out for data of Sechahoon Anomaly XII mine by using discrete fracture network and distinct element method in order to characterize mechanical and behavioral properties of a highly jointed rock mass. By studying on scale dependency of mechanical properties of rock mass, REV size was determined. On the other hand, for continuum modeling of rock mass because of inherent ...
The purpose of this paper is to review, clarify, and critically analyse modern mathematical cosmology. The emphasis is upon the mathematical structures involved, rather than numerical computations. The opening section reviews and clarifies the Friedmann-Robertson-Walker models of General Relativistic Cosmology, while Section 2 deals with the spatially homogeneous models. Particular attention is...
The effect of the direction of the impact and the presence of axial loading on fracture patterns have not yet been established in experimental 3-point bending studies. PURPOSE To reveal the association between the direction of the force and the fracture pattern, with and without axial loading. MATERIAL AND METHODS A Dynatup Model POE 2000 (Instron Co.) low energy pendulum impact machine was...
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