Saharan , Mani Ram (2008) Numerical Procedure for Dynamic Simulation of Discrete Fractures due to Blasting. Rock Mechanics and Rock Engineering , 41 (5). pp. 641-670. ISSN 0723-2632

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Abstract

This paper describes development of a generic nonlinear, dynamic modelling technique to simulate discrete rock fractures due to blasting using the finite element method. The element elimination technique together with a brittle, Rankine failure-type material model are used as a means to simulate the initiation and growth of fractures in the rock under the effect of blast-induced dynamic pressure pulse. Dynamic loads representing ideal and non-ideal detonations are simulated and a new method, termed as optimised pressure profile, is proposed to approximate the pressure-time profile of the blast load to model the dynamic load. Comparison of numerical model results with previously reported observations from the literature reveals the ability of the model as a predictive tool and supports the validity of the developed modelling procedure.

Item Type:	Article
Uncontrolled Keywords:	Finite element method, dynamic analysis, nonlinear modelling, element elimination technique, discrete fractures, rock fracturing.
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	01 Mar 2012 04:52
Last Modified:	01 Mar 2012 04:52
URI:	http://cimfr.csircentral.net/id/eprint/1014

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