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Finite element analysis of blast-induced fracture propagation in hard rocks

机译:爆炸引起的硬岩裂缝扩展的有限元分析

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摘要

This paper presents a numerical analysis based on the finite element method to simulate blast-induced hard rock fracture propagation. Three different approaches are compared: the extended finite element method, with a cohesive zone model to represent the growth of fractures; the conventional finite element method using a remeshing technique and based on the linear fracture mechanics; the element deletion method to simulate a rock fragmentation process. The rock mass is a sound granite that remains linear elastic right up the breakage. Two numerical examples are presented in order to discuss the advantages and limitations of each approach. (C) 2016 Elsevier Ltd. All rights reserved.
机译:本文提出了基于有限元方法的数值分析,以模拟爆炸引起的硬岩裂隙扩展。比较了三种不同的方法:扩展有限元法,用内聚区模型表示裂缝的增长;常规的有限元方法基于网格断裂力学,采用网格化技术。模拟岩石破碎过程的元素删除方法。岩体是一种优质花岗岩,在破裂处一直保持线性弹性。给出了两个数值示例,以讨论每种方法的优点和局限性。 (C)2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Computers & Structures》 |2017年第4期|1-13|共13页
  • 作者单位

    Pontifical Catholic Univ Rio De Janeiro PUC Rio, Dept Civil Engn, Rua Mq S Vicente 225 Gavea, BR-22451900 Rio De Janeiro, RJ, Brazil;

    Pontifical Catholic Univ Rio De Janeiro PUC Rio, Dept Civil Engn, Rua Mq S Vicente 225 Gavea, BR-22451900 Rio De Janeiro, RJ, Brazil;

    Pontifical Catholic Univ Rio De Janeiro PUC Rio, Dept Civil Engn, Rua Mq S Vicente 225 Gavea, BR-22451900 Rio De Janeiro, RJ, Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Rock blasting; Fracture propagation; Extended finite element method; Cohesive zone model;

    机译:爆破裂隙扩展扩展有限元法内聚力模型;

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