Relative damage and computation of damage cumulation for blasting in rock

MA Jian-jun

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Relative damage and computation of damage cumulation for blasting in rock

更新时间：2026-06-25

- Relative damage and computation of damage cumulation for blasting in rock
- Vol. 27, Issue 6, (2006)
- 作者机构：
  
  武汉科技大学理学院,武汉,430081
- 作者简介：
- 基金信息：
- DOI：
  CLC： O382+.2
- Online First：14 November 2013，
  
  Published：2006
- 稿件说明：
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MA Jian-jun. Relative damage and computation of damage cumulation for blasting in rock[J]. 2006, 27(6).
DOI：

MA Jian-jun. Relative damage and computation of damage cumulation for blasting in rock[J]. 2006, 27(6). DOI：

摘要

为了便于工程应用，利用损伤变量定义，确定既真实反映力学作用过程，又易于获取和进行客观度量损伤变量的一种方法。通过提出的相对损伤概念，用相对损伤变量表示含损伤材料在载荷作用下损伤扩展程度和不同部位的相对损伤程度，使衡量受力作用程度的损伤变量确定更易实现。同时，提出了一种基于裂纹扩展的损伤累积计算方法，并用实例计算说明了其合理可行。

Abstract

Using definition of damage variable

a method for engineering application is put forward; and it not only reflects real mechanical course

but also obtains and measures its value readily and objectively. The definition of relative damage is brought out. The degree of damage expansion and relative damage of different parts when the damage material under blasting action could be expressed with it

and the determination of damage variable which measures the degree of loading is easier. At the same time

based on crack expansion

a computation method of damage cumulation is suggested.

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