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任意加载模式下含裂纹超弹性体的能量释放率
  • ISSN号：0459-1879
  • 期刊名称：力学学报
  • 时间：2013.1.18
  • 页码：129-133
  • 分类：O346.1[理学—固体力学;理学—力学]
  • 作者机构：[1]高性能计算研究院,新加坡138632, [2]清华大学航天航空学院工程力学系,应用力学教育部重点实验室,北京100084
  • 相关基金：国家自然科学基金资助项目（51232004.90816006.11090334）.
  • 相关项目：层状电磁复合材料的失效机理与断裂准则
作者： 张作启|刘彬|
关键词： 加载模式, 非线性弹性, 能量释放率, 柔度标定, 裂纹扩展, loading mode, nonlinear elasticity, energy release rate, compliance method, crack growth
中文摘要：

能量释放率是表征断裂性能的一个重要指标，在经典的断裂力学中，只给出在恒力或恒位移加载情形下通过柔度标定来确定材料能量释放率的公式，而且仅限于线弹性材料．但是近年来生物材料和高分子材料（如橡胶）等超弹性材料的断裂韧性和增韧机理越来越受到研究人员的关注，该文旨在导出一个更加通用的柔度标定公式，从而可以确定非线性弹性材料在任意加载模式下的能量释放率，并能判断裂纹扩展的稳定性．在推导的过程中，对一些重要而容易被错误理解的概念做了进一步论述．

英文摘要：

Energy release rate is an important parameter characterizing fracture behaviors of materials. In classic fracture mechanics, only formulae for the energy release rate of linear elastic cracked structures are given by compliance method, especially limited to fixed loading or displacement boundary conditions. Moreover, the fracture toughness and toughening mechanism of hyperelastic materials such as biomaterials and polymer （rubber-like materials） are attracting more and more attention of researchers. The paper aims to develop general formulae to calculate the energy release rate of nonlinear elastic structures under arbitrary loading conditions, and these formulae also facilitate to evaluate the stability of crack growth. During the deducing process, several important but misleading concepts are further clarified.

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期刊信息
  • 《力学学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国力学学会 中国科学院力学研究所
  • 主编：魏悦广
  • 地址：北京市海淀区北四环西路15号中科院力学所内《力学学报》
  • 邮编：100190
  • 邮箱：lxxb@cstam.org.cn
  • 电话：010-62536271
  • 国际标准刊号：ISSN：0459-1879
  • 国内统一刊号：ISSN：11-2062/O3
  • 邮发代号:2-814
  • 获奖情况:
  • 1992年首届自然科技期刊一等奖,1996年国家自然科技期刊二等奖,2000年首届国家期刊奖
  • 国内外数据库收录:
  • 美国数学评论（网络版）,荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:13332