IMECH-IR  > 非线性力学国家重点实验室
非均匀脆性介质损伤演化的一维准静态线性失稳及其发展
Alternative TitleOne-dimension damage evolution instability and its growth of heterogeneous brittle material under quasi-static loading
郝圣旺
Source Publication燕山大学学报
2011-09-30
Volume35Issue:5Pages:459-464
ISSN1007-791X
Abstract非均匀脆性介质的局部化转变及其发展是非均匀介质通向灾变破坏的一个重要途径,对于均匀场失稳及其发展的认识是理解局部化触发灾变破坏的根本。本文通过微扰分析方法,基于损伤演化方程,分析了非均匀脆性介质的均匀场在微小扰动下的线性失稳问题,指出一维弹脆性系统的损伤演化最大应力点后可能发生失稳。基于分区平均场近似和弹脆性模型分析了系统发生一部分加载另一部分卸载的非均匀演化问题,结果表明均匀场发生这种非均匀转变并继续发展的状态是可以存在的。而发生这种分叉失稳后,系统中出现部分弹性卸载和部分继续损伤的非均匀性会进一步发展和增强。
Other AbstractThe uncertainty of both localization transition and its growth are a key factor leading to the uncertainty of catastrophic rupture.In this paper,instabilities in heterogeneous material are investigated for one-dimensional state under quasi-static loadings by using a perturbation approach.The interests of present paper focused in particular on the onset and growth of localization.The perturbation analysis indicated that the instability might be occur after peak stress point.Base on local-mean-field approximation and the elastic and statistical brittle(ESB) model,it is demonstrated that the state that one part unloads elastically but the other part is loaded could appear if the system is loaded by controlling the boundary displacement.Moreover,the localization would grow with loading.These results can help to understand the mechanism of localization evolution inducing catastrophic rupture.
Keyword非均匀脆性介质 失稳 局部化 灾变破坏
Subject Area力学
URL查看原文
Language中文
Funding Organization国家自然科学基金资助项目(90715001,10802073);河北省高校百名优秀创新人才支持计划项目(CPRC019)
DepartmentLNM材料的分子/细观统计力学行为
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44967
Collection非线性力学国家重点实验室
Corresponding Author郝圣旺
Recommended Citation
GB/T 7714
郝圣旺. 非均匀脆性介质损伤演化的一维准静态线性失稳及其发展[J]. 燕山大学学报,2011,35(5):459-464.
APA 郝圣旺.(2011).非均匀脆性介质损伤演化的一维准静态线性失稳及其发展.燕山大学学报,35(5),459-464.
MLA 郝圣旺."非均匀脆性介质损伤演化的一维准静态线性失稳及其发展".燕山大学学报 35.5(2011):459-464.
Files in This Item: Download All
File Name/Size DocType Version Access License
C2011J045.pdf(189KB) 开放获取--View Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[郝圣旺]'s Articles
Baidu academic
Similar articles in Baidu academic
[郝圣旺]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[郝圣旺]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: C2011J045.pdf
Format: Adobe PDF
This file does not support browsing at this time
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.