STUDY ON THE MATCHING OF CRACK-TIP CONSTRAINTS AMONG DIFFERENT LABORATORY SPECIMENS

YANG Jie; LIU YuMan; WU Fan

doi:10.16579/j.issn.1001.9669.2019.06.007

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STUDY ON THE MATCHING OF CRACK-TIP CONSTRAINTS AMONG DIFFERENT LABORATORY SPECIMENS

更新时间：2022-09-22

- STUDY ON THE MATCHING OF CRACK-TIP CONSTRAINTS AMONG DIFFERENT LABORATORY SPECIMENS
- Journal of Mechanical Strength Vol. 41, Issue 6, Pages: 1308-1314(2019)
- 作者机构：
  
  1. 上海理工大学能源与动力工程学院
  2. 中国重型汽车集团有限公司技术发展中心
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2019.06.007
  CLC：
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YANG Jie, LIU YuMan, WU Fan. STUDY ON THE MATCHING OF CRACK-TIP CONSTRAINTS AMONG DIFFERENT LABORATORY SPECIMENS. [J]. 41(6):1308-1314(2019)
DOI：

YANG Jie, LIU YuMan, WU Fan. STUDY ON THE MATCHING OF CRACK-TIP CONSTRAINTS AMONG DIFFERENT LABORATORY SPECIMENS. [J]. 41(6):1308-1314(2019) DOI： 10.16579/j.issn.1001.9669.2019.06.007.

摘要

裂尖拘束度的匹配是目前结构完整性评定中所面临的难题。由于拘束参数的限制,不同实验室试样间、实验室试样与实际结构间拘束度的匹配还没有建立。基于统一拘束参数Ap,以常用实验室SENB,CT,SENT和CCT试样为研究对象,对不同拘束状态下各试样的裂尖拘束进行研究,构建了不同试样的J/J,ref,-(A ,p,),1/2,关联线,建立了不同试样间拘束度的匹配。本研究将为构建纳入拘束的准确的结构完整性评定技术和方法提供科学支持。

Abstract

The matching of crack tip constraints is a difficult problem in the current structure integrity assessment method.Due to the restriction of current constraint parameters,the matching of crack tip constraints between different laboratory specimens,between laboratory specimens and actual structures have not been established. In this paper,based on the unified constraint parameter A,p,the constraints of different SENB,CT,SENT and CCT specimens were studied,the J/J,ref,-（A,p,）,1/2, correlation lines and the matching of crack tip constraints between different laboratory specimens were established. This study will provide scientific support for building an accurate structure integrity assessment method which considers constraint.

关键词

拘束匹配实验室试样结构完整性评定

Keywords

ConstraintMatchingLaboratory specimenStructure integrity assessment

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Department of Mechanical ＆ Aerospace Engineering,University of Strathclyde

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Guizhou Zhanyang Kinetics Co.,Ltd.

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