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[1]代巧,周昌玉,彭剑,等.室温蠕变下含轴向内表面裂纹钛管的失效评定[J].南京工业大学学报(自然科学版),2015,37(03):56-60.[doi:10.3969/j.issn.1671-7627.2015.03.011]
 DAI Qiao,ZHOU Changyu,PENG Jian,et al.Failure assessment of titanium pipe with internal axial surface crack under room-temperature creep condition[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2015,37(03):56-60.[doi:10.3969/j.issn.1671-7627.2015.03.011]
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室温蠕变下含轴向内表面裂纹钛管的失效评定()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
37
期数:
2015年03期
页码:
56-60
栏目:
出版日期:
2015-05-30

文章信息/Info

Title:
Failure assessment of titanium pipe with internal axial surface crack under room-temperature creep condition
文章编号:
1671-7627(2015)03-0056-05
作者:
代巧周昌玉彭剑贺小华
南京工业大学 机械与动力工程学院,江苏 南京 211800
Author(s):
DAI QiaoZHOU ChangyuPENG JianHE Xiaohua
School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
室温蠕变 含裂纹管道 工业纯钛TA2 失效评定曲线
Keywords:
room-temperature creep pipe with crack commercially pure titanium TA2 failure assessment curves
分类号:
TQ055.8
DOI:
10.3969/j.issn.1671-7627.2015.03.011
文献标志码:
A
摘要:
对室温蠕变条件下含轴向内表面裂纹钛管的失效评定曲线(FACs)进行了研究。根据工业纯钛TA2拉伸应力-应变关系及有限元方法,建立了TA2的R6 Option 2 FAC以及受内压含轴向内表面裂纹钛管的R6 Option 3 FAC,并与R6 Option 1曲线比较。结果表明Option 1曲线适用于含轴向内表面裂纹钛管的常规安全评定。由于TA2存在室温蠕变现象,根据TA2拉伸应力-应变关系和室温蠕变数据,建立了TA2与时间相关的失效评定曲线(TDFAC),并与R6 Option 1曲线进行比较。结果表明TA2的室温蠕变现象对含裂纹结构的安全评定有显著的影响,对含轴向内表面裂纹钛管进行安全评定时需要考虑室温蠕变的影响,应采用TDFAC进行安全评定。
Abstract:
The failure assessment curves(FACs)of titanium pipe with internal axial surface crack under room-temperature creep condition were studied.According to the tensile stress-strain relationship of commercially pure titanium TA2 and finite element(FE)simulation,the R6 Option 2 FAC of TA2 and the R6 Option 3 FAC of the titanium pipe with internal axial surface crack were established and compared with the R6 Option 1 curve.Results indicated that the R6 Option 1 curve was suitable for the conventional safety assessment of the titanium pipe with internal axial surface crack.TA2 existed evident creep phenomenon at the room temperature.According to the tensile stress-strain relationship and room-temperature creep data of TA2,the time-dependent failure assessment curves(TDFACs)of TA2 were established and compared with the R6 Option 1 curve.Results showed that the room-temperature creep of TA2 had an evident effect on the safety assessment of the structures with cracks.The effect of room-temperature creep needs to be considered for safety assessment of the titanium pipe with internal axial surface crack. Thus, the TDFAC should be applied.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-03-03
基金项目:国家自然科学基金(51475223,51075199); 江苏省普通高校研究生科研创新计划(CXZZ11_0341)
作者简介:代巧(1986—),女,四川资中人,博士生,主要研究方向为含裂纹结构的失效评定; 周昌玉(联系人),教授,E-mail:changyu_zhou@163.com.
引用本文:代巧,周昌玉,彭剑,等.室温蠕变下含轴向内表面裂纹钛管的失效评定[J].南京工业大学学报:自然科学版,2015,37(3):56-60..
更新日期/Last Update: 2015-05-20