李建,周昌玉,彭剑,常乐,贺小华.钛制压力容器的室温蠕变极限载荷研究[J].稀有金属材料与工程,2017,46(10):3011~3016.[Li Jian,Zhou Changyu,Peng Jian,Chang Le,He Xiaohua.Creep limit load analyses for titanium pressure vessels at ambient temperature[J].Rare Metal Materials and Engineering,2017,46(10):3011~3016.]
钛制压力容器的室温蠕变极限载荷研究
投稿时间:2015-07-18  修订日期:2015-08-28
中文关键词:  工业纯钛  室温蠕变  压力容器  蠕变极限载荷
基金项目:国家自然科学基金资助(项目号51475223, 51075199);江苏省研究生科研创新计划(KYLX15_0801)
中文摘要:
      根据工业纯钛的室温蠕变等时应力应变曲线,应用有限元方法研究了钛制压力容器的蠕变极限载荷。以圆筒型压力容器为例,发现随着室温蠕变时间的增加压力容器极限载荷由快速下降趋于缓慢下降。详细分析了径比K对极限载荷的影响规律,给出了室温极限载荷的预测公式。能够体现蠕变时间对极限载荷的劣化作用,以及许用应变和径比K对极限载荷的影响。研究结果可以对钛制承压设备的安全评定提供有力的参考依据。
Creep limit load analyses for titanium pressure vessels at ambient temperature
英文关键词:commercial pure titanium  ambient temperature creep  pressure vessels  creep limit load
英文摘要:
      Creep limit loads for TA2 made pressure vessels have been carried out by finite element (FE) method based on the isochronous stress-strain curves of commercial pure titanium at ambient temperature. Take the cylindrical pressure vessels as example, results mainly shows that creep limit loads will firstly decrease quickly and then decrease slowly with the time increasing. The influence effect of the ratio K on creep limit load has been conducted in detail, which provides estimating solutions for ambient temperature creep limit load prediction. These solutions can reflect the effect of the time degradation of limit load, and also the allowable strain and K on the limit load. This research will provide some valuable references to the safety assessment of titanium made pressure equipment.
作者单位E-mail
李建 南京工业大学 江苏 南京 211816 lijian83675215@163.com 
周昌玉 南京工业大学 江苏 南京 211816 changyu_zhou@163.com 
彭剑 南京工业大学 江苏 南京 211816  
常乐 南京工业大学 江苏 南京 211816  
贺小华 南京工业大学 江苏 南京 211816  
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