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鈦制壓力容器的室溫蠕變極限載荷研究
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南京工業(yè)大學(xué) 江蘇 南京 211816,南京工業(yè)大學(xué) 江蘇 南京 211816,南京工業(yè)大學(xué) 江蘇 南京 211816,南京工業(yè)大學(xué) 江蘇 南京 211816,南京工業(yè)大學(xué) 江蘇 南京 211816

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TG146.2 3

基金項(xiàng)目:

國(guó)家自然科學(xué)基金資助(項(xiàng)目號(hào)51475223, 51075199)；江蘇省研究生科研創(chuàng)新計(jì)劃(KYLX15_0801)


Creep limit load analyses for titanium pressure vessels at ambient temperature
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Nanjing Tech University,Nanjing Tech University,Nanjing Tech University,Nanjing Tech University,Nanjing Tech University

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    摘要:

    根據(jù)工業(yè)純鈦的室溫蠕變等時(shí)應(yīng)力應(yīng)變曲線,應(yīng)用有限元方法研究了鈦制壓力容器的蠕變極限載荷。以圓筒型壓力容器為例,發(fā)現(xiàn)隨著室溫蠕變時(shí)間的增加壓力容器極限載荷由快速下降趨于緩慢下降。詳細(xì)分析了徑比K對(duì)極限載荷的影響規(guī)律,給出了室溫極限載荷的預(yù)測(cè)公式。能夠體現(xiàn)蠕變時(shí)間對(duì)極限載荷的劣化作用,以及許用應(yīng)變和徑比K對(duì)極限載荷的影響。研究結(jié)果可以對(duì)鈦制承壓設(shè)備的安全評(píng)定提供有力的參考依據(jù)。

    Abstract:

    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.

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引用本文

李建,周昌玉,彭劍,常樂,賀小華.鈦制壓力容器的室溫蠕變極限載荷研究[J].稀有金屬材料與工程,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.]
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  • 收稿日期:2015-07-18
  • 最后修改日期:2015-08-28
  • 錄用日期:2015-10-15
  • 在線發(fā)布日期: 2017-12-01
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