| 李青青1，郑津洋1,2,3，张潇1，缪存坚1，高晓哲1，马 利1.应变强化奥氏体不锈钢液态二氧化碳储罐强度裕度研究[J].轻工机械,2015,33(5): |
| 应变强化奥氏体不锈钢液态二氧化碳储罐强度裕度研究 |
| Research on Strength Margin of Pressure Strengthened Liquid Carbon Dioxide Pressure Vessels |
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| DOI：IO. 3969/j . issn. 1005 -2895. 2015. 05. 007 |
| 中文关键词: 关键词：低温容器 应变强化 轻量化 液态二氧化碳 强度裕度 |
| 英文关键词:cryogenic vessel pressure strengthening lightweight liquid carbon dioxide strength margin |
| 基金项目:巾国博士后科学基金（2014M551731） |
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| 摘要点击次数: 1392 |
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| 中文摘要: |
| 应变强化是一种有效实现低温容器轻量化的技术，应变强化和低温是保证容器强化效果的重要因素，也是保障
容器强度裕度的关键。奥氏体不锈钢液态二氧化碳储罐的设计温度通常为- 40℃，该温度下材料的强化效果较弱，目
前国内暂时未推广应变强化技术在其中的应用。文章在- 40℃材料力学性能试验基础上，应用数值仿真对应变强化液
态二氧化碳储罐的强度裕度进行了研究，并结合标准分析了该应变强化储罐的安全性，结果表明应变强化奥氏体不锈钢
液态二氧化碳储罐其爆破压力与设计压力比值为3. 64，仍然具有较高的强度裕度。 |
| 英文摘要: |
| Pressure strengthening technique is a valid lightweight method in cryogenic vessel production. In this
technique, prestrain and low temperature are two important factors to achieve strengthening effect. and also the keys to
guarantee the strength margin. The design temperature of austenitic stainless steel pressure vessels for liquid carbon
dioxide (LCO2) is generally - 40 0C . which may lead to less improvement in strengthening effectiveness and lower
strength margin. Currently the technique has not yet been widely promoted in pressure strengthened LCO2 pressure
vessels in domestic. To study the structure strength of pressure strengthened LC02pressure vessels. the strength margin
of vessels was calculated by using finite element method based on material test results at - 40 0C . and the result was
compared with the codes. It was found that, the pressure strengthened LCO2 pressure vessels whose ratio of plastic
collapse pressure to the design pressure was 3. 64 still had sufficient strength margin. |
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