铝合金内胆碳纤维缠绕气瓶爆破与疲劳性能研究

doi:10.19936/j.cnki.2096-8000.20220828.005

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (8): 35-43.DOI: 10.19936/j.cnki.2096-8000.20220828.005

铝合金内胆碳纤维缠绕气瓶爆破与疲劳性能研究

康凯¹, 祖磊¹, 吴乔国^2*, 张骞¹, 张桂明¹

1.合肥工业大学机械工程学院,合肥230009;
2.合肥工业大学土木与水利工程学院,合肥230009

收稿日期:2021-08-30 出版日期:2022-08-28 发布日期:2022-09-27
通讯作者: 吴乔国(1984-),男,博士,副研究员,主要从事复合材料力学与结构设计方面的研究,qgwu@hfut.edu.cn。
作者简介:康凯(1996-),男,硕士生,研究方向为复合材料纤维缠绕气瓶结构设计与优化。
基金资助:
国家自然科学基金项目(51875159,52175311,52175133,12102115);安徽省重点研究与开发计划项目(201904d07020013)

Research on burst strength and fatigue performance of carbon fiber wound composite cylinder with aluminum alloy liner

KANG Kai¹, ZU Lei¹, WU Qiao-guo^2*, ZHANG Qian¹, ZHANG Gui-ming¹

1. School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China;
2. College of Civil Engineering, Hefei University of Technology, Hefei 230009, China

Received:2021-08-30 Online:2022-08-28 Published:2022-09-27

摘要/Abstract

摘要： 本文采用试验测试与数值模拟相结合的方法,研究了铝合金内胆碳纤维缠绕气瓶爆破压力与疲劳寿命的关联规律。开展了铝合金内胆碳纤维缠绕气瓶的设计和制造,并进行了水压爆破和疲劳性能试验测试,获得了气瓶的爆破压力、疲劳寿命和破坏形貌。建立了基于渐进损伤分析模型的气瓶爆破压力预测方法、基于Morrow平均应力修正及Manson-Coffin等效应变法的气瓶疲劳寿命预测方法,取得了与试验吻合的结果。分析了气瓶设计参数对爆破压力和疲劳寿命的影响规律,结果表明,2.25倍爆破安全系数的气瓶在工作压力较高或气瓶筒身直径较大的情况下,仅通过自紧处理难以同时满足最小爆破压力和最低疲劳寿命的要求,因此还需适当地提高爆破安全系数或增加内胆筒身厚度。

关键词: 碳纤维缠绕气瓶, 铝合金内胆, 疲劳寿命, 爆破压力, 参数分析

Abstract: In this paper, the relationship between burst pressure and fatigue life of carbon fiber wound composite cylinders with aluminum alloy liner is studied by means of experimental tests and numerical simulations. The design and manufacture of carbon fiber wound composite cylinders with aluminum alloy liner were carried out, and the hydrostatic burst and fatigue performance tests were carried out. The burst pressure, fatigue life and failure morphology of the cylinders were obtained. The burst pressure prediction method based on progressive damage analysis model and the fatigue life prediction method based on Morrow mean stress correction and Manson-Coffin equivalent strain are proposed, and the prediction results agree with the tests. The influence of cylinder design parameters on burst pressure and fatigue life is analyzed. It reveals that under the condition of higher nominal pressure or larger diameter of the cylinder, it is difficult for the cylinder with 2.25 times burst safety factor to meet the requirements of minimum burst pressure and minimum fatigue life at the same time only by autofrettage, and it is necessary to appropriately increase the burst safety factor or the thickness of the cylinder.

Key words: carbon fiber wound cylinder, aluminum alloy liner, fatigue life, burst pressure, parameter analysis

中图分类号:

TB332

康凯, 祖磊, 吴乔国, 张骞, 张桂明. 铝合金内胆碳纤维缠绕气瓶爆破与疲劳性能研究[J]. 复合材料科学与工程, 2022, 0(8): 35-43.

KANG Kai, ZU Lei, WU Qiao-guo, ZHANG Qian, ZHANG Gui-ming. Research on burst strength and fatigue performance of carbon fiber wound composite cylinder with aluminum alloy liner[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(8): 35-43.

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铝合金内胆碳纤维缠绕气瓶爆破与疲劳性能研究

Research on burst strength and fatigue performance of carbon fiber wound composite cylinder with aluminum alloy liner

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