玻璃纤维增强铝锂合金层板单峰过载疲劳寿命性能对比研究

doi:10.7527/S1000-6893.2015.0219

固体力学与飞行器总体设计

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玻璃纤维增强铝锂合金层板单峰过载疲劳寿命性能对比研究

孟维迎¹, 谢里阳¹, 刘建中², 白鑫¹, 佟安时¹

1. 东北大学机械工程与自动化学院, 沈阳 110819;
2. 中航工业北京航空材料研究院, 北京 100095

收稿日期:2015-05-04 修回日期:2015-08-03 出版日期:2016-05-15 发布日期:2015-09-02
通讯作者: 谢里阳,Tel.:024-83673915 E-mail:lyxie@me.neu.edu.cn E-mail:lyxie@me.neu.edu.cn
作者简介:孟维迎,男,博士研究生。主要研究方向:纤维金属层板疲劳寿命性能。Tel:024-83678622 E-mail:mengweiying025@163.com;谢里阳,男,博士,教授,博士生导师。主要研究方向:机械疲劳强度与可靠性。Tel:024-83673915 E-mail:lyxie@me.neu.edu.cn
基金资助:
国家自然科学基金(51175072);国家自然科学基金重点项目(51335003)

Contrast study on fatigue life performance of glass fiber reinforced Al-Li alloy laminates under unimodal overload

MENG Weiying¹, XIE Liyang¹, LIU Jianzhong², BAI Xin¹, TONG Anshi¹

1. College of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China;
2. AVIC Beijing Institute of Aeronautical Materials, Beijing 100095, China

Received:2015-05-04 Revised:2015-08-03 Online:2016-05-15 Published:2015-09-02
Supported by:
National Natural Science Foundation of China (51175072);Major Program of National Natural Science Foundation of China (51335003)

摘要/Abstract

摘要：

为了研究铝锂合金、纤维金属层板(玻璃纤维增强铝锂合金2/1层板及3/2层板)材料不同加载下的疲劳寿命性能特点,对每种材料进行疲劳寿命试验。通过对每种材料试样施加不同循环特征的循环应力(恒幅循环应力(应力比R=0.06)、单峰拉伸过载、单峰压缩过载),共获得了9种应力-寿命试验数据。使用样本信息聚集原理,拟合出了各材料的P-S-N曲线。通过比较相同材料不同加载方式及相同加载方式不同材料下S-N曲线的差异,结果表明:拉伸过载下3种材料均表现出过载迟滞效应;压缩过载下合金材料表现出加速破坏效应,层板材料表现出一定的延迟效应;不同结构层板之间疲劳性能的优劣与其所受远程应力的大小有一定关系。

关键词: 纤维金属层板, 疲劳寿命, 疲劳试验, 循环应力, 过载

Abstract:

In order to study on fatigue life performance of the Al-Li alloy and fiber metal laminates (2/1 laminates and 3/2 laminates of glass fiber reinforced Al-Li alloy) under different loading modes, these materials are subjected to fatigue life test. Each type of the materials is applied to cyclic stress, which has different cycle characteristics (constant amplitude with the stress ratio 0.06, unimodal tensile overload and unimodal compressive overload). Nine kinds of test data on stress life are obtained and P-S-N curve of each material is fitted using the principle of sample polymerization. In addition, the differences of the S-N curve with the same material in different loading modes and different materials in the same loading mode are compared with each other. The results show that all of the three kinds of materials show the effect of overload retardation under tensile overload, Al-Li alloy material exhibits accelerated destruction effect and laminate materials exhibit a delayed effect under compressive overload. The pros and cons of fatigue performance between different structural laminates have a relationship with remote stress.

Key words: fiber metal laminates, fatigue life, fatigue test, cyclic stress, overloads

中图分类号:

V257

孟维迎, 谢里阳, 刘建中, 白鑫, 佟安时. 玻璃纤维增强铝锂合金层板单峰过载疲劳寿命性能对比研究[J]. 航空学报, 2016, 37(5): 1536-1543.

MENG Weiying, XIE Liyang, LIU Jianzhong, BAI Xin, TONG Anshi. Contrast study on fatigue life performance of glass fiber reinforced Al-Li alloy laminates under unimodal overload[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(5): 1536-1543.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

玻璃纤维增强铝锂合金层板单峰过载疲劳寿命性能对比研究

Contrast study on fatigue life performance of glass fiber reinforced Al-Li alloy laminates under unimodal overload

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