Page 4 - 《摩擦学学报》2021年第3期

第 41 卷 第 3 期 摩 擦 学 学 报 Vol 41 No 3
2021 年 5 月 Tribology May, 2021

DOI: 10.16078/j.tribology.2020138

大环径比O形金属橡胶密封件的疲劳力学

特性及试验研究

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陈祺鑫 , 黄 伟 , 任志英 , 杨洋洋 , 白鸿柏 , 尧杰程 1
(1. 福州大学 机械工程及自动化学院，福建 福州 350116;
2. 福建省特种设备检验研究院，福建 福州 350008)
摘 要: 金属橡胶内部线匝之间相互咬合钩联，形成非常复杂的空间网状结构，是一种累积损伤的材料，而金属橡胶
密封件除了内部线匝还有外包覆，因此常规金属疲劳理论无法适用. 以O形金属橡胶密封件作为研究对象，搭建疲
劳损伤试验，选取耗能ΔW，损耗因子η和损伤因子D作为疲劳损坏评判指标，开展大环径比O形金属橡胶密封件疲劳
寿命性能研究和疲劳寿命试验，采用控制变量法研究加载振幅、激振频率、孔隙度对金属橡胶疲劳磨损和疲劳寿命
的影响. 研究结果表明：金属橡胶密封件的迟滞回线呈现明显的“柳叶状”，并且在15万次振动周期前耗能能力有所
下降；金属橡胶密封件的刚度随着孔隙度的减小而增加，试验样件的疲劳损伤随着孔隙度的减小而增加；加载振幅
的增加会不同程度地加剧金属橡胶密封件的疲劳磨损，试验内容填补了O形金属橡胶密封件疲劳寿命性能研究的
空白，为金属橡胶密封件的疲劳寿命研究提供一定的基础.
关键词: 大环径比; 金属橡胶; 疲劳力学; 迟滞回线; 密封件
中图分类号: TH161.14 文献标志码: A 文章编号: 1004-0595(2021)03–0293–11

Fatigue Mechanical Characteristics and Experimental Study of
O-Shaped Metal Rubber Seals with Large Ring Diameter Ratio

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CHEN Qixin , HUANG Wei , REN Zhiying , YANG Yangyang , BAI Hongbai , YAO Jiecheng
(1. School of Mechanical Engineering and Automation, Fuzhou University, Fujian Fuzhou 350116, China
2. Fujian special equipment inspection and Research Institute, Fujian Fuzhou 350008, China)
Abstract: Metal rubber is a kind of cumulative damage material, because it has formed a very complex spatial network
structure, the metal wires occlude each other, extrusion, sliding friction. In addition to the internal wire, the metal rubber
seal has an outer covering, so the conventional metal fatigue theory can not be applied. In this paper, energy
consumption ΔW, loss factor η and damage factor D were selected as fatigue damage evaluation indexes, and fatigue life
test of O-shaped metal rubber seal with large ring diameter ratio was carried out through fatigue damage test. The effects
of loading amplitude, excitation frequency and porosity on fatigue life and wear of metal rubber were studied by control
variable method. The results showed that the hysteresis loop of the metal rubber seal was obviously “willow leaf”, and
the energy consumption capacity decreased before 150 000 vibration cycles. The stiffness of metal rubber seal increased
with the decrease of porosity, and the fatigue damage of test sample increased with the decrease of porosity. The

Received 1 July 2020, revised 15 September 2020, accepted 15 September 2020, available online 28 May 2021.
*Corresponding author. E-mail: renzyrose@126.com, Tel: +86-18960921872.
The project was supported by the National Natural Science Foundation of China (51805086,51975123) and the Natural Science
Foundation of Fujian Province, China (2019J01210) and the Fujian Province Health Education Joint Research Project, China(2019-
WJ-01).
国家自然科学基金项目(51805086,51975123)、福建省自然科学基金项目(2019J01210)和福建省卫生教育联合攻关计划项目
(2019-WJ-01)资助.