A probe into life of hydraulic rubber hose in strong vibration environment

被引：0
|
作者：
Yang Z.-J. [1 ,2 ]
Gao Y. [2 ]
Zhou L.-Q. [1 ,2 ]
Wang H. [2 ]
机构：
[1] State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha, 410083, Hunan
[2] College of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, Hunan
来源：
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | 2016年 / 44卷 / 07期
关键词：
Amplitude; Excitation frequency; Fatigue life; Hydraulic rubber hose; Maximum principal stress; Vibration load;
D O I：
10.3969/j.issn.1000-565X.2016.07.003
中图分类号：
学科分类号：
摘要：
In the process of rock cutting using hard-rock tunnel boring machines, vibration loads may occur, and alternating stress may load on hydraulic rubber hose under the action of vibration load and internal pressure. When the alternating stress exceeds the fatigue limit, fatigue damage may occur. In this paper, on the basis of composite material mechanics and materials mechanics, a mathematical model of hydraulic rubber hose is established. Then, the effects of vibration parameters, oil pressure and hose structure parameters on the life of hose are analyzed through simulation and experiments. The results show that (1) when the excitation frequency of vibration load is close to hose's natural frequency, the hose life reaches the minimum; (2) with the increase of vibration load amplitude, the life of rubber hose decreases; (3) at a middle-lower pressure, the change of oil pressure has little effect on the stress loaded on steel wire; and (4) bigger bending radius of hose may result in lower stress. © 2016, Editorial Department, Journal of South China University of Technology. All right reserved.
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页码：15 / 21
页数：6
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