Stress Distribution of Steel Wire Braid Hydraulic Hose with Vibration of Foundation

doi:10.3901/JME.2018.01.066

Abstract

Abstract: The hydraulic hoses are largely used in the tunnel boring machine (TBM) hydraulic system, which are easily damaged parts in practice, resulting in the decrease of the security and reliability of the system. To achieve the distribution rule of stress on the hoses, the mathematical models for braiding hydraulic rubber hose in TBM that utilize classical laminate plate theory is described. The effects of oil pressure and vibration parameters on the life of hoses are analysed with simulation and experiment, and the results are as follows:firstly, the stress reaches its peak, and the vibration becomes obvious as well when the excitation frequency is close to the natural frequency of hose; secondly, the vibration of the hose grows stronger, while the stress decreases as the amplitude of the fundamental vibration goes up; thirdly, the maximum principal stress mutation of steel wire of hose will happen when the vibration acceleration reaches a certain value; fourthly, the oil pressure has less effect on the stress of steel layer of the hose.

Key words: braiding hydraulic hose, frequency resonance, laminate plate theory, stress distribution

CLC Number:

TH137

CHEN Duoyun, YANG Zhongjiong, ZHOU Liqiang, BAO Jie, LI Jun. Stress Distribution of Steel Wire Braid Hydraulic Hose with Vibration of Foundation[J]. Journal of Mechanical Engineering, 2018, 54(1): 66-73.

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