随机振动环境下液压直管道设计方法

doi:10.13229/j.cnki.jdxbgxb20200321

Abstract

Abstract:

For reducing the impact of random vibration generated by Tunnel Boring Machine (TBM) on the displacement and stress of hydraulic straight pipe in its hydraulic system, a design model of hydraulic straight pipe under random vibration environment was established, and the correctness of the model was verified by experiments. The influences of pipeline structural parameters on the stress response and displacement response of hydraulic straight pipeline were analyzed. It is found that the stress response and displacement response of hydraulic straight pipe change with pipe diameter and pipe length in the opposite direction. The multi-objective optimization algorithm based on genetic algorithm was adopted to optimize the structural parameters of the fixed-supported hydraulic straight pipeline at both ends under the random vibration environment. The stress response and displacement response of the pipeline before and after the design were compared and analyzed. The results show that the mean square value of the maximum displacement of the pipeline after the design was reduced by about 16.21% and the mean square value of the maximum stress was reduced by 21.04%. The research results could provide a theoretical basis for the design and selection of vibration resistance of hydraulic pipeline in random vibration environment.

Key words: hydraulic straight pipe, fluid-solid interaction, random vibration, optimization design

CLC Number:

TH137.5

Wei LI,Huai-liang ZHANG,Wei QU. Design method of hydraulic straight pipe under random vibration[J].Journal of Jilin University(Engineering and Technology Edition), 2021, 51(4): 1222-1229.

Figures/Tables 9

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参数名称	数值	参数名称	数值
管道内径d/m	0.019	泊松比μ	0.3
管壁厚度δ/m	0.003	管道外径D/m	0.025
流体平均流速v /（m·s^-1）	5	流体平均压力p/Pa	2×10⁷
管道支撑间距L/m	1	管道密度ρ_p /（kg·m^-3）	7850
管道弹性模量 E/Pa	2.01×10¹¹	流体密度ρ_f /（kg·m^-3）³	890

Design method of hydraulic straight pipe under random vibration

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