西南石油大学学报(自然科学版) ›› 2023, Vol. 45 ›› Issue (2): 159-169.DOI: 10.11885/j.issn.1674-5086.2020.10.22.03

• 石油机械与油田化学 • 上一篇    下一篇

考虑连接间隙磨损的水中浮体功能可靠性研究

何孔德1,2, 胡昊1,2, 方子帆1,2, 杨蔚华1,2, 刘绍鹏1,2   

  1. 1. 水电机械设备设计与维护湖北省重点实验室(三峡大学), 湖北 宜昌 443002;
    2. 三峡大学机械与动力学院, 湖北 宜昌 443002
  • 收稿日期:2020-10-22 发布日期:2023-05-05
  • 通讯作者: 刘绍鹏,E-mail:lspmgl@126.com
  • 作者简介:何孔德,1973年生,男,汉族,湖北宜昌人,副教授,博士,主要从事流固耦合方面和系统动力学的研究。E-mail:hekongde@ctgu.edu.cn
    胡昊,1998年生,男,汉族,湖北随州人,硕士研究生,主要从事流固耦合方面的研究。E-mail:1468030288@qq.com
    方子帆,1963年生,男,汉族,湖北黄冈人,教授,博士,主要从事振动利用工程和机械系统动力学的研究。E-mail:fzf@ctgu.edu.cn
    杨蔚华,1975年生,女,汉族,湖北长阳人,副教授,博士,主要从事多场耦合下的机电系统动力学及振动控制理论的研究。E-mail:ywhuactgu@126.com
    刘绍鹏,1976年生,男,汉族,湖北仙桃人,讲师,博士,主要从事机械设计及理论专业的研究。E-mail:lspmgl@126.com
  • 基金资助:
    国家自然科学基金(51775307,51875314)

A Study on the Functional Reliability of Underwater Floating Body Considering the Wear of Joint Clearance

HE Kongde1,2, HU Hao1,2, FANG Zifan1,2, YANG Weihua1,2, LIU Shaopeng1,2   

  1. 1. Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang, Hubei 443002, China;
    2. College of Mechanical & Power Engineering, China Three Gorges University, Yichang, Hubei 443002, China
  • Received:2020-10-22 Published:2023-05-05

摘要: 针对缆系式水中浮体系泊缆和结构体连接间隙磨损所带来的系统功能可靠性问题,基于Archard黏着磨损计算方法及可靠度计算方法,建立了考虑连接部位理想铰接及连接间隙磨损的系统动力学模型。利用多尺度法及Newmark-$\beta$方法分别进行了动力学方程的求解和功能可靠度的求解。在此基础上研究了纵荡位移和纵摇角度的可靠性,结果表明,随着磨损量的增加,连接接触力分别达到了理想铰接值的12.0倍和5.5倍;当磨损量大于1.5 mm时,浮体横摇角度的均值和峰值都要大于理想铰接状态,可靠度急剧降低,当间隙值大于1.82 mm时,可靠度小于90%;考虑连接磨损情况下浮体纵荡位移的可靠度会出现一定程度的降低,总体来讲变化不大,其位移的可靠性可以满足。

关键词: 缆系式, 水中浮体, 连接间隙, 磨损, 功能可靠性

Abstract: Aiming at the problem in system functional reliability caused by the wear of joint clearance between the cable and structure of cable-anchored underwater floating body, a system dynamic model considering the ideal hinge and the wear of joint clearance is established based on the method of Archard adhesion wear calculation and reliability calculation. The dynamic equation and the functional reliability are solved by the multi-scale method and Newmark-$\beta$ method. On this basis, the reliability of surging displacement and roll angle is studied. The results show that with the increase of wear, the contact force of the connection reaches 12.0 times and 5.5 times of the ideal hinge value. When the wear volume is greater than 1.5 mm, the mean value and peak value of the rolling angle of floating body caused by the uncertainty contact state are both greater than the ideal articulated state, and the reliability decreases sharply. When the wear volume is greater than 1.82 mm, the reliability is less than 90%. In the state of clearance contact, the reliability of the transverse surging displacement of the floating body will decrease to a certain extent.

Key words: cable-anchored, underwater floating body, joint clearance, wear, functional reliability

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