Nonlinear dynamic characteristic analysis of pre-stressed hydraulic composite pipe subjected to random vibration

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-04-04 DOI:10.1016/j.tws.2025.113249

Wei Qu , Zequn Jiang , Zhenzhao He , Han Ding , Hui Yu

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Abstract

This paper studies the nonlinear dynamic characteristics of pre-stressed hydraulic composite pipe subjected to random vibration. The steel wire-wound pre-stressed hydraulic composite pipe is modeled as a vibration nonlinear system by adopting the Hamiltonian principle. Its dynamic motion equation, considering geometric nonlinearity and random vibration of foundation, is solved by the Time Domain Explicit Iterative Algorithm (TDEIA) which is proposed upon Newmark-β Integral Scheme. The impacts of the pre-stress and other main parameters on the mean peak response of the pipe are also analyzed. The validity of this method is verified by the nonlinear Newmark-β method. The obtained results show that the pre-tensile stress of the steel wire can hinder the pipe vibration. Moreover, the average response of displacement and velocity at the middle point of the pipe and the average response of stress at its support are the peak values. And the method provides a theoretical basis for the design and selection of pre-stressed hydraulic composite pipes subjected to random vibration.

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随机振动下预应力液压复合管道的非线性动力特性分析

本文研究了预应力液压复合管在随机振动作用下的非线性动态特性。采用哈密顿原理将钢丝缠绕预应力水工复合管模拟为振动非线性系统。在考虑几何非线性和地基随机振动的情况下，采用基于 Newmark-β 积分方案的时域显式迭代算法（TDEIA）求解其动态运动方程。同时还分析了预应力和其他主要参数对管道平均峰值响应的影响。非线性 Newmark-β 方法验证了该方法的有效性。结果表明，钢丝的预拉伸应力会阻碍管道振动。此外，管道中点的位移和速度平均响应及其支撑处的应力平均响应均为峰值。该方法为设计和选择承受随机振动的预应力液压复合管提供了理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.