Vibration suppressing study of a simplified floating raft system by mixing using a nonlinear connecting intercalary plate and connecting nonlinear oscillators

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2024-11-08 DOI:10.1016/j.tws.2024.112686

Qingchuan Zhan , Yilin Chen , Yuhao Zhao , Mingfei Chen , Rongshen Guo

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引用次数: 0

Abstract

To study the potential application of the mixing nonlinear vibration suppression of the floating raft system, a hybrid vibration control model of the simplified floating raft system with the nonlinear connecting intercalary plate (NCIP) and connecting nonlinear oscillators (CNOs) is established. Based on the correct dynamic behavior of the simplified floating raft system with the NCIP and CNOs, the vibration-suppressing characteristics and vibration-suppressing effect of the simplified floating raft system by mixing using the NCIP and CNOs are deeply studied and discussed. It can be found that the mixing use of the NCIP and CNOs can combine their advantages in an attractive way. The working states of the mixing use of the NCIP and CNOs are divided into linear and non-linear multiple frequency bands synchronously suppressing states, where the vibration island phenomenon is a sign of the NCIP and CNOs work on the non-linear state. Besides, the vibration of the simplified floating raft system under resonance regions can be suppressed at an attractive level, where the best vibration-suppressing ratios for single resonance regions and multiple resonance regions of the simplified floating raft system can be reached by selecting suitable stiffness parameter combinations of the NCIP and CNOs. Overall, the global vibration of the simplified floating raft system within a targeted frequency band can be suppressed synchronously and effectively by reasonable mixing use of the NCIP and CNOs, which play a potential role in the engineering application of strengthening the vibration-suppressing effect of floating raft systems in marine engineering.

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通过混合使用非线性连接插板和连接非线性振荡器对简化浮筏系统进行振动抑制研究

为了研究混合非线性振动抑制浮筏系统的潜在应用，建立了简化浮筏系统与非线性连接插板（NCIP）和连接非线性振荡器（CNOs）的混合振动控制模型。在研究了带有 NCIP 和 CNO 的简化浮筏系统的正确动态行为的基础上，深入研究和讨论了混合使用 NCIP 和 CNO 的简化浮筏系统的抑振特性和抑振效果。研究发现，NCIP 和 CNO 的混合使用能很好地结合两者的优势。混合使用 NCIP 和 CNO 的工作状态分为线性和非线性多频带同步抑制状态，其中振动岛现象是 NCIP 和 CNO 工作于非线性状态的标志。此外，简化浮筏系统在共振区下的振动可以得到有吸引力的抑制，通过选择合适的 NCIP 和 CNO 的刚度参数组合，可以达到简化浮筏系统单共振区和多共振区的最佳抑振比。总体而言，通过合理混合使用 NCIP 和 CNO，可同步有效地抑制简化浮筏系统在目标频段内的全局振动，在海洋工程中加强浮筏系统抑振效果的工程应用中发挥了潜在作用。

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.