大型机载设备两级隔振系统的振动响应分析

IF 1.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Hongyan Zhu, Pengzhen Lv, Xiaochong Wu, Yuansheng Wang, Wei Liu, Huagang Lin, Zhufeng Yue
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引用次数: 0

摘要

目的提出一种适用于大型机载设备的两级隔振系统,用于隔离飞机振动载荷。设计/方法/途径首先,分析了大型机载设备离散模型在不同阻尼比、刚度比和质量比下的隔振规律,为建立大型机载设备三维实体模型提供了指导。随后,基于机载设备的三维模型分析了隔振传递效率,并研究了两级隔振系统在不同频率下的角振动和线性振动响应。最后,研究表明,非谐振频率下的稳态角振动变化很小。相反,谐振峰值处的最大角振动达到0.0033rad,至少是非谐振频率处响应的20倍。谐振频率下的线性振动至少是非谐振频率下响应的2.14倍。显然,线性振动的放大系数小于角振动,角振动对机载设备内部振动的影响最为显著。独创性/价值本文设计的两级隔振装置对大型机载设备的隔振设计具有积极的指导意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Vibration response analysis of a two-stage vibration isolation system for large airborne equipment
PurposeThis paper aims to propose a two-stage vibration isolation system for large airborne equipment to isolate aircraft vibration load.Design/methodology/approachFirst, the vibration isolation law of the discrete model of large airborne equipment under different damping ratios, stiffness ratios and mass ratios is analyzed, which guides the establishment of a three-dimensional solid model of large airborne equipment. Subsequently, the vibration isolation transfer efficiency is analyzed based on the three-dimensional model of the airborne equipment, and the angular and linear vibration responses of the two-stage vibration isolation system under different frequencies are studied.FindingsFinally, studies have shown that the steady-state angular vibration at the non-resonant frequency changes little. In contrast, the maximum angular vibration at the resonance peak reaches 0.0033 rad, at least 20 times the response at the non-resonant frequency. The linear vibration at the resonant frequency is at least 2.14 times the response at the non-resonant frequency. Obviously, the amplification factor of linear vibration is less than that of angular vibration, and angular vibration has the most significant effect on the internal vibration of airborne equipment.Originality/valueThe two-stage vibration isolation equipment designed in this paper has a positive guiding significance for the vibration isolation design of large airborne equipment.
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来源期刊
CiteScore
3.70
自引率
5.00%
发文量
60
期刊介绍: Multidiscipline Modeling in Materials and Structures is published by Emerald Group Publishing Limited from 2010
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