Analysis of random vibration response of inertial navigation vibration reduction system

IF 6 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY Ain Shams Engineering Journal Pub Date : 2024-07-17 DOI:10.1016/j.asej.2024.102956

Ping Wang , Guangpeng Zhang , Fei Wei

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Abstract

The substructure method based on the frequency response function is an effective method to solve the frequency response function of locally variable structure, which is especially suitable for the design of vibration absorber parameters in the inertial navigation vibration reduction system. In this paper, one inertial navigation vibration reduction system was taken as an example, and its random dynamic response model was established by using the substructure method based on the frequency response function. Then the influence of the variation of the stiffness and damping parameters of the vibration absorber on the random vibration response of the system was analyzed. The results showed that: (1) it is difficult to effectively reduce the vibration response of inertial navigation vibration reduction system by simply changing the axial stiffness of the vibration absorber, but probably increasing the response in other directions; (2) the vibration response of the inertial navigation vibration reduction system will decrease with the increase of damping, which indicates that the response of the inertial vibration reduction system mainly includes medium and low frequency. The numerical example shows that the proposed method is suitable for the optimization of vibration absorber parameters in the inertial navigation system.

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惯性导航减震系统的随机振动响应分析

基于频响函数的子结构法是求解局部可变结构频响函数的有效方法，尤其适用于惯性导航减振系统中减振器参数的设计。本文以某惯性导航减震系统为例，采用基于频响函数的子结构法建立了其随机动态响应模型。然后分析了减震器刚度和阻尼参数的变化对系统随机振动响应的影响。结果表明(1）单纯改变减振器的轴向刚度难以有效降低惯性导航减振系统的振动响应，但可能会增加其他方向的响应；（2）惯性导航减振系统的振动响应会随着阻尼的增加而减小，这表明惯性导航减振系统的响应主要包括中低频。数值实例表明，所提出的方法适用于惯性导航系统中减振器参数的优化。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.