Analysis of influence of parameters of adhesive connection structure of gyroscope float assembly on static and dynamic performances

doi:10.3785/j.issn.1006-754X.2024.04.130

Chinese Journal of Engineering Design

2024, Vol. 31

Issue (5): 653-662 DOI: 10.3785/j.issn.1006-754X.2024.04.130

Tribology and Surface/Interface Technology

Analysis of influence of parameters of adhesive connection structure of gyroscope float assembly on static and dynamic performances

Guoliang GAO^1,²(

),Yiming JIA^1,²,Chaoshi WANG^1,²,Zhifu PAN^1,²,Chen WANG^1,²,Jun HONG^1,²,Qiyin LIN^1,²(

)

^1.School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
^2.Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an 710049, China

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Abstract

In order to reduce the assembly stress in the adhesive connection structure of high precision gyroscope float assembly and ensure the structural stability, the influence of the adhesive connection structural parameters on its static and dynamic properties was studied. The finite element model of the adhesive connection structure of the gyroscope float assembly was developed, and the uniformity of shear stress distribution and natural frequency were used to characterize the static and dynamic properties of the adhesive connection structure, and the influences of the adhesive layer thickness, adhesive layer length, buoy thickness and the adhesive layer shape on the static and dynamic properties of the structure were studied. The results showed that increasing the thickness and length of adhesive layer in a certain range and adopting parabolic adhesive layer could help to enlarge the advantageous bearing area of adhesive layer and improve the uniformity of stress distribution effectively. Additionally, reasonable increase of buoy thickness would decrease the first six natural frequencies of the adhesive connection structure with a greater reduction in higher orders. Conversely, the adhesive layer thickness had little influence on the dynamic property of adhesive connection structure. The research results have a certain guiding significance for the design and research of gyroscope components.

Key words： adhesive connection assembly structure assembly connecting surface static performance dynamic performance

Received: 07 April 2024 Published: 30 October 2024

CLC:

V 241.5

Corresponding Authors: Qiyin LIN E-mail: 1272997622@qq.com;linqiyin@xjtu.edu.cn

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	Guoliang GAO
	Yiming JIA
	Chaoshi WANG
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	Chen WANG
	Jun HONG
	Qiyin LIN

Cite this article:

Guoliang GAO,Yiming JIA,Chaoshi WANG,Zhifu PAN,Chen WANG,Jun HONG,Qiyin LIN. Analysis of influence of parameters of adhesive connection structure of gyroscope float assembly on static and dynamic performances. Chinese Journal of Engineering Design, 2024, 31(5): 653-662.

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https://www.zjujournals.com/gcsjxb/10.3785/j.issn.1006-754X.2024.04.130 OR https://www.zjujournals.com/gcsjxb/Y2024/V31/I5/653

陀螺仪浮子组件胶接结构参数对结构静动态性能影响分析

为了减小高精度陀螺仪浮子组件胶接结构的装配应力，保证结构的稳定性，开展了胶接结构参数对其静动态性能的影响研究。建立了陀螺仪浮子组件胶接结构的有限元模型，并分别以剪切应力分布的均匀性和固有频率作为胶接结构静态和动态性能的表征，研究了胶层厚度、胶层长度、浮筒厚度和胶层形状等对结构静态和动态性能的影响。研究结果表明：在一定范围内增大胶层厚度和长度，并采用抛物线形胶层有助于扩大胶层的优势承载区域，有效改善应力分布的均匀性；合理增大浮筒厚度能使胶接结构的前六阶固有频率下降，且阶数越大，下降幅度越大；胶层厚度对胶接结构动态性能的影响较小。研究结果对陀螺仪组件的设计和研究具有一定的指导意义。

关键词： 胶粘连接, 装配结构, 装配连接表面, 静态性能, 动态性能

Fig.1 Two-dimensional simplified model of single lap adhesive joint

Fig.2 Shear stress and stripping stress in adhesive layer of single lap adhesive joint

Fig.3 Structure of gyroscope float assembly

Fig.4 Schematic of two-dimensional simplified structure of gyroscope float assembly

Fig.5 Finite element models of adhesive connection structure and adhesive layer

Fig.6 Nephogram of shear stress distribution in adhesive layer

Fig.7 Variation curve of axial shear stress in adhesive layer

Fig.8 Variation curves of shear stress in adhesive layer with different adhesive layer thicknesses

Fig.9 Variation curves of extreme value and variance of shear stress in adhesive layer with different adhesive layer thicknesses

Table 1 Extreme values and variances of shear stress in adhesive layer with different adhesive layer thicknesses

Fig.10 Variation curves of shear stress in adhesive layer with different adhesive layer lengths

Fig.11 Variation curves of extreme value and variance of shear stress in adhesive layer with different adhesive layer lengths

Table 2 Extreme values and variances of shear stress in adhesive layer with different adhesive layer lengths

Fig.12 Variation curves of shear stress in adhesive layer with different buoy thicknesses

Fig.13 Variation curves of extreme value and variance of shear stress in adhesive layer with different buoy thicknesses

Table 3 Extreme values and variances of shear stress in adhesive layer with different buoy thicknesses

Fig.14 Schematic of adhesive layer shape

Fig.15 Variation curves of shear stress in adhesive layer with different adhesive layer shapes

Fig.16 Variation curves of extreme value and variance of shear stress in adhesive layer with different adhesive layer shapes

Table 4 Extreme values and variances of shear stress in adhesive layer with different adhesive layer shapes

Fig.17 Comparison of the first six natural frequencies of adhesive connection structure with different adhesive layer thicknesses

Fig.18 Change of first order natural frequency of adhesive connection structure with different adhesive layer thicknesses

Fig.19 Comparison of the first six natural frequencies of adhesive connection structure with different adhesive layer lengths

Fig.20 Change of first order natural frequency of adhesive connection structure with different adhesive layer lengths

Fig.21 Comparison of the first six natural frequencies of adhesive connection structure with different buoy thicknesses

Fig.22 Change of first order natural frequency of adhesive connection structure with different buoy thicknesses


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