螺钉连接结构的微振动传递刚度特性研究
详细信息 查看官网全文
- 英文论文题名：Stiffness Charateristics of bolted joints in micro-vibration transmission
- 论文作者：申加康 ; 陈明明 ; 周春燕
- 英文论文作者：SHEN Jiakang ; CHEN Mingming ; ZHOU Chunyan ; School of Aerospace Engineering ; Beijing Institute of Technology
- 年：2016
- 作者机构：北京理工大学宇航学院;
- 论文关键词：螺钉连接 ; 微振动 ; 刚度 ; 阻尼
- 英文论文关键词：bolted connections ; micro-vibration ; natural frequency ; stiffness ; damping
- 会议召开时间：2016-07-28
- 会议录名称：第二十七届全国振动与噪声应用学术会议论文集
- 语种：中文
- 分类号：V414
- 学会代码：ZDZD
- 会议名称：第二十七届全国振动与噪声应用学术会议
- 会议地点：中国黑龙江哈尔滨
- 主办单位：中国振动工程学会振动与噪声控制专业委员会
- 学会名称：中国振动工程学会振动与噪声控制专业委员会
- 页数：6
- 文件大小：352k
- 原文格式：D
- 会议级别：全国
摘要
在轨微振动会严重影响高精度航天器的正常工作,由于不能准确估计螺钉连接结构的刚度,目前对于航天结构的微振动固有频率和传递函数计算存在较大误差。本文以螺钉连接结构为研究对象,通过实验研究了不同接触面粗糙度、不同拧紧力矩下的螺钉连接结构的微振动传递特性规律。之后采用Greenwood-Williamson模型、Chang-Etsion-Bogy模型和Krolikowski-Szczepek模型求得连接结构的等效刚度,并通过仿真,将仿真结果与实验结果对比,验证了以上接触理论在设计的螺钉连接结构试件上的适用性。
Micro-vibration will seriously affect attitude pointing accuracy and stability of the spacecraft during normal movement,such as to affect the normal performance of certain high-precision equipments.As an important connection method in spacecraft,bolted joint has an important influence on the micro-vibration transmission of the spacecraft.Therefore,the mechanism of micro-vibration transmission in bolted joint was studied.The present paper summarizes the theoretical model of contact surfaces,includingGreenwood-Williamsonmodel,Chang-Etsion-Bogymodeland Krolikowski-Szczepek model.According to the contact surface topography parameters of the specimens,as well as the theoretical contacts models,the contact stiffness of the bolted surfaces can be obtained.We set material parameters of the thin layer according to the contact stiffness of the specimens,then the natural frequencies of the models are obtained by finite element calculations.The micro-vibration test of bolted joint.Specimen’s natural frequency and damping ratio were then measured with sinusoidal sweep test method or FRF method.Specimens were divided into control and experimental groups.The applicability of theoretical models are verified by comparison between natural frequencies obtained by simulation and by experiments.
Micro-vibration will seriously affect attitude pointing accuracy and stability of the spacecraft during normal movement,such as to affect the normal performance of certain high-precision equipments.As an important connection method in spacecraft,bolted joint has an important influence on the micro-vibration transmission of the spacecraft.Therefore,the mechanism of micro-vibration transmission in bolted joint was studied.The present paper summarizes the theoretical model of contact surfaces,includingGreenwood-Williamsonmodel,Chang-Etsion-Bogymodeland Krolikowski-Szczepek model.According to the contact surface topography parameters of the specimens,as well as the theoretical contacts models,the contact stiffness of the bolted surfaces can be obtained.We set material parameters of the thin layer according to the contact stiffness of the specimens,then the natural frequencies of the models are obtained by finite element calculations.The micro-vibration test of bolted joint.Specimen’s natural frequency and damping ratio were then measured with sinusoidal sweep test method or FRF method.Specimens were divided into control and experimental groups.The applicability of theoretical models are verified by comparison between natural frequencies obtained by simulation and by experiments.
引文
[1]Eyerman C E.A systems engineering approach to disturbance minimization for spacecraft utilizing controlled structures technology[D].Massachusetts Institute of Technology,1990.
[2]Roberto U,Flavia M.Artemis micro-vibration environment prediction[C]//Spacecraft structures,Materials and mechanical testing,Proceedings of a European Conference held at Braunschweig,Germany.1998,4(6).
[3]Gaul L,Nitsche R.The role of friction in mechanical joints[J].Applied Mechanics Reviews,2001,54(2):93-106.
[4]Beards C F.The damping of structural vibration by controlled interfacial slip in joints[J].Journal of Vibration,Acoustics,Stress,and Reliability in Design,1983,105(3):369-373.
[5]Greenwood J A,Williamson J B P.Contact of nominally flat surfaces[C]//Proceedings of the Royal Society of London A:Mathematical,Physical and Engineering Sciences.The Royal Society,1966,295(1442):300-319.
[6]Chang W R,Etsion I,Bogy D B.An elastic-plastic model for the contact of rough surfaces[J].Journal of tribology,1987,109(2):257-263.
[7]Krolikowski J,Szczepek J,Witczak Z.Ultrasonic investigation of contact between solids under high hydrostatic pressure[J].Ultrasonics,1989,27(1):45-49.
[8]Królikowski J,Szczepek J.Assessment of tangential and normal stiffness of contact between rough surfaces using ultrasonic method[J].Wear,1993,160(2):253-258.
[9]Krolikowski J,Szczepek J.Prediction of contact parameters using ultrasonic method[J].Wear,1991,148(1):181-195.
[2]Roberto U,Flavia M.Artemis micro-vibration environment prediction[C]//Spacecraft structures,Materials and mechanical testing,Proceedings of a European Conference held at Braunschweig,Germany.1998,4(6).
[3]Gaul L,Nitsche R.The role of friction in mechanical joints[J].Applied Mechanics Reviews,2001,54(2):93-106.
[4]Beards C F.The damping of structural vibration by controlled interfacial slip in joints[J].Journal of Vibration,Acoustics,Stress,and Reliability in Design,1983,105(3):369-373.
[5]Greenwood J A,Williamson J B P.Contact of nominally flat surfaces[C]//Proceedings of the Royal Society of London A:Mathematical,Physical and Engineering Sciences.The Royal Society,1966,295(1442):300-319.
[6]Chang W R,Etsion I,Bogy D B.An elastic-plastic model for the contact of rough surfaces[J].Journal of tribology,1987,109(2):257-263.
[7]Krolikowski J,Szczepek J,Witczak Z.Ultrasonic investigation of contact between solids under high hydrostatic pressure[J].Ultrasonics,1989,27(1):45-49.
[8]Królikowski J,Szczepek J.Assessment of tangential and normal stiffness of contact between rough surfaces using ultrasonic method[J].Wear,1993,160(2):253-258.
[9]Krolikowski J,Szczepek J.Prediction of contact parameters using ultrasonic method[J].Wear,1991,148(1):181-195.