卫星运输包装箱用动力吸振器的减振特性研究
发布时间：2018-12-11 00:45
【摘要】：卫星包装箱运输过程中要经历海运,陆运和空运,其中公路运输是三种运输环境中振幅最大的环境,当外界激励频率和卫星-包装箱的某一阶固有频率相等时,会出现共振,共振会影响卫星上某些部件的使用寿命,造成疲劳破坏,而卫星包装箱系统的固有频率较难调整,因此本文针对这一问题采用外加动力吸振器的方法减振,对卫星运输包装箱用动力吸振器进行减振特性分析和试验,同时对两自由度动力吸振器的理论进行了推导,分析和参数优化。针对无阻尼单自由度动力吸振器理论,分析了质量比和频率比对次级共振频率的影响。提出了当被减振系统被等效为单自由度系统时,求解被减振系统等效质量的方法。提出了针对动力吸振器参数的数值优化方法。根据这种优化方法得出了质量比和对应最优频率比,最优阻尼比之间的关系,并且得出了单自由度吸振器质量比对最优减振效果的影响规律。建立了包装箱-卫星有限元模型,进行了模态分析,得出了对包装箱-卫星模型影响最大的模态阵型和对应的模态频率。对动力吸振器的安装位置进行分析,确定了动力吸振器的最终安装位置,对动力吸振器的质量进行分析,确定了动力吸振器的质量,并针对频率和阻尼进行仿真分析,确定了频率和阻尼的取值范围,为动力吸振器的试验和设计提供了指导。推导了两种形式的两自由度动力吸振器被减振系统的幅值表达式,总结了各参数对被减振系统幅值的影响规律,发现了两自由度吸振器的不动点规律。对两自由度动力吸振器的各参数进行了数值优化,并将减振效果和单自由度动力吸振器的减振效果进行了对比,结果表明两自由度动力吸振器能比单自由度动力吸振器取得更好的减振效果。将两自由度动力吸振器运用到了卫星运输包装箱的减振系统的减振特性分析中。根据减振特性分析的结论对拉伸型和压缩型钢丝绳动力吸振器进行试验,总结出了钢丝绳隔振器各参数在试验条件下的变化规律及在动力吸振器设计方面的可行性。针对模具弹簧设计了在无阻尼条件下的动力吸振器试验,总结出了模具弹簧这一弹性元件各参数在试验条件下的变化规律。针对金属橡胶和硅胶垫片这两种阻尼元件和模具弹簧,钢板质量块组合设计了动力吸振器,测试并总结了各阻尼元件的参数变化规律。根据分析和试验为卫星包装箱设计了动力吸振器。
[Abstract]:In the process of satellite packing box transportation, there are sea, land and air transportation. Among them, road transport is the environment with the largest amplitude of the three transport environments. When the external excitation frequency is equal to the natural frequency of a certain order of the satellite-packaging system, resonance will occur. Resonance will affect the service life of some components on the satellite and cause fatigue damage, while the natural frequency of the satellite packing box system is difficult to adjust. Therefore, the method of external dynamic vibration absorber is used to reduce the vibration in this paper. The vibration absorption characteristics of the dynamic vibration absorber used in the satellite transportation package are analyzed and tested. The theory of the dynamic vibration absorber with two degrees of freedom is deduced, analyzed and optimized. Based on the theory of undamped single degree of freedom dynamic vibration absorber, the influence of mass ratio and frequency ratio on the secondary resonance frequency is analyzed. A method for solving the equivalent mass of the damped system is presented when the system is equivalent to a single-degree-of-freedom system. A numerical optimization method for dynamic vibration absorber parameters is proposed. According to this optimization method, the relationship between the mass ratio, the corresponding optimal frequency ratio and the optimal damping ratio is obtained, and the influence of the mass ratio of the single degree of freedom absorber on the optimal damping effect is obtained. The finite element model of package box and satellite is established and the modal analysis is carried out. The modal formation and corresponding modal frequency which have the greatest influence on the package box satellite model are obtained. The installation position of the dynamic vibration absorber is analyzed, the final installation position of the dynamic vibration absorber is determined, the quality of the dynamic vibration absorber is analyzed, the quality of the dynamic vibration absorber is determined, and the simulation analysis of frequency and damping is carried out. The range of frequency and damping is determined, which provides guidance for the test and design of dynamic vibration absorber. The amplitude expressions of two kinds of dynamic vibration absorbers with two degrees of freedom are derived. The influence of each parameter on the amplitude of the system is summarized, and the fixed point law of the vibration absorber with two degrees of freedom is found. The parameters of the dynamic vibration absorber with two degrees of freedom are numerically optimized, and the damping effect is compared with that of the single degree of freedom dynamic vibration absorber. The results show that the dynamic vibration absorber with two degrees of freedom is more effective than the dynamic vibration absorber with one degree of freedom. The dynamic vibration absorber with two degrees of freedom is applied to the analysis of the vibration absorption characteristics of the vibration absorption system of the satellite transportation package box. According to the conclusion of vibration absorption characteristic analysis, the dynamic vibration absorber of tension type and compression type steel wire rope is tested, and the variation law of the parameters of the vibration isolator of steel wire rope under the test conditions and the feasibility of the design of dynamic vibration absorber are summarized. The dynamic vibration absorber test of die spring under undamped condition is designed, and the variation law of the parameters of die spring, an elastic element, under the test condition is summarized. A dynamic vibration absorber is designed for metal rubber and silicone gasket as well as die spring and steel plate mass block. The parameters of each damping element are tested and summarized. According to the analysis and test, the dynamic vibration absorber is designed for the satellite packing box.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB535.1
本文编号：2371535
[Abstract]:In the process of satellite packing box transportation, there are sea, land and air transportation. Among them, road transport is the environment with the largest amplitude of the three transport environments. When the external excitation frequency is equal to the natural frequency of a certain order of the satellite-packaging system, resonance will occur. Resonance will affect the service life of some components on the satellite and cause fatigue damage, while the natural frequency of the satellite packing box system is difficult to adjust. Therefore, the method of external dynamic vibration absorber is used to reduce the vibration in this paper. The vibration absorption characteristics of the dynamic vibration absorber used in the satellite transportation package are analyzed and tested. The theory of the dynamic vibration absorber with two degrees of freedom is deduced, analyzed and optimized. Based on the theory of undamped single degree of freedom dynamic vibration absorber, the influence of mass ratio and frequency ratio on the secondary resonance frequency is analyzed. A method for solving the equivalent mass of the damped system is presented when the system is equivalent to a single-degree-of-freedom system. A numerical optimization method for dynamic vibration absorber parameters is proposed. According to this optimization method, the relationship between the mass ratio, the corresponding optimal frequency ratio and the optimal damping ratio is obtained, and the influence of the mass ratio of the single degree of freedom absorber on the optimal damping effect is obtained. The finite element model of package box and satellite is established and the modal analysis is carried out. The modal formation and corresponding modal frequency which have the greatest influence on the package box satellite model are obtained. The installation position of the dynamic vibration absorber is analyzed, the final installation position of the dynamic vibration absorber is determined, the quality of the dynamic vibration absorber is analyzed, the quality of the dynamic vibration absorber is determined, and the simulation analysis of frequency and damping is carried out. The range of frequency and damping is determined, which provides guidance for the test and design of dynamic vibration absorber. The amplitude expressions of two kinds of dynamic vibration absorbers with two degrees of freedom are derived. The influence of each parameter on the amplitude of the system is summarized, and the fixed point law of the vibration absorber with two degrees of freedom is found. The parameters of the dynamic vibration absorber with two degrees of freedom are numerically optimized, and the damping effect is compared with that of the single degree of freedom dynamic vibration absorber. The results show that the dynamic vibration absorber with two degrees of freedom is more effective than the dynamic vibration absorber with one degree of freedom. The dynamic vibration absorber with two degrees of freedom is applied to the analysis of the vibration absorption characteristics of the vibration absorption system of the satellite transportation package box. According to the conclusion of vibration absorption characteristic analysis, the dynamic vibration absorber of tension type and compression type steel wire rope is tested, and the variation law of the parameters of the vibration isolator of steel wire rope under the test conditions and the feasibility of the design of dynamic vibration absorber are summarized. The dynamic vibration absorber test of die spring under undamped condition is designed, and the variation law of the parameters of die spring, an elastic element, under the test condition is summarized. A dynamic vibration absorber is designed for metal rubber and silicone gasket as well as die spring and steel plate mass block. The parameters of each damping element are tested and summarized. According to the analysis and test, the dynamic vibration absorber is designed for the satellite packing box.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB535.1
【参考文献】
相关期刊论文 前10条
1 张盛;陈天星;黄道军;;一款动力吸振器的匹配设计与试验[J];现代制造工程;2016年03期
2 郭有松;李超;王德禹;张敏;;军用船舶动力吸振器性能与参数优化研究[J];舰船科学技术;2014年07期
3 杨志荣;秦春云;饶柱石;塔娜;;船舶推进轴系纵振动力吸振器设计及参数影响规律研究[J];振动与冲击;2012年16期
4 刘剑峰;;动力吸振器在农用机械悬架系统振动控制中的应用[J];农机化研究;2012年08期
5 李勇;顾彦;靳春梅;;汽车动力吸振器优化设计[J];噪声与振动控制;2011年06期
6 李晓勇;浣石;蒋国平;陶为俊;;连续悬臂梁动力吸振器的模型研究[J];水电能源科学;2011年02期
7 魏榕祥;陈国平;黄瑞泉;苏开鑫;;动力吸振器抑制某型飞机平尾振动的设计与试验研究[J];南京航空航天大学学报;2010年03期
8 刘耀宗;郁殿龙;赵宏刚;温熙森;;被动式动力吸振技术研究进展[J];机械工程学报;2007年03期
9 王全娟,陈家义,李伟华,许华;动力吸振器优化设计的功率流控制策略[J];振动工程学报;2001年04期
10 李俊,金咸定;动力吸振器的宽带数值优化设计[J];振动与冲击;2001年02期
相关硕士学位论文 前2条
1 何山;动力吸振器的设计方法研究及其在汽车减振降噪中的应用[D];华南理工大学;2014年
2 郝帅瀛;轿车悬架动力吸振器设计与匹配[D];吉林大学;2011年
，本文编号：2371535
本文链接：https://www.wllwen.com/guanlilunwen/gongchengguanli/2371535.html
