金属橡胶减振及密封构件的设计与应用

发布时间：2018-04-13 04:31

本文选题：金属橡胶 + 压缩模型　；参考：《哈尔滨工程大学》2013年硕士论文

【摘要】：金属橡胶是由金属丝按照一定规则编织缠绕后通过冷冲压而制成具有橡胶般弹性的金属构件，由于其具有适应恶劣环境、可设计性强、减振降噪、密封节流等诸多优点而广泛应用于航空、航天、舰船等工程领域。自问世以来，国内外的学者对其进行了大量的研究，但是由于金属橡胶制作工艺的差异性，造成其适用性的不同。本文结合具体的项目指标，完成了金属橡胶隔振器和密封圈的制造，并对其进行了测试分析。具体内容如下： 1.以圆环形金属橡胶为研究对象，通过对其成型制造过程的分析，提出了一种新的压缩计算模型，结合现有理论，推导了压缩载荷状态下的计算方程。同时对几种圆环形金属橡胶进行了压缩实验，通过实验数据确定方程的系数并验证计算方程的准确性。 2.对金属橡胶隔振器进行了静态压缩实验和相应的振动实验。首先进行静态压缩实验，得到金属橡胶的预压缩量对其隔振器的性能影响。其次以确定预压缩量的金属橡胶隔振器为研究对象，进行扫频振动实验，得到相应的幅频特性曲线。最后通过固有频率下的正弦振动实验，确定该频率下金属橡胶的传递率和阻尼比，分析了不同参数的试件的振动特性。 3.基于金属橡胶得到的实验数据，，验证了BLATA-KO橡胶模型替代金属橡胶隔振器的可行性。然后进行装甲车车厢跌落的有限元仿真分析，观察金属橡胶的减振隔冲应用效果；通过车箱箱体跌落的加速度云图分析和加速度变化曲线的对比，证明了金属橡胶在工程中具有良好的减振隔冲作用。 4.对金属橡胶密封圈的制备工艺进行研究，成功解决了制备过程中的一系列问题。通过密封圈密封机理的研究，结合密封圈的实际工作情况，得到了端面密封的计算公式，分析了端面密封过程中泄漏量的主要影响因素。按照端面密封的情况，设计了一套密封测试装置，并通过该装置验证了金属橡胶密封圈的密封性能。
[Abstract]:Metal rubber is a kind of metal component with rubber elasticity made from wire braiding and winding according to certain rules by cold stamping. Because of its adaptability to harsh environment, it can be designed strongly, and can reduce vibration and noise.Sealing throttling and many other advantages are widely used in aviation, aerospace, ships and other engineering fields.Since its emergence, scholars at home and abroad have done a lot of research on it, but due to the difference of metal rubber manufacturing technology, its applicability is different.In this paper, the metal rubber vibration isolator and seal ring are manufactured and tested.The details are as follows:1.Based on the analysis of the forming process of circular metal rubber, a new compression calculation model is put forward, and the calculation equation under compression load is deduced combining with the existing theory.At the same time, the compression experiments of several kinds of circular metal rubber were carried out. The coefficients of the equation were determined by the experimental data and the accuracy of the calculation equation was verified.2.The static compression experiment and the corresponding vibration experiment of metal rubber isolator are carried out.Firstly, the static compression experiment was carried out to get the effect of precompression shrinkage on the performance of the vibration isolator of metal rubber.Secondly, taking the metal rubber vibration isolator with certain precompression shrinkage as the research object, the sweep frequency vibration experiment is carried out, and the corresponding amplitude-frequency characteristic curve is obtained.Finally, the transfer rate and damping ratio of metal rubber are determined by sinusoidal vibration experiments at natural frequency, and the vibration characteristics of the specimens with different parameters are analyzed.3.Based on the experimental data obtained from metal rubber, the feasibility of replacing metal rubber isolator with BLATA-KO rubber model is verified.Then the finite element simulation analysis of the fall of armored car car is carried out to observe the effect of vibration absorption and shock isolation of metal rubber, and through the analysis of acceleration cloud diagram and the comparison of acceleration variation curve,It is proved that metal rubber has good vibration and shock isolation in engineering.4.The preparation process of metal rubber seal ring was studied and a series of problems were solved successfully.Based on the study of sealing mechanism and the actual working conditions of seal ring, the calculation formula of end face seal is obtained, and the main influencing factors of leakage amount in the process of end face seal are analyzed.According to the condition of end face seal, a set of sealing test device is designed, and the sealing performance of metal rubber seal ring is verified by this device.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TB535.1

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