基于非成型向金属橡胶的管路吊架减振性能研究

管路系统减振是保证舰艇整机系统正常工作的必要前提,本文利用金属橡胶非成型方向具有很好的刚度、耐腐蚀性、又具有一定阻尼等特性。以其为承载主体,设计出一款应用于舰艇大质量管路减振的新型吊架减振器。基于双折线本构关系,用等效线性化方法建立吊架减振器的动力学模型。采用正弦激励加载试验,研究了不同激振力、不同阻尼元件密度、不同预紧间距以及不同布置方式对新型减振器减振效果的影响。根据预紧间距和布置方式的试验情况对减振器结构设计和实际安装进一步优化。试验发现,激振力对减振性能影响效果显著,减振性能随着激振力的增加而增加,随阻尼元件密度增加而降低,随预紧间距减小而降低。研究结果对舰艇管路系统减振工程应用提供了理论指导和实验依据。

Research on Vibration Damping Performance of Pipeline Hanger Based on Non-forming Direction Metal Rubber

Pipeline vibration reduction is a necessary prerequisite to ensure the normal operation of the whole ship system. A new type of hanger damper applied to the heavy-duty pipeline vibration reduction of naval ships is designed by taking advantage of the characteristics of metal rubber non-forming direction, such as good stiffness, corrosion resistance and certain damping. Based on the constitutive relation of double broken lines, the dynamic model of suspension damper is established by equivalent linearization method. Using sinusoidal excitation loading test, the influence of different excitation force, different component density, different preload spacing and different arrangement on the vibration reduction effect of the new damper was studied. According to the test results of preload spacing and arrangement, the structural design and actual installation of damper are further optimized. It is found that the effect of exciting force on vibration reduction performance is remarkable. The damping performance increases with the increase of the exciting force, decreases with the increase of the density of the damping elements, and decreases with the decrease of the preload spacing. the research results provide theoretical guidance and experimental basis for the application of vibration reduction engineering in ship piping system.