树脂基复合材料环形减振器设计及实验研究

Design and Experimental Research of Isolator Ring Made of Resin-based Composite Material

为了满足航空航天等特殊环境阻尼减振的需要,利用树脂基复合材料质量轻、比强度和比模量高、力学性能具有可设计性等特点,开发研制了树脂基复合材料环形减振器,揭示了减振机理,设计了减振器结构,对影响减振器性能的主要几何参数和性能指标进行了动静态实验研究。获得了该减振器的弹性迟滞回线和最大振动应力幅值,为实际应用提供了理论依据。研究结果表明:该减振器具有良好的减振性能,改变其纤维走向、减振环数量及主要几何参数,可以使减振器具有不同性能,以满足不同工况的需要。

To meet the needs of decreasing vibration in aerospace environment, the advantages of composite material, such as lightweight, high density and modulus, designable mechanical characteristics, are used to develop isolation ring. The mechanism of isolation and the structure of isolator is researched, and several structural parameters and performance criterion of isolator are studied experimentally. The hysteresis loop and maximal dynamic stress are obtained, they provided the theoretical basis for practical application. Results showed that this kind of isolator has good isolation performance. The changes of the distribution of fibers, the numbers of rings and main geometric parameters can improve the damping characteristics of isolator and can meet the needs of different conditions.