两种橡胶型发动机隔振器动力特性试验研究
Experimental investigation on dynamic characteristics of two kinds of rubber engine vibration isolator
Received:May 08, 2017  Revised:July 30, 2017
DOI:10.7520/1001-4888-17-111
中文关键词:  发动机隔振器  苯基硅橡胶  动力特性  共振频率  传递率
英文关键词:aeroengine vibration isolator  phenyl silicon rubber  dynamic performance  resonant frequency  transmissibility
基金项目:
Author NameAffiliation
HANG Chao* Aeroengine Strength Laboratory, AVIC Aircraft Strength Research Institute, Xi'an 710065, China 
SU Er-dun Aeroengine Strength Laboratory, AVIC Aircraft Strength Research Institute, Xi'an 710065, China 
YAN Qun Aeroengine Strength Laboratory, AVIC Aircraft Strength Research Institute, Xi'an 710065, China 
HUANG Wen-chao Aeroengine Strength Laboratory, AVIC Aircraft Strength Research Institute, Xi'an 710065, China 
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中文摘要:
      对两种苯基硅橡胶材料的航空发动机隔振器的动力特性参数进行了试验研究。建立了试验测试方法的理论模型,分析了工程近似公式在计算隔振器动力特性参数时的误差,并给出了精确计算公式和迭代求解算法。用振动台扫频试验测得了两种隔振器系统常温下三个轴向的动刚度和阻尼比,以及两种隔振器在不同环境温度下X方向的动刚度和阻尼比。试验结果表明,常温下两种隔振器X方向的动刚度都远大于Y、Z方向的动刚度;随着环境温度的升高,两种隔振器X方向的动刚度都逐渐减小;加入阻尼助剂的改进型隔振器的动刚度和阻尼比都大于普通型隔振器。
英文摘要:
      Dynamic characteristic parameters of two kinds of phenyl silicone rubber vibration isolator in aeroengine were studied experimentally. Firstly, the theoretical model of experimental measurement method was established, and the error of engineering approximate formula used in dynamic characteristic parameters calculation of isolator was analyzed. The accurate formulas and iterative algorithm were given. The dynamic stiffness and damping ratio of two isolators were measured by sweep vibration method at room temperature along three axes, and the dynamic stiffness and damping ratios of two isolators along x direction and at different ambient temperatures were also measured by same method. Experimental results show that at room temperature, the dynamic stiffness of two isolators along x direction is much larger than that along y and z direction. With the increase of ambient temperature, the dynamic stiffness of two isolators along x direction decreases gradually. The dynamic stiffness and damping ratio of the improved isolator with damping additive are greater than that of ordinary isolator.
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