Preliminary Study on Broadband Resonance of Shaking Table Based on the Compressibility of Gas

作     者：Xinghua Zhou Xiao Sun Kehong Tang Lili Cheng Dingxuan Zhao 

作者机构：School of Mechanical Science and EngineeringJilin UniversityChangchun 130025China Institute of Applied TechnologyJilin UniversityChangchun 130012China College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China 

出 版 物：《Journal of Beijing Institute of Technology》 (北京理工大学学报（英文版）)

年 卷 期：2019年第28卷第2期

页      面：257-264页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：shaking table gas compressibility hydraulic variable stiffness broadband resonance 

摘      要：In order to improve the performance of the shaking table,a vibration-enhanced shaking table which exploited broadband resonance was constructed.The broadband resonance was realized by an adjustable stiffness mechanism which exploited gas compressibility.Different from the traditional device,a gas filled cylinder(GFC)was mounted between the shake table and the exciter,and a pressure regulator was designed to regulate the gas pressure of the GFC.The natural frequency of the designed shaking table can be adjusted based on the compressibility of gas during the test.The principle of stiffness adjustment was theoretically analyzed and a series of experiments were carried out to investigate the effects of regulating the natural frequency.The experimental results indicate that the amplitude can be twice amplified and the natural frequency can be regulated between 2 0 Hz and 6 0 Hz.