阻塞性活塞式颗粒阻尼器阻尼特性研究
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摘要
提出了一种新型阻塞性活塞式颗粒阻尼器,建立该颗粒阻尼器阻尼力理论模型,并运用LMS Test. Lab软件进行实验,研究颗粒尺寸、激振频率及初始载荷对阻尼特性的影响规律并验证所建立的理论模型的准确性。研究表明:随着初始载荷的增加,阻尼器的阻尼力单调递增;粒径为0. 7 mm的颗粒在高频激励下减振效果最好。
A new type of obstructed piston-type particle damper is proposed. Establish the theoretical model of damping force of the particle dampers. The experiment is carried out by LMS Test Lab software. Study the influence of the particle size,excitation frequency and initial load on the damping characteristics and verified the accuracy of the established theoretical model. It is found that the damping force of the damper is monotonically increasing with the increase of the initial load,and the vibration reduction is the best under high frequency excitation with 0. 7 mm particle size.
A new type of obstructed piston-type particle damper is proposed. Establish the theoretical model of damping force of the particle dampers. The experiment is carried out by LMS Test Lab software. Study the influence of the particle size,excitation frequency and initial load on the damping characteristics and verified the accuracy of the established theoretical model. It is found that the damping force of the damper is monotonically increasing with the increase of the initial load,and the vibration reduction is the best under high frequency excitation with 0. 7 mm particle size.
引文
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[5]杨绍钊.含粉土颗粒的活塞式油阻尼器减震性能研究与应用[D].重庆:重庆大学,2015:1-26.
[6] POPPLEWELL N,SEMERCIGIL S E. Performance of the bean bag damper for a sinusoidal sinusoidal external force[J]. Journal of Sound and Vibration,1989,133(2):193-233.
[7]郭阳阳、杨啟梁,胡溧,等.一种带活塞的颗粒阻尼器阻尼特性试验研究[J].科技通报,2016,32(8):12-16.
[8]谢洪勇,刘志军.粉体力学与工程[M].北京:化学工业出版社,2007.
[2] PAPALOU A,MASRI S F. Performance of particle dampers under random excitation[J]. Journal of Vibration and Acoustics,1996,118(4):614-621.
[3]胡溧,黄其柏,柳占新,等.颗粒阻尼的动态特性研究[J].振动与冲击,2009,28(1):134-137.
[4]姚冰,陈前.基于粉体力学模型的颗粒阻尼研究[J].振动与冲击,2013,32(22):7-12.
[5]杨绍钊.含粉土颗粒的活塞式油阻尼器减震性能研究与应用[D].重庆:重庆大学,2015:1-26.
[6] POPPLEWELL N,SEMERCIGIL S E. Performance of the bean bag damper for a sinusoidal sinusoidal external force[J]. Journal of Sound and Vibration,1989,133(2):193-233.
[7]郭阳阳、杨啟梁,胡溧,等.一种带活塞的颗粒阻尼器阻尼特性试验研究[J].科技通报,2016,32(8):12-16.
[8]谢洪勇,刘志军.粉体力学与工程[M].北京:化学工业出版社,2007.