Analysis of ground vibration control by gradedwave impeding block

doi:10.6052/0459-1879-17-221

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	Analysis of ground vibration control by gradedwave impeding block
	Ma, Qiang 1; Zhou, Fengxi 1; Liu, Jie 2
刊名	Lixue Xuebao/Chinese Journal of Theoretical and Applied Mechanics
	2017-11-18
卷号	49 期号:6 页码:1360-1369
关键词	Beams and girders Dynamic response Fourier transforms Functionally graded materials Inverse problems Materials properties Matrix algebra Pollution control Reverberation Rigidity Soil structure interactions Transient analysis Vibration control Amplitude of displacements Elastic foundation Fourier transformations Physical and mechanical parameters Reverberation ray matrix method Two-dimensional transient Vibration isolation systems Wave impeding block
ISSN号	04591879
DOI	10.6052/0459-1879-17-221
英文摘要	Wave impeding block (WIB) vibration isolation system as an effective measure for vibration pollution control is applied in practical engineering gradually, but the previous studies mostly focused on the single-phase solid homogenous materials, few research have been on the vibration isolation performance of wave impeding block with materials properties that have a continuous variation along space relatively. Based on the functionally graded material, a new type of foundation vibration isolation system is proposed. Considering setting the graded wave impeding block in the elastic foundation which subjected to surface strip harmonic load, using the Fourier transform and Helmholtz vector decomposition, the calculation formula of reverberation ray matrix method (RRMM) is established for two-dimensional transient response of elastic foundation based on the line elastic theory. Assuming that the material properties of graded wave impeding block have an exponential law distribution along the thickness-coordinate, by using numerical inverse Fourier transformation, the displacement and the stress are obtained. Via numerical examples, the effectiveness of vibration isolation of graded wave impeding block is compared to conventional single phase solid homogenous wave impeding block, and the influences of physical and mechanical parameters including the gradient factor, the depth and the thickness of graded wave impeding block are analyzed. The results show that the graded wave impeding block can effectively reduce the vibration amplitude, and compared with the single phase solid homogenous wave impeding block isolation system, graded wave impeding block isolation system has better effect. The amplitude of displacement and stress is decreased with the increase of gradient factor. The effect of vibration isolation of graded wave impeding block improved with the increased of the thickness, but reduced with the increasing of the embedded depths. © 2017, Editorial Office of Chinese Journal of Theoretical and Applied Mechanics. All right reserved.
语种	中文
出版者	Chinese Society of Theoretical and Applied Mechanics
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114556]
专题	土木工程学院
作者单位	1.School of Civil Engeering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Tra_c and Transportation, Lanzhou JiaoTong University, Lanzhou; 730070, China
推荐引用方式 GB/T 7714	Ma, Qiang,Zhou, Fengxi,Liu, Jie. Analysis of ground vibration control by gradedwave impeding block[J]. Lixue Xuebao/Chinese Journal of Theoretical and Applied Mechanics,2017,49(6):1360-1369.
APA	Ma, Qiang,Zhou, Fengxi,&Liu, Jie.(2017).Analysis of ground vibration control by gradedwave impeding block.Lixue Xuebao/Chinese Journal of Theoretical and Applied Mechanics,49(6),1360-1369.
MLA	Ma, Qiang,et al."Analysis of ground vibration control by gradedwave impeding block".Lixue Xuebao/Chinese Journal of Theoretical and Applied Mechanics 49.6(2017):1360-1369.