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		题名	作者	年代	出处	被引量
	1	Analytical approach for the design of convoluted air suspension and experimental validation显示文摘An improved analytical design to investigate the static stiffness of a convoluted air spring is developed and presented in this article.An air spring provides improved ride comfort by achieving variable volume at various strokes of the suspension.An analytical relation is derived to calculate the volume and the rate of change in the volume of the convoluted bellow with respect to various suspension heights.This expression is used in the equation to calculate the variable stiffness of the bellow.The obtained analytical characteristics are validated with a detailed experiment to test the static vertical stiffness of the air spring.The convoluted air bellow is tested in an Avery spring-testing apparatus for various loads.The bellow is modeled in the ABAQUS environment to perform finite element analysis(FEA)to understand and visualize the deflection of the bellow at various elevated internal pressures and external loads.The proposed air spring model is a fiber-reinforced rubber bellow enclosed between two metal plates.The Mooney-Rivlin material model was used to model the hyperelastic rubber material for FEA.From the results,it is observed that the experimental and analytical results match with a minor error of 7.54%.The derived relations and validations would provide design guidance at the developmental stage of air bellows.These expressions would also play a major role in designing an effective active air suspension system by accurately calculating the required stiffness at various loads.	Gokul Prassad Sreenivasan Malar Mohan Keppanan	2019	Acta Mechanica Sinica2019，35，5：	2
	2	Revealing the high-frequency attenuation mechanism of polyurea-matrix composites显示文摘In this paper,a method for analyzing the high-frequency attenuation property of polyurea-matrix composites is developed by combining experimental,computational and theoretical approaches.First,the ultrasonic experimental platform is established by solving the difficulties of high-frequency ultrasonic testing as high-frequency signal distortion,insufficient driving voltage and sampling rate failure,to study the dynamic mechanical properties(1-5 MHz)of pure polyurea and polyurea-matrix composites.Then,the influences of composite parameters including the size and volume fraction of inclusions on wave attenuation performance under different frequencies are obtained and further verified by numerical simulations.Next,the contribution of inclusions to the wave attenuation performance is also theoretically analyzed.It is found that the increase of inclusion volume fraction and inclusion diameter will increase the attenuation coefficient of the composites.And the attenuation of composites with the inclusions of a 150-μm diameter and 30%as volume fraction can be 82%higher than pure matrix.This amplifying attenuation effect of inclusions is mainly attributed to the scattering effect,which is verified by comparing numerical and theoretical results.	J.Cheng Z.L.Liu C.C.Luo T.Li Z.J.Li Y.Kang Z.Zhuang	2020	Acta Mechanica Sinica2020，36，1：	1

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