Abstract
Increased road traffic combined with heavy vehicle loads leads to deterioration of pavements and reduces the life span of the paved roads. As a result, large amounts of financial resources are spent each year to improve and maintain road infrastructure around the world. Vehicle dynamics and pavement dynamics are strongly coupled through their contact points. This research focuses on the dynamic analysis of pavement-vehicle interaction system and the effect of coupling action on the response. The system response due to the moving vehicular load on rough road supported by a linear visco-elastic foundation was investigated. The vehicle is modeled as a two-degree-of-freedom quarter-vehicle model, and the pavement-foundation system is described by a simply supported Euler-Bernoulli beam resting on Pasternak foundation, while the tire is coupled to the flexible pavement with a single point contact. Galerkin method was used to develop a system of governing differential equations for a coupled system in the time domain. Direct numerical integration method using Newmark-β based on linear average acceleration method was then used to solve the governing equations and evaluate the response of the coupled system. The results were validated with previous research works and compared with conventional uncoupled systems. Finally, the effects of parameters such as vehicle speed, road roughness, soil stiffness and suspension damping on the responses were investigated.
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Support from Natural Science and Engineering Research Council of Canada (NSERC) is gratefully acknowledged.
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Gamaleddine Elnashar received his B.Sc in mechatronics engineering from October 6 University, Cairo, Egypt, in 2001. His M.Sc. in mechanical engineering is from Cairo University in 2009, and his Ph.D. in mechanical engineering from Concordia University, Montreal, Canada, in 2018. His research interests include vehicle dynamics, control systems, mechanical vibrations and structures.
Rama B. Bhat, Professor in the Department of Mechanical, Industrial & Aerospace Engineering, Concordia University, Canada, obtained his Ph.D. and M.Tech. in mechanical engineering from IIT Madras, India, in 1973 and 1968, respectively, and did his B.Eng. in mechanical engineering from KREC, India in 1966 (present NITK). His current research interests include random vibrations, rotor dynamics, structural acoustics and micromechatronics.
Ramin Sedaghati, Professor of Mechanical, Industrial & Aerospace Engineering, Concordia University, Canada, received the B.Eng. and M.Sc. in mechanical engineering from Amirkabir University of Technology, Tehran in 1988 and 1990 and his Ph.D. in mechanical engineering from the University of Victoria in 2000. His areas of expertise are: smart materials and structures, especially magneto-rheological and electro-rheological fluid based adaptive structures, vibration analysis and vibration control using smart materials, passive and semi-active energy absorption systems, structural design optimization and computational mechanics (FEM).
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Elnashar, G., Bhat, R.B. & Sedaghati, R. Modeling and dynamic analysis of a vehicle-flexible pavement coupled system subjected to road surface excitation. J Mech Sci Technol 33, 3115–3125 (2019). https://doi.org/10.1007/s12206-019-0606-5
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DOI: https://doi.org/10.1007/s12206-019-0606-5