Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 52 8 2019 04 12 Stress and Vibrational Analysis of Non-Pneumatic Tire and Study the Effect of the Spoke Curvature and Velocity on the Wheel Vibration Using Finite Element Method Stress and Vibrational Analysis of Non-Pneumatic Tire and Study the Effect of the Spoke Curvature and Velocity on the Wheel Vibration Using Finite Element Method 2213 2230 3368 10.22060/mej.2019.15051.6023 FA Farzaneh Baradaran Department of Mechanical Engineering, Isfahan University of Technology Peiman Mosaddegh Department of Mechanical Engineering, Isfahan University of Technology Reza Tikani Isfahan University of Technology Journal Article 2018 10 06 Tweel is a new type of non-pneumatic tire. The purpose of this research is to simulate the wheel from the beginning of the movement to reach the speed of 60 km/h and study the effect of spoke curvature and vehicle speed on the vibration amplitudes. Spokes curvature has an effect on the vibrational behavior of the spoke and the wheel. For this reason, in addition to the reference wheel with spokes curvature of 5 mm, two other models with spokes curvature of 4 mm and 6 mm are also modeled. This study has shown that with the change in the curvature of spokes, the amplitude of spokes vibration and its frequencies have changed dramatically. Two important disadvantages of this type of wheels are vibrations and making loud noises at speeds more than 80 km/h. For this purpose, the speed of the wheel in the simulation is increased to 100 km/h. It is observed that at speeds of higher than 70 km/h, the spokes of the wheel are highly vibrated. At this moment, spokes vibrational frequencies are as same as their natural frequencies and the resonance occurs. As a result, the designed wheel is useful at speeds lower than 70 km/h. Tweel is a new type of non-pneumatic tire. The purpose of this research is to simulate the wheel from the beginning of the movement to reach the speed of 60 km/h and study the effect of spoke curvature and vehicle speed on the vibration amplitudes. Spokes curvature has an effect on the vibrational behavior of the spoke and the wheel. For this reason, in addition to the reference wheel with spokes curvature of 5 mm, two other models with spokes curvature of 4 mm and 6 mm are also modeled. This study has shown that with the change in the curvature of spokes, the amplitude of spokes vibration and its frequencies have changed dramatically. Two important disadvantages of this type of wheels are vibrations and making loud noises at speeds more than 80 km/h. For this purpose, the speed of the wheel in the simulation is increased to 100 km/h. It is observed that at speeds of higher than 70 km/h, the spokes of the wheel are highly vibrated. At this moment, spokes vibrational frequencies are as same as their natural frequencies and the resonance occurs. As a result, the designed wheel is useful at speeds lower than 70 km/h. https://mej.aut.ac.ir/article_3368_165a59f7cf3b5c4396ba65953d679f17.pdf