DESIGN AND ANALYSIS OF SUSPENSION SYSTEM IN QUAD BIKE USING LOTUS SHARK SIMULATION SOFTWARE

The main objective of this paper is to design and analyze the entire double wishbone suspension system for an All-Terrain Vehicle like quad bike for improving the stability and handling of the vehicle. The real gratification of driving for an off-road enthusiast can be described as the thrill of the terrain coupled with a proficient machine to handle the terrain. However, this gratification can be derived only when the well-being level of the driver is maintained. Thus, it is concluded that the suspension system (which is responsible for providing a comfortable ride quality to the driver) is one of the most important sub-systems to be designed. The topic is focused on designing the suspension systems considering the dynamics of the vehicle along with minimizing the unsprung mass. The vehicle must be able to withstand the craggy environment of off-road terrain. Adjusting height of roll center is the major problem in most off road vehicles. If the height of roll center is not properly adjusted their will be more roll angle and leads to topple of the vehicle. By confining the height of roll center in between ground and C.G. so the vehicle will roll less. During the entire design process, user interest through innovative, inexpensive, and effective methods was always the primary goal. By adjusting small track width and wheel base, obtained the reduced (small) turning radius. Keywords: Double wishbone suspension, Roll centre, Motion ratio, Sprung mass