Published Paper Details:

Along with clearance, length of overhangs affects the approach and departure angles, which measure the vehicle's ability to overcome steep obstacles and rough terrain. The longer the overhang, the smaller is the approach/departure angle, and thus lesser the car's ability to climb or descend steep ramps without damaging the bumpers. Therefore these overhangs are lifted up to avoid damage. But the front overhang is having limitation due to accommodation of engine. Whereas, the rear overhang can be raised up for the convenience, to improve vehicle safety. The provision of rear overhang height leads to eccentric loading action on the frame due to front impact. Thus in this work an attempt is proposing to study the behavior of chassis frame under action of front impact by varying the height of rear overhang. Also it can be seen that the front impact may not act all the time through the CG of the chassis frame, it is further proposing to study the chassis frame behavior considering the eccentric load action from the front of the vehicle. The model of Chassis frame is made using Catia V5, followed by analysis using Ansys 15.0 to study the stress, deformation and safety factors development. The analysis is repeated by considering different rear overhang heights. Also the analysis is repeated by considering the eccentric loading condition and further a modification is suggested to design of chassis frame for improving the load bearing capacity based on the obtained results. And the analysis is done on suggested modified chassis to compare the results with existing model.