Designing and Frequency Analysis on Bus Structure for Lynx and Stag

The structural strength is a fundamental concern. Unnecessary weight of the bus structure leads to reduction in overall performance of bus. The designing the whole frame with analysis by using solidwork software and reducing the capital spent on out sourcing as well as materials. The perfect chassis is a large diameter thin walled tube. In order to understand this we should have a solid grasp of statics and deflection. The Automotive chassis has two main goals, to hold the weight of the components and to rigidly fix the suspension components together when moving. The frame of the bus consists of five parts are roof, floor, sides, front, rear. Each frames are designed separately and is assembled together using weldment. The frame is a space frame structure made separately out of two types of cross sections that is rectangular tube and round tube. After the completion of the frame, stress deformation and frequency modes are analysed and results are obtained. As per the target of 5 hertz of minimum natural frequency, the model was designed and values more than the target is achieved in all the five modes which are detailed results in this report.