Strength Analysis of Chassis Structure for Double Deck Bus

Chassis strength and durability of local buses has been successively developed as many large automobiles due to reason for safe passenger transportation. This paper describes design method and strength analysis of chassis structure for double deck bus. C-beam and L-beam are created and assembled as for chassis frame structure by using CAD software. Finite element simulation is employed to evaluate total deformation and strength of designed bus chassis structure according to reliable safety factor from engineering design principle. Loading condition for simulation includes fully applied bending forces that are defined as heavy weight exerted on member joints. Finite element simulation result reveals that the fracture stress is not over than yield stress of the material. Safety factor is 2.16, which is the acceptable value under defined safety standard from department of land transport.