Research On Fatigue Analysis Of Bus Body Frame

With the booming tourism industry in recent years, more and more people choose to leave their homes to outdoor tourism.So many bus companies are actively developing a number of new passenger travel has been to meet the needs of the market.On this bus company in 2006 is a major new development of the high-grade coach.The use of technology is very mature Sweden imported bus chassis SCANIA.Suspension after some of its structural features are used in the overall structure of stamping, body types bearing for the entire load type.Body Frame rectangular steel tubes welded from multi-section.As the body is the main vehicle carrying part of the crew of space and cargo storage spaceit is for the body-bearing suspension components, chassis and body components installed base of the annex,Alternating under various load is part of the relationship,it is very important body of the structure and properties.Body structure and properties need to be examined in many aspects, the most important of which include the following : (1).Crash Safety strength; (2), the body's natural characteristics, including modal, flexural strength and torsional stiffness; (3).key component of the connecting strength; (4), the overall body fatigue.The first three have their counterparts in the standard test methods to testIf certain experiments, such as collisions have also become common international standard.But along with the fatigue, because fatigue test of a long cycle, data consistency is poor,susceptible to external factors and other factors were not many manufacturers in the development of new models for the complete analysis of fatigue.Using a finite element method, along with the fatigue analysis by computer simulation.The combination of fatigue and load time history is given along with a relative indicator of fatigue life-fatigue damage,Fatigue damage to the frame structure -- size of the danger Department to identify and optimize the frame,Body Framework provide a theoretical basis for the design.Modern CAE simulation is relatively mature, the calculation method based on the CAE tools have been widely popular.In a moving vehicle by...