FEA based approach for Heavy Duty Commercial Vehicles Lift Axle Weld Analysis and Physically Correlated

Highway transportation using truck is an important transport mode of goods and product to their destination. Commercial vehicle is expensive mode of transportation so it will be protected from failure. For Heavy duty truck they are fully loaded at one side of transportation and other side empty transportation. In such case lift axle using (Pusher axle if lift axle is added front of drive axle and Tag axle when it installed after drive axle) when truck is loaded and when truck is empty it is in lift condition. Lift axle is play important role while loading so it is important that it should not fail. Many times lift axle fails at weld location due several load come on the axle. In this paper study of weld failure due several loading come on lift axle when truck is in loading condition. Load come on lift axle are Braking load, Vertical load, lateral load and Clutch drop test loading. Weld failure check in CAE analysis with various load cases and compare with actual physical vehicle failure. Weld failure correlation well correlate when actual loading are consider in analysis. For analysis loading data is measure from RLDA data that will be used for analysis. Weld failure prediction is very important for longer life lift axle component. This paper correlates the CAE lift axle of weld failure with physical weld failure.