Research On The Key Techniques For Luxury Bus Body Development

Along with the rapid development of the national economy and the improvement of people's life, more and more travel companies and enterprises prefer to buy luxury buses. Besides complete equipment, the style and structure design of the luxury buses must meet higher requirements. So, the manufactories have to use advanced technologies and methods in their new bus development. The thesis took the development of HSZ6120H luxury bus as an example. Some key technologies of its style and structure design were studied and summarized. The bus has been manufactured and passed the rule test. Some major contents as follows,(1) Marketing study and a series of analysis to the style trend and style factors of luxury bus had been conducted. The point of view that the most important task for the bus style is the scheme before development was proposed. The means of the scheme before development was also studied.(2) By means of computer aided styling method, the style of the HSZ6120H luxury bus was developed. Aimed at the warp of the effect and the distortion exist in the small scaled model, a new method for making the 1:1 model was proposed. It use the computer styling model in the numerical control manufacturing center to sculpture split foam models and then stick them into a full model. So, the 1:1 model can be used to do the evaluation and validation. The heavy works in the style modification can be greatly decreased.(3) The design principles for the 6 segments of the body structure were studied and summarized, and the body structure of HSZ6120H was developed. The strength and stiffness of the body structure were analyzed by means of ANSYS software. At the same time, the structural characteristics of the half-load body structure were analyzed and the deficiency existing in the load adding method which put the weight of the assemblies on the near nodes was pointed out. A new method which using an equivalent load added on the node corresponding with the front wheel was proposed.(4) The whole bus design was validated by rule tests.