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3.7.63μ?üμ????èD￡o? 21
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????????ABSTRACT
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??????The frame￡?as a most important of a car,supports some accessories such as engine,clutch,gearbox,diverter,and withstands all kinds of force.The frame should have enough flexural rigidity,so as to keep the related positions of some parts unchange while the car goes;There also should be enough intensity in the frame,so as to ensure its enough reliability and life-span,frame rigidity not only causes vibration and noise while being insufficient,but also makes the comfortableness of driving,stability of operation,reliability of some parts decline too.But the torsional rigidity of frame should not too big,otherwise it makes the load of the frame and hanging system enlarge.
??????This article references the same type car to design a miniature car frame which suits the vast rural customers. First,this article introduces the history and development trends and characteristics of mini..