The Lightweight Design Of The Car Frame

With the development of national economy and traffic system, car industry has been developed at very fast speed. As a part of the car, the frame supports all kinds of complicated loads coming from the road and the freight being loaded. And many assembly of the car are built in the frame. So the intensity and the strong of the frame play a role way in the car's design.The frame of some truck is analyzed and studied using the ANSYS in this paper. The static intensity of the frame is analyzed and studied in the instance of pure bending and coupled bending and torsion. In this paper I analyzed and studied the intensity of the frame in the instance of the bend and the torsion when the car was running, and analyzed the stress and the displacement of the frame when the car was running in the washboard-road and in the case of sharp-turning. The result indicates that the stress of the frame is less than the utmost intension to resist to be pulled of the material being used. So the frame is satisfied with the design, but the stress is less and the economy is not rather better.In this paper the dynamic characteristic that is mainly mode analysis is analyzed. The mode analysis is the core of the configurable dynamic design, and it overcomes the shortcoming of the static analysis and emphasizes that the problem should be considered from the whole configuration. The mode vibration model and proper frequency of the frame are calculated by mode analysis. The local intension is considered by the frequency and the model.According to the characteristic of the frame, several schemes used to design the frame are come out, which make the frame become light, save raw and processed materials, reduce the cost used produced, increase the fuel's economy and protect the circumstance.