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Analyzing the Design Rationality of Long and Steep Downhill Road from Thermal of Vehicle Brake System

Author: WuZhenYu
Tutor: ZhangLinHong
School: Kunming University of Science and Technology
Course: General and Fundamental Mechanics
Keywords: long and Steep Downhill road Brake drums temperature gradient Slope length
CLC: U412.3
Type: Master's thesis
Year: 2010
Downloads: 48
Quote: 0
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Abstract


As the growth of China’s social and technological, road transport has become an important pillar of economic development. Various countries vigorously are developing the transportation enterprise, thus triggering a series of issues, mainly the occurrence of traffic accidents. Transport is an integrated environment with people, vehicles, roads and natural factors such as the composition of co-ordination among the various factors impact on each other, inevitably traffic accidents, While China has also invested a great deal of manpower and resources to study the methods to reduce the number of traffic accidents as well as specific treatment measures with certain results achieved.Yunnan Province is in mountainous areas in southwest of China. There is mountains rise and fall with such large changes in topography requires continuous up or down slope. In this long and Steep Downhill road conditions are much more likely a serious traffic accident, endangering people’s lives and property. Therefore, a reasonable gradient and slope length can not only effectively overcome the height difference and also can ensure the economic rationality of Highway Engineering.In this paper, starting from the braking performance of heavy-duty vehicles, using finite element software simulation of brake drum temperature changes from the braking capabilities of heavy vehicles, through a simplified physical modeling, the calculation and the results analyzed, summed up the brake drum on the trend of temperature change in order to discuss in the road Because of the heat during the braking performance degradation caused by brake situation. As a basis for further study of highway alignment design in particular, long and Steep Downhill road improvement program, consider the brakes failure in high temperature as a design practical factors. Different downhill linear, slope and length are the course of the vehicle brake drum temperature changes and have a significant impacting. And with the finite element analysis results obtained some improving in design specifications.Through improvements in linear design can effectively reduce the incidence of traffic accidents, but can not completely eliminate it. Based on earlier results, a number of road safeties can be taken in the services facilities and safety facilities in the following section, for example Service area, hedge lane, Emergency Parking zone and safety warning signs, etc. And use the analysis of the various security facilities in the way of checking the settings.

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