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The fatigue analysis model of vehicle frame based on random vibration theory is established according to studying a new special vehicle frame. According to the stress category of predicted points and material property, the modified fatigue curve(S-N curve) is obtained. Taking the FEA analysis results of the vehicle frame as the basis of fatigue calculation, the fatigue life and the fatigue damage...
The quality of suspension helical spring is very important to the stationarity and safety of automobile. Taking the automobile suspension helical spring as the research object, by using Pareto optimization theory and particle swarm optimization algorithm, the paper establishes a multi-objective optimization model of automobile suspension helical spring which is based on the Matlab optimization design...
Understanding the stop-making behavior of commuters is important for planners and policy makers in their efforts to improve travel demand models. This paper describes a set of stop frequency models used to predict the number of non-work activity stops made by individual adult workers in five different time periods. Using the travel daily data from the third comprehensive transport survey of Beijing,...
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