Design And Dynamic Analysis Of Aerial Rail Shuttle

In the current process of China’s industrialization,the industrial requirements for production efficiency are constantly improving,and the materials transportation is the key link in industrial production.Therefore,the transportation equipment in industrial production is constantly being innovated.In this thesis,the aerial rail shuttle（ARS）is designed,and it can be used in various industrial applications,such as the underground mine transportation,unmanned warehouse and production line of precast concrete components.Moreover,the vertical vibration isolation,hunting stability,curve negotiation performance and rigid-flexible coupling dynamics of ARS are studied respectively,and the results show that ARS has fast running speed,satisfactory load capacity and curve negotiation performance.In a word,this ARS can improve the material delivery efficiency in industrial production,and provide reference for the design,research and application of similar products.This thesis mainly including the following topics.（a）The structure and parameters of ARS are introduced,and the multibody system dynamics model of ARS is established based on SIMPACK.Moreover,in order to improve the work efficiency of ARS and ameliorate the vibration caused by vertical track irregularity,the optimal parameters of suspension are obtained based on H₂ optimization,i.e.,the stiffness and damping which can minimize the vibration energy.The quarter vehicle model is simulated,and the results verify the correctness of the parameter optimization results.（b）The hunting stability of ARS is studied.The linear critical velocity and nonlinear critical velocity of ARS hunting instability are obtained by using root locus method and numerical simulation respectively,and the results show that ARS has good lateral stability below 46 km/h.Moreover,the curve negotiation performance of ARS is evaluated in terms of derailment coefficient,wheel load reduction ratio,wheel-rail force.The effects of different loading conditions,driving speed and radius of track on the curve negotiation performance of ARS are mainly observed,and the results provide a reference for the engineering application of ARS and the design and application of similar products.（c）The rigid-flexible coupling dynamic model of ARS is established based on co-simulation of ABAQUS and SIMPACK,and then the differences between rigid-flexible coupling model and multi-rigid-body model are quantitatively investigated from three aspects:the stationarity of vibration,the wear behavior of wheel and the influence of curve track.The simulation results show that the rigid flexible coupling model can more accurately describe the dynamic behavior of ARS,and some results have reference significance for the rigid flexible coupling dynamics of other rail vehicle systems.Finally,the research results and contents are summarized,and the deficiencies and future research directions are also proposed.