Rolling Stock 

Abstract: The task of the bumping resistance design for rolling stock is to predict and control the full process of the vehicle bumping,apply appropriate technical measures to ensure that the whole bumping process take place according to the designed sequence,and the vehicle bumping energy be fully absorbed,so as to protect the safety of passengers and train staff to the utmost.In this paper,the principles and design requirements of the key parts in the bumping resistance design such as the coupler draft gears,shear equipment,anticlimbing device and car end bumping energy absorption structure are described.The distribution of the bumping energy and the calculation formula of the car end energy absorption are discussed.

Abstract: The development history of bogies for high speed multiple units in China and abroad, the dynamics performance evaluation for high speed multiple units and the effect of bogie structures on dynamics performance of vehicles are described generally. Some suggestions are given on the fundamental mode of bogies for high speed multiple units in our country.

Abstract: With the design thought of the collision resistant system,the design plans with application of the new type energy absorption structure and filler material are put forward,and the design plans are compared through the collision simulation analysis.The simulation result on the basis of the LS-DYNA calculation method shows that the optimized plan of the new type fender has fairly good safety performance in energy absorption and collision damping.

Abstract: The features of brake system for high speed trains with the speed higher than 350 km/h are analyzed. The numerical simulation calculation is made for the train mounted with the air resistance braking plate, the value of the braking force generated by the designed air resistance braking plate is obtained, the effect of the braking force generated by the air resistance plate and the effect of mutual interference between the front and the rear braking plates are verified. The additional points caused by the aerodynamic brake are analyzed, and the relevant contents which need further research and discussion for the aerodynamic brake are pointed out.