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Design of Powered Rail Vehicles and Locomotives
Published in Simon Iwnicki, Maksym Spiryagin, Colin Cole, Tim McSweeney, Handbook of Railway Vehicle Dynamics, 2019
Maksym Spiryagin, Qing Wu, Peter Wolfs, Valentyn Spiryagin
The main elements of a bogie are the bogie frame, on which are installed the braking system equipment, elements of the locomotive sanding system, spring suspension, wheelsets with associated assemblies and traction drives or wheel-traction drive assembles.
Dynamics simulation of a high-speed railway car operating in low-temperature environments with stochastic parameters
Published in Vehicle System Dynamics, 2020
Ren Luo, Wanxiu Teng, Xingwen Wu, Huailong Shi, Jing Zeng
The multibody dynamics system (MBS) model for the high-speed railway train CRH380 is established using SIMPACK. The first car is a motor car and its dynamic performance is relatively poor, so it is selected as the object of the analysis. The vehicle has two bogies and one car body. Each bogie consists of a frame, a motor system, two wheelsets and four axle box guiding arms. The primary suspension includes eight vertical dampers, eight steel springs and eight rubber joints for the guiding arm. The secondary suspension includes four air springs, four lateral dampers, four vertical dampers, eight yaw dampers, two anti-roll bars and two lateral stops. The car body mass is 37.5 t, the mass of the bogie frame is 2.3 t and the mass of the motor system is 0.75 t. Some key suspension parameters are shown in Figure 4(a). Thus, the entire vehicle model has 17 rigid bodies and 62 degrees of freedom in total. In this model, all the kinematic constraints and the force elements within the two stages of the suspensions are expressed as nonlinear force elements, including the bump stops, springs and dampers.
Design and safety analysis of a 11-Waggon consist for transporting rails
Published in Australian Journal of Mechanical Engineering, 2022
Yan Quan Sun, Dwayne Nielsen, Qing Wu, Wenhsi Chua, Maksym Spiryagin
As the conventional three-piece bogie does not have a primary suspension, the unsprung mass of a bogie comprised of two wheelsets and two sideframes will significantly increase the wheel-rail impact force caused by any short wavelength track irregularities or wheel defects. Adding primary suspension and optimizing wheelset and sideframe designs will significantly reduce wheel-rail impact forces. In addition, without primary suspensions, the soft suspension required for good curve negotiation (via wheelset yaw flexibility) is absent. In fact, the bogie has its axles held rigidly parallel which prevents radial alignment of the axles and hence is ‘forced-steered’ around curves by the flange grinding against the high rail at a significant angle of attack.
Optimising the location of wagon gravity centre to improve the curving performance
Published in Vehicle System Dynamics, 2022
Duo Zhang, Yinying Tang, Zhongyang Sun, Qiyuan Peng
The dynamics simulation model is made up of one car body and two three-piece bogies. We use a massive cuboid to represent the model of car body. The bogie consists of the wheelset, axle box, bistops, side frame, friction wedge, secondary suspension, bolster, side bearer and centre plate. The revolute joint is the connection between wheelset and axle box. Bistops produce the buffer action between axle box and side frame which is linked with bolster by the suspension system. The side bearer and centre plate offer spring force, contact force and torque component to restrain the interaction between the car body and bolster. The primary parameters of the simulation model are shown in Table 1.