Vertical dynamics of the Maglev vehicle Transrapid

Hägele, Nora; Dignath, Florian

doi:10.1007/s11044-008-9136-0

Cited by 26 publications

(20 citation statements)

References 2 publications

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“…where F is the electromagnetic force, F 0 is the static magnetic force at the balance point, K p and C p are the equivalent magnetic stiffness and damping, respectively, c is the air gap, and c 0 is the air gap at the balance point. The total equivalent magnetic stiffness and damping of a single magnet were chosen to be 25.98 Ns/mm and 0.14 kN/mm, respectively [2].…”

Section: Model Of the Interactive Electromagnetic Forcementioning

confidence: 99%

“…There is an extensive literature on maglev technology that is mainly focused on the dynamic interaction between a maglev train and the guideway system. Hägele and Dignath [2] have simulated a complete maglev vehicle moving along a guideway consisting of several girders. Lee et al [3] performed a study on the effect of vehicle and guideway characteristics on the dynamic responses of low and medium-speed maglev systems.…”

Section: Introductionmentioning

confidence: 99%

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High-speed maglev train-guideway–tunnel–soil modelling of ground vibration

Jin

Cao

2011

Proceedings of the Institution of Mechanical Engineers, Part F:

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A fully coupled three-dimensional multi-body finite element model coupled with a perfect matching layer approach is presented to study the ground vibrations created by a highspeed maglev train running in a tunnel. The maglev train is assumed to consist of multiple rigid bodies and the magnetic force between the maglev train and its guideway is simulated using linear springs and dampers. The guideway, tunnel and soil are modeled by three dimensional finite elements with PML as the artificial boundary condition. The results obtained for a maglev train running on a viaduct line show a reasonable agreement with available experimental data, which demonstrates the validity of the proposed model. This model is subsequently utilized to simulate the vibration levels created by the train running in a tunnel in terms of parameters related to the maglev train, tunnel, and soil.

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Section: Model Of the Interactive Electromagnetic Forcementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-speed maglev train-guideway–tunnel–soil modelling of ground vibration

Jin

Cao

2011

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…Maglev trains have not much in common with the aforementioned vehicles but analysis topics like passenger comfort, design of suspensions, control systems or emergency guidance mechanisms will also apply to them and may be easily approached by means of multi-body dynamics, see, e.g., Ref. (14). The required modelling elements for a simulation of the magnetic levitation, guidance and traction/braking forces are usually not immediately parts of commercial MBS software but these force laws may easily be programmed into user-written elements or coupled to the MBS solver by co-simulation or code export from control design tools.…”

Section: Special Railed Vehiclesmentioning

confidence: 99%

State-of-the-Art Railway Vehicle Design with Multi-Body Simulation

Weidemann¹

2010

JMTL

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Multi-body simulation is a key method for design, homologation and research of railed vehicles of all kind. Not only the "classic" assessment of the rail-to-wheel forces and running stability but also many other common and advanced tasks can today be handled by multi-body simulation. This paper gives an overview of the multi-body simulation state of the art for the different fields of application, lifecycle steps and user groups in the railway industry, along with some examples of basic and advanced applications and current research topics. The aim of multi-body simulation is to find in a very short time accurate answers to all questions regarding the dynamical behaviour of a mechanical or mechatronic system -even if not every detail of the system is known. It is therefore predestinated for dynamical analyses and variant calculations during the whole product design and lifecycle, including the concept phase. Multi-body simulation, in contrast to finite-element simulation, does not need large calculation effort; MBS software is able to run on every desktop computer or notebook. Calculation times are counted in seconds, minutes or hours. See, e.g., Refs. (31), (32) and (17) for an overview of MBS and its application to vehicle systems. Figure 2: MBS model of a bogie with bodies ("B") and force/torque elements ("F"), each body except the track foundation has 6 degrees of freedomA multi-body system is a mechanical model consisting of separate bodies that are characterised by their mass and inertia properties. They are interconnected by joints, kinematic constraints and force/torque elements. The set of joints and constraints defines the available degrees of freedom (DOF) of the system. The movements within these degrees of freedom are influenced by the force and torque elements, which may use an arbitrary

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“…In Weidemann, 7 a review on the multibody simulation of a railway vehicle is presented, where classical train and metro layouts are almost uniquely considered which do not have rubber wheels and are usually self-propelled with on-board motors. Some papers deal with the Maglev people movers which are subject to the pulsating effect of the magnetic traction and vertical forces, 8 producing vibration of both the vehicle and the railway. 9 The guideway elements are also considered in the literature; in particular, in Yoshida et al, 10 the lateral motion of a Maglev APM is investigated in order to prevent contact between the train and the guideway.…”

Section: Introductionmentioning

confidence: 99%

Multibody simulation of a rope-driven automated people mover

Bucchi

Frendo

Bavaresco³

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part F:

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In this paper, a multibody model of the automated people mover, PisaMover, is presented. PisaMover is a rope-driven small train, composed of a few cabins, which makes use of train-inspired bogies. The aim of the model was to support the design of the architecture of the suspensions and to select the proper characteristics of the elastic and damping elements in order to fulfill comfort needs of passengers and to resolve the constraints related to the layout of the vehicle and the guide-ways. For this purpose, attention was especially focussed on the definition of the railway path and the modeling of the forces of the supporting and guidance wheels. A simplified model of the rope was implemented, which neglects the rope elasticity and computes the rope force direction taking account of the different positions of the sheaves along the path. The multibody simulation allowed to select the most appropriate suspension system and to properly define the elastic and damping characteristics of the shock absorbers, with respect to the technical constraints. A modal analysis was performed, and several dynamic on-track simulations were carried out to infer the effect of dampers' design on the comfort of passengers. Within the validity of the simplifying assumptions, the multibody simulation also allowed to obtain a fairly good estimate of the loads necessary for the design of the main structural components.

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Vertical dynamics of the Maglev vehicle Transrapid

Cited by 26 publications

References 2 publications

High-speed maglev train-guideway–tunnel–soil modelling of ground vibration

High-speed maglev train-guideway–tunnel–soil modelling of ground vibration

State-of-the-Art Railway Vehicle Design with Multi-Body Simulation

Multibody simulation of a rope-driven automated people mover

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