Vehiclebridge dynamic interaction using finite element modelling 26. The governing equations of a vehicle model with twelvedegrees of freedom 12dof are derived from the energy method using the lagrange equation of motion. Coupled analysis is a wide topic covered in several publications, i recommend vehiclebridge interaction dynamics yang, yau and wu, 2004. In this paper, we investigate vehiclebridge interactions and propose a new method for assessing bridge conditions based on nonlinear vibration analysis. Based on commercial software ansys mechanical apdl, 3d beam element, mass element and springdamper element are integrated together in building a 3d vehicle and bridge system. Analysis and simulation of the vehiclebridgeinteraction in. In this method, the dynamic responses of vehicle subsystem and bridge subsystem are solved separately, the iteration within timestep is avoided, the computation memory is saved, the programming difficulty is reduced, and it is easy to adopt the commercial structural analysis software for. Fe analysis of vehicle bridge interaction was conducted using commercial program lsdyna and the super computer at the florida state university. Threedimensional bridgevehicle interaction analysis of simply. Chapter 4 application of vehiclebridge interaction dynamics 4. These models were improved over the years in better structural modelling, wheelrail interactions, and integration solution approaches. Recent studies relating to the dynamic response of bridges have been performed to characterize the response of a structure based on the forcing function vehicle bridge interaction and its basic parameters, such as length. S d, is dynamic strain at the center of sensor location ss is static strain at the center of sensor location the dynamic and static responses of any bridge depend on the types of bridges.
The widespread approach supposes analysis of a finite element model of a bridge under action of. Dynamic vehiclebridge interaction under simultaneous. Nonlinear vibration analysis of vehiclebridge interaction. Pdf the objective of this study is to develop an element that is both accurate and efficient for modeling the vehiclebridge interaction vbi in. The governing equations of a vehicle model with twelvedegreesoffreedom 12dof are derived from the energy method using the lagrange equation of motion.
The objective of this study is to develop an element that is both accurate and efficient for modeling the vehiclebridge interaction vbi in analysis of railway bridges carrying highspeed trains, which may consist of a number of cars in connection. For high speed or heavy trains a dynamic analysis is nec. This paper presents results of the finite element fe analysis of dynamic interaction between a heavy truck and a selected highway bridge on us 90 in florida. In this part, the dynamic vehicle bridge interaction is only approximately modelled by using the code specified dynamic amplification factor daf or dynamic load coefficient dlc. Dynamic analysis of vehiclebridge interaction based on interfacial contact algorithm. We focus on strctural health monitoring, dynamic analysis and performance prediction. Then one obtains the dynamic analysis model by using the finite element method and the vehicle bridge interaction equation based on the displacement coordination relationship of the contact between wheels and bridge. Firstly, eulerlagrange equation is applied to derive the vibration equation of threeaxle vehicle. Analysis and simulation of the vehiclebridgeinteraction. A nonlinear multispring tire model for dynamic analysis. Bridge models can be continuous or made of discretized finite elements. Usually, research of the dynamics of railway bridges is carried out based on a simplified description of the vehiclebridge interaction. The study aims at the dynamic analysis of the wvb system based on rigidflexible coupling method, which takes advantage of the high modeling efficiency for structures. In order to cover the complexity of coding and extend the generality on the road vehicle bridge iteration, a process to solve vehicle bridge interaction considering varied vehicle speed based on a convenient combination of matlab simulink and ansys is presented.
Force element is utilized to define the interaction between. In this part, the dynamic vehiclebridge interaction is only approximately modelled by using the code specified dynamic amplification factor daf or dynamic load coefficient dlc. The comparison of different approaches to model vehiclebridge interaction. Kovalev laboratory of computational mechanics bryansk state technical university, russia abstract the present paper describes the caebased approach for analysis of dynamics of a coupled model of a flexible railway bridge and a train. The vehicle bridge interaction can induce bridge vibration and consequently fatigue, durability deterioration, local damage, and even collapse of bridge structure. Vehicleinduced random vibration of railway bridges. Therefore, it is necessary to establish a vehicleroadbridge coupling model that is closer to reality, more efficient, and accounts for the actual tire effect. The german ice electric multiple unit emu train refined threedimensional space vehicle model is set up by multisystem dynamics software simpack, and the multiple nonlinear. Effect of dead, live and blast loads on a suspension bridge. This study examines the seismic response of a vehiclebridge interacting vbi system under vertical. Jun 15, 20 the commercial operation of the bullet train in 1964 in japan marked the beginning of a new era for highspeed railways. In order to cover the complexity of coding and extend the generality on the road vehiclebridge iteration, a process to solve vehiclebridge interaction considering varied vehicle speed based on a convenient combination of matlab simulink and ansys is presented. Finite element analysis framework for dynamic vehiclebridge interaction system based on abaqus article in international journal of structural stability and dynamics january 2020 with 109 reads.
Introduction the inservice bridges are subjected to moving vehicles every day and the dynamic interactions between vehicles and bridges can, on one hand, induce the bridge vibration and consequently the fatigue, durability deterioration, local damage, and even collapse of the bridge structure and on the other hand, lead to the influence on the vehicle safety as well as passengers comfort. A vehicle model is presented, and the dynamic load on the bridge is quantified based on bridge road roughness. Coupled vibration analysis of vehiclebridge system based on. The analysis has been performed modelling the train as a series of point loads. The composition of an interaction element and the parts of car bodies in contact is regarded as a substructure. Vehiclebridge dynamic interaction using finite element modelling. Finite element analysis framework for dynamic vehiclebridge. In this method, the dynamic responses of vehicle subsystem and bridge subsystem are solved separately, the iteration within timestep is avoided, the computation memory is saved, the programming difficulty is reduced, and it is easy to adopt the commercial structural analysis software for bridge. Based on commercial fe software ansys and mbs software simpack, the rigidflexible. This paper proposes a nonlinear multispring tire nmst model for dynamic analysis of vehiclebridge interaction vbi system considering separation and surface roughness.
Vehiclebridge dynamic interaction using finite element. Fatigue damage of suspenders is a main concern during the lifecycle maintenance of arch bridges and suspension bridges. This study may be used as a cornerstone of the dynamic analysis of large scale complicated structures. Request pdf finite element analysis framework for dynamic vehiclebridge interaction system based on abaqus this paper presents a. In this method, the dynamic responses of vehicle subsystem and bridge subsystem are solved separately, the iteration within timestep is avoided, the computation memory is saved, the programming difficulty is reduced, and it is easy to adopt the. The train crosses the bridge at constant speed and is represented by moving axle forces. Dynamic analysis of windvehiclebridge system based on rigidflexible coupling method. We conduct filed experiments, lab experiments and perform simulations using finite element analysis fea software such as abaqus on powerful worktations.
Development and interaction of a detailed truck using proper design standards were applied to realistically represent the actual loading conditions. Finite element analysis framework for dynamic vehicle. Because of the huge amount of kinetic energy carried at high speeds, a train may interact significantly with the bridge and even resonate with it under certain circumstances. A thorough understanding of this moving load problem is crucial for the design of bridge and its condition assessment as well as control of overweight vehicle. This framework can provide bridge designers and engineering practitioners with a general platform to analyze the coupled system with high modeling efficiency and accuracy in. In this paper, a solid vehiclebridge interaction vbi analysis method is developed to provide refined analysis on the bridge responses including displacement and local stress under vehicle loads. The studied vehicle is idealized as 3d nonlinear model consisting of several lumped masses connected. Dynamic analysis of nonuniform continuous girder bridge. An ansysbased spatial approach of analysis is proposed for the bridge vehicle interaction to investigate the dynamic responses of a curved concrete box girder bridge and vehicles. Dynamic interaction force exists between a vehicle and a bridge deck when the vehicle moves on top.
Coupled analysis is a wide topic covered in several publications, i recommend vehicle bridge interaction dynamics yang, yau and wu, 2004. Road vehiclebridge interaction considering varied vehicle. Dynamic analysis of road vehiclebridge systems under turbulent wind by means of finite element models. Analysis and simulation of the vehiclebridgeinteraction in horizontally. Firstly, this study proposes an original scheme for the threedimensional 3d analysis of the dynamic interaction between trains and horizontally curved railway bridges. Because of the excitation from vehicles wheels, a bridge will produce dynamic deformation and vibration when a vehicle passes on, and the dynamic responses of the bridge will a. Dynamic analysis of a railway bridge subjected to high. The global matrixes of the 2d grillage and plate bridge models are the result of assembling 1d beam and 2d plate elementary matrixes respectively.
In this paper, a solid vehicle bridge interaction vbi analysis method is developed to provide refined analysis on the bridge responses including displacement and local stress under vehicle loads. Vehiclebridge interaction element for dynamic analysis. Materials free fulltext fatigue life estimation for. Dynamic analysis of windvehiclebridge system based on. Numerical models for vehiclebridge interaction dynamic. The comparison of different approaches to model vehiclebridge. Key features are the 3d formulations for both the vehicle system and the bridge system, and. This paper presents an overview on inverse problems in vehiclebridge interaction dynamics. Vehicle bridge dynamic interaction using finite element modelling, finite element analysis, david moratal, intechopen, doi. Then one obtains the dynamic analysis model by using the finite element method and the vehiclebridge interaction equation based on the. A simplified numeric method is developed for solving the interaction problem, considering the effect of random road roughness and its velocity term.
Recent developments in inverse problems of vehiclebridge. Dynamic analysis of vehicle bridge interaction based on interfacial contact algorithm. An interaction element is defined to consist of a bridge element and the suspension units of the vehicle resting on the element. Using the finiteelement method, a vehicle is modeled as lumped masses supported by springs and dashpots and a bridge is modeled with rough pavement. Vehiclebridge dynamic interaction using finite element modelling combination of 1d, 2d andor 3d finite elements.
First, a nonlinear singlespring tire nsst model is developed, which can only provide compression force rather than extension force. Vehicle models can consist of moving constant forces, masses or sprung masses. Provided by the authors and university college dublin. Vehicle bridge dynamic interaction using finite element modelling respect to the bridge centreline is small compared to the ratio of bridge length to bridge width. In addition, vehiclebridge models are separately established in finite element modeling, without consideration of vehicleroadbridge interaction vrbi. Actually, the maximum deflection of a rail bridge and the maximum impact force on a rail bridge significantly depend on the dynamic interaction between wheel and rail and the dynamic characteristics of train and bridge.
The dynamic interaction between a moving vehicle and the sustaining bridge is studied. A practical wheelrail interaction element for modeling. This vehiclebridge interaction modeling was done using a finite element software known as visual bridge design system vbds. Vehiclebridge dynamic interaction using finite element modelling, finite element analysis, david moratal, intechopen, doi. Firstly, diagnosis process should be done to detect the fault or faults that generate high levels of vibrations. The vibration of a river bridge under a moving vehicle is recorded and analyzed. Jun 02, 20 the main objective of this book is to establish efficient numerical models within the framework of finite element method to solve the dynamic response of the vehicle bridge interaction vbi systems for vehicles moving with constant velocity or with acceleration. Vehicle bridge interaction analysis on concrete and steel. For nonuniform continuous bridge in actual projects, the theoretical analysis and field testing of the dynamic response under moving vehicle are carried out.
Thus, no interaction between vehicle bridge and no track irregularities are regarded. Both the bridge and the vehicle system are discretized. Dynamic analysis of coupled vehiclebridge system based on. For evaluating the vehicle, bridge interaction in terms of passenger comfort of a vehicle on a flexible structure for constant velocity has been given in 18. One of the major applications of train rail interaction, for example, 19 proposed a twoaxle vehicle on an eulerbernoulli beam the bridge interaction using finite element model. The number, location and properties of the elements employed in 2d. The vehiclebridge interaction can induce bridge vibration and consequently fatigue, durability deterioration, local damage, and even collapse of bridge structure. Vehiclebridge interaction analysis by dynamic condensation. Recent studies relating to the dynamic response of bridges have been performed to characterize the response of a structure based on the forcing function vehiclebridge interaction and its. This paper proposes a nonlinear multispring tire nmst model for dynamic analysis of vehicle bridge interaction vbi system considering separation and surface roughness. Dynamic analysis of vehiclebridge interaction based on.
Vehiclebridge dynamic interaction using finite element modelling respect to the bridge centreline is small compared to the ratio of bridge length to bridge width. A nonlinear multispring tire model for dynamic analysis of. Therefore, it is necessary to establish a vehicleroadbridge coupling model that is closer to reality, more. Finite element procedures have been developed to treat interaction problems of various complexities, while the analytical solutions established for some typical problems.
The wri element is implemented into a general fe software framework, opensees, and verified by the dynamic analysis of a simplysupported beam subjected to a moving sprung mass. In this way, the road vehicle is modeled in state space and the corresponding motion equations are solved using simulink. Dynamic responses of prestressed bridge and vehicle through. By the method of modal superposition, closedform solutions are obtained for the vertical responses of both the bridge and moving vehicle, assuming the vehiclebridge mass ratio to be small. Dynamic analysis of vehiclebridge interaction system. Recent research and applications of numerical simulation for.
The main objective of this book is to establish efficient numerical models within the framework of finite element method to solve the dynamic response of the vehiclebridge interaction vbi systems for vehicles moving with constant velocity or with acceleration. The main attention is paid to comparing different models of the bridges, in. Recent research and applications of numerical simulation. Dynamic analysis of windvehiclebridge system based on rigid. Finite element analysis of vehiclebridge interaction. Fe analysis of vehiclebridge interaction was conducted using commercial program lsdyna and the super computer at the florida state university. Traditionally, the seismic response analysis of a bridge does not account for the concurrent vehiclebridge dynamic interaction. Vehiclebridge interaction analysis using halfcar model.
Furthermore, a realistic vtb system with a moving fourwheel vehicle is investigated to evaluate the cases where the additional displacement and nonlinear wri should be. Dynamic analysis of a railway bridge subjected to high speed. The study aims at the dynamic analysis of the wvb system based on rigidflexible coupling method, which takes advantage of the high modeling efficiency for structures of fe software and the powerful wheelrail analysis function of mbs software. This paper presents a unified framework for dynamic analysis of vehiclebridge interaction vbi systems using a commercial finite element software suite abaqus. First, the basic theory of vehiclebridge interaction vbi is introduced and a finite element. Using the finite element method, a vehicle is modeled as lumped masses supported by springs and dashpots and a bridge is modeled with rough pavement. Ansysbased spatial coupled vibration analysis method of. Rigidflexible coupled dynamic response of steelconcrete.
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