Finite element procedures have been developed to treat interaction problems of various complexities, while the analytical solutions established for some typical problems. Dynamic vehiclebridge interaction under simultaneous. The governing equations of a vehicle model with twelvedegreesoffreedom 12dof are derived from the energy method using the lagrange equation of motion. Stress analysis of rigid hanger of railway arch bridge. This paper presents a unified framework for dynamic analysis of vehiclebridge interaction vbi systems using a commercial finite element software suite abaqus.
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. Based on commercial fe software ansys and mbs software simpack, the rigidflexible. Dynamic analysis of a railway bridge subjected to high speed. Dynamic analysis of a railway bridge subjected to high.
Thus, no interaction between vehicle bridge and no track irregularities are regarded. Vehiclebridge interaction element for dynamic analysis. 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. Interactions between vehicle and bridge include multibody dynamics of vehicle, structural dynamics of bridge and wheelrail contact relationships. Analysis and simulation of the vehiclebridgeinteraction in. Dynamic analysis of vehiclebridge interaction based on interfacial contact algorithm. 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. Coupled vibration analysis of vehiclebridge system based. Nonlinear vibration analysis of vehiclebridge interaction. Finite element analysis framework for dynamic vehicle. This paper presents the dynamic soilbridge interaction under highspeed railway lines, under different soil stiffness conditions. Dynamic analysis of vehiclebridge interaction based on. 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.
As a result, the dynamical analysis time histories of contact forces are saved. Provided by the authors and university college dublin. An intersystem iteration method is proposed for dynamic analysis of coupled vehiclebridge system. 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. Theoretically, the analysis model for the vehicle bridge system is composed of two subsystems, the mov. 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. The analysis has been performed modelling the train as a series of point loads. 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 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. 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.
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. Then one obtains the dynamic analysis model by using the finite element method and the vehiclebridge interaction equation based on the. The dynamic analysis model of the cablestayed bridge is established by finite element method, and the natural vibration properties of the bridge are analyzed. Fe analysis of vehiclebridge interaction was conducted using commercial program lsdyna and the super computer at the florida state university. The main attention is paid to comparing different models of the bridges, in. Coupled analysis is a wide topic covered in several publications, i recommend vehiclebridge interaction dynamics yang, yau and wu, 2004. Vehiclebridge interaction has been studied for a long time to investigate the structural behavior of bridges and vehicle ride comfort. A nonlinear multispring tire model for dynamic analysis. In order to analyze the dynamic responses of the bridge and the vehicle with. Dynamic analysis of windvehiclebridge system based on rigid. An intersystem iteration method is proposed for dynamic analysis of coupled vehicle bridge system. Dynamic responses of prestressed bridge and vehicle through. Such a problem is generally solved by a numerical simulation based on a dynamic interaction model for the whole vehicle bridge system.
The train crosses the bridge at constant speed and is represented by moving axle forces. The influences of different types and sizes of hangers on the dynamic characteristics of the bridge were compared. Numerical models for vehiclebridge interaction dynamic. For high speed or heavy trains a dynamic analysis is nec. 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. This paper presents a practical framework for estimating the fatigue life of suspenders under repeated traffic loads by taking a threepylon suspension bridge as an example. This paper proposes a nonlinear multispring tire nmst model for dynamic analysis of vehiclebridge interaction vbi system considering separation and surface roughness. Ansysbased spatial coupled vibration analysis method of. First, a nonlinear singlespring tire nsst model is developed, which can only provide compression force rather than extension force. A vehicle model is presented, and the dynamic load on the bridge is quantified based on bridge road roughness. Key features are the 3d formulations for both the vehicle system and the bridge system, and. 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.
Materials free fulltext fatigue life estimation for. Dynamic analysis of road vehiclebridge systems under turbulent wind by means of finite element models. Firstly, eulerlagrange equation is applied to derive the vibration equation of threeaxle vehicle. Random vibration analysis of dynamic vehiclebridge. Analysis and simulation of the vehiclebridgeinteraction. Analysis and simulation of the vehiclebridgeinteraction in horizontally. 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. Jun 15, 20 the commercial operation of the bullet train in 1964 in japan marked the beginning of a new era for highspeed railways. Vehicle bridge dynamic interaction using finite element modelling, finite element analysis, david moratal, intechopen, doi.
A practical wheelrail interaction element for modeling. 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. 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. In this paper, we investigate vehiclebridge interactions and propose a new method for assessing bridge conditions based on nonlinear vibration analysis. An analytical procedure of dynamic interaction analysis of the straddle monorail bridgevehicle coupling system is proposed in this paper based on the finite element method and energy method. This vehiclebridge interaction modeling was done using a finite element software known as visual bridge design system vbds. Vehicle models can consist of moving constant forces, masses or sprung masses. Vehiclebridge dynamic interaction using finite element modelling. Road vehiclebridge interaction considering varied 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 modeling and outputting. Then the obtained wheeltorail contact forces are applied to the femodel of a bridge as running loads at the points that correspond to the positions of the wheels, figure 4. This paper proposes a nonlinear multispring tire nmst model for dynamic analysis of vehicle bridge interaction vbi system considering separation and surface roughness. Vehicleinduced random vibration of railway bridges. First, the basic theory of vehiclebridge interaction vbi is introduced and a finite element. Development and interaction of a detailed truck using proper design standards were applied to realistically represent the actual loading conditions. 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. The finite element model for the bridge is established and solved using ansys. The comparison of different approaches to model vehiclebridge interaction.
For high speed or heavy trains a dynamic analysis is necessary because of the potential for resonance of the bridge structures. Finite element analysis framework for dynamic vehiclebridge. Recent research and applications of numerical simulation for. Road vehiclebridge interaction considering varied vehicle speed. The element derived is referred to as the vehicle bridge interaction element, which has the same number of degrees of freedom dof as the parent element, while possessing the properties of. Vehiclebridge dynamic interaction using finite element modelling 26. For nonuniform continuous bridge in actual projects, the theoretical analysis and field testing of the dynamic response under moving vehicle are carried out. Dynamic analysis of windvehiclebridge system based on rigidflexible coupling method. Vehicle bridge interaction has been studied for a long time to investigate the structural behavior of bridges and vehicle ride comfort. 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. 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. The calculation procedure is programmed with vb language for the solution of the governing motion equations of the straddletype monorail bridgevehicle coupling system. Firstly, this study proposes an original scheme for the threedimensional 3d analysis of the dynamic interaction between trains and horizontally curved railway bridges. Vehiclebridge dynamic interaction using finite element modelling respect to the bridge centreline is small compared to the ratio of bridge length to bridge width.
Dynamic response analysis of the straddletype monorail. Vehicle bridge interaction analysis on concrete and steel. Based on the established vehiclebridge coupling vibration model, the. Starting from the analysis of a simply supported eulerbernoulli beam model subjected to moving loads, a threedimensional multibody soilabutmentbridgeballastsleeperrail model formulated in the time domain to study the. Study of direct finite element method of analysing soil. 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. 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. Dynamic analysis of nonuniform continuous girder bridge. A simplified numeric method is developed for solving the interaction problem, considering the effect of random road roughness and its velocity term. Dynamic analysis of windvehiclebridge system based on. 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. The vibration of a river bridge under a moving vehicle is recorded and analyzed.
Vehiclebridge dynamic interaction using finite element modelling, finite element analysis, david moratal, intechopen, doi. Request pdf finite element analysis framework for dynamic vehiclebridge interaction system based on abaqus this paper presents a. These models were improved over the years in better structural modelling, wheelrail interactions, and integration solution approaches. 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.
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. Dynamic analysis of vehicle bridge interaction based on interfacial contact algorithm. The comparison of different approaches to model vehiclebridge. In addition, vehiclebridge models are separately established in finite element modeling, without consideration of vehicleroadbridge interaction vrbi. Vehiclebridge interaction analysis using halfcar model. To account for the bouncing or suspension action of the moving vehicle, a spring can be attached to the moving mass to result in the sprung mass model shown in fig. This is the simplest model that can be used to study the dynamic interaction between the moving vehicle and the supporting bridge. Pdf the objective of this study is to develop an element that is both accurate and efficient for modeling the vehiclebridge interaction vbi in. Random vibration analysis of dynamic vehiclebridge interaction due to road unevenness geert lombaert1 and joel p. Effect of dead, live and blast loads on a suspension bridge.
Recent research and applications of numerical simulation. Dynamic analysis of coupled vehiclebridge system based on. We focus on strctural health monitoring, dynamic analysis and performance prediction. Bridge models can be continuous or made of discretized finite elements. 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. 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. Therefore, it is necessary to establish a vehicleroadbridge coupling model that is closer to reality, more efficient, and accounts for the actual tire effect. An ansysbased spatial approach of analysis is proposed for the bridgevehicle interaction to investigate the dynamic responses of a curved concrete box girder bridge and vehicles.
The behavior of the vehiclebridge system is a complex coupled timevarying dynamic problem. Fe analysis of vehicle bridge interaction was conducted using commercial program lsdyna and the super computer at the florida state university. For this reason, conventional assembly procedures can be employed to forming the structure equations. Fatigue damage of suspenders is a main concern during the lifecycle maintenance of arch bridges and suspension bridges. In order to study the stress of two new types of rigid hangers circular steel and flatplate rigid hangers on the railway arch bridges, a finite element model of a railway through arch bridge was established. It is true in the past two decades that researchers continue to develop vehicle models of various. 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. 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. The vehicle bridge interaction can induce bridge vibration and consequently fatigue, durability deterioration, local damage, and even collapse of bridge structure. 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. Rigidflexible coupled dynamic response of steelconcrete. Random vibration analysis of dynamic vehicle bridge interaction due to road unevenness geert lombaert1 and joel p. 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.
Jul 30, 2018 this paper presents the dynamic soilbridge interaction under highspeed railway lines, under different soil stiffness conditions. The dynamic interaction between a moving vehicle and the sustaining bridge is studied. 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. Ace advances in civil engineering 16878094 16878086 hindawi 10. We conduct filed experiments, lab experiments and perform simulations using finite element analysis fea software such as abaqus on powerful worktations. Thus, no interaction between vehiclebridge and no track irregularities are regarded. In this way, the road vehicle is modeled in state space and the corresponding motion equations are solved using simulink. By the method of modal superposition, closedform solutions are obtained for the vertical responses of both the bridge and moving vehicle, assuming the vehicle bridge mass ratio to be small. 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. Coupled vibration analysis of vehiclebridge system based on. The vehiclebridge interaction can induce bridge vibration and consequently fatigue, durability deterioration, local damage, and even collapse of bridge structure. Force element is utilized to define the interaction between.
The element derived is referred to as the vehiclebridge interaction element, which has the same number of degrees of freedom dof as the parent element, while possessing the properties of symmetry and bandedness in element matrices. Starting from the analysis of a simply supported eulerbernoulli beam model subjected to moving loads, a threedimensional multibody soilabutmentbridgeballastsleeperrail model formulated in the time domain to study the vibrations induced due. 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 interaction element for dynamic analysis article pdf available in journal of structural engineering 12311. Coupled analysis is a wide topic covered in several publications, i recommend vehicle bridge interaction dynamics yang, yau and wu, 2004. Vehiclebridge dynamic interaction using finite element. 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. Pdf vehiclebridge interaction element for dynamic analysis. Finite element analysis of vehiclebridge interaction.
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