Article
Construction & Building Technology
Tengfei Wang, Qiang Luo, Liang Zhang, Shiguo Xiao, Hang Fu
Summary: The study found that structures constructed using stabilized cinder generally perform better in terms of dynamic stability. Through property testing of mixtures, field monitoring, and statistical analysis, the impact of train speed on subgrade vibrations was revealed.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Ping Xiang, Minglong Wei, Mengmeng Sun, Qiusheng Li, Lizhong Jiang, Xiang Liu, Jianying Ren
Summary: The study investigates the influence of track irregularity and bridge deformation on the running safety of high-speed railway trains, showing that creep irregularity affects train comfort but not safety, and initial prestressing stress has a significant impact on the residual deformation of bridges.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2021)
Article
Chemistry, Multidisciplinary
Xiangyan Fan, Laijun Liu, Xiaodan Wang, Jincheng Cao, Wenjie Cheng
Summary: This study integrates finite element software ABAQUS with multi-body dynamics software Universal Mechanism (UM) to construct a joint simulation model of the train-track-overhead system. The findings demonstrate the sensitivity of the train body's response to track irregularity and the influence of speed on system safety.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Civil
Zhaowei Chen
Summary: A methodology is proposed to study the dynamic contact behaviors between CRTS II slab track and bridges subject to time-dependent effects of the bridge. The results show that gaps appear at beam-end locations, and the gap length decreases significantly with the running train. Impacts of concrete creep and shrinkage on train vibrations are significant, while they have minimal effect on track-bridge vibrations. Interlayer forces of tracks are greatly affected by bridge deformation and running trains.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Lili Liu, Lizhong Jiang, Wangbao Zhou, Xiang Liu, Donghang Peng, Yuanjun Chen
Summary: This study aims to investigate the mapping relationship between girder deformation and rail deformation in the high-speed railway (HSR)-China Railway Track System III (CRTS III) slab ballastless track (SBT)-simply-supported bridge system. The additional irregularity of the rail is deduced theoretically and a dynamic model of the high-speed train-track-bridge (TTB) coupling system is established. The dynamic response of two train models (CRH2 and ICE3 trains) is analyzed using the coupling system model, and recommended thresholds of girder deformation are provided for running safety and ride comfort.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Chemistry, Analytical
Diogo Ribeiro, Rui Calcada, Maik Brehm, Volkmar Zabel
Summary: This article validates a 3D dynamic interaction model of a train-track-bridge system on a bowstring-arch railway bridge through experimental tests. The model incorporates large-scale finite element models of the train, track, and bridge subsystems, calibrated using experimental modal parameters. A dedicated computational application called TBI software is used to efficiently solve the train-bridge dynamic interaction problem. The validation process involves comparing the numerical and experimental results in terms of accelerations, displacements, and strains, and shows a very good correlation between the two.
Article
Engineering, Civil
Huoyue Xiang, Wenyuan Ren, Congjie Shang, Jin Zhu, Yongle Li
Summary: This study tested the aerodynamic characteristics of vehicles under train-induced winds using a moving vehicle model and established a coupled vibration model of the train-vehicle-bridge system considering train-induced winds. Taking a rail-cum-road bridge with single-level arrangement as an example, the coupled vibration of the train-vehicle-bridge system considering train-induced winds was analyzed, and the influence of train-induced winds and the lateral spacing between trains and vehicles on the system was discussed. The results showed that train-induced winds decrease with the increase of the lateral spacing between trains and vehicles. The study also highlighted the impact of train-induced winds on vehicle response and the role of road conditions and anti-dazzle plates in traffic safety.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2023)
Article
Engineering, Mechanical
Marek Szafranski
Summary: This paper discusses the methodology of defining the bridge-vehicle dynamic model based on free response measurements and identifies global modal parameters of two structures using modal identification techniques. Field tests are conducted to validate numerical models, and numerical simulations of train passing over bridges are compared with in situ measurements.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Engineering, Marine
Aksel Fenerci, Knut Andreas Kvale, Xu Xiang, Ole Oiseth
Summary: This paper investigates the effects of hydrodynamic interaction on the dynamic response of floating bridge pontoons under wind and wave loading. The results show significant differences in girder section forces when considering the hydrodynamic interaction effects, indicating the importance of considering these effects in the design of such structures.
Article
Chemistry, Multidisciplinary
Emrah Erduran, Christian Nordli, Semih Gonen
Summary: This article presents a numerical study on the impacts of elastomeric bearing stiffness on the dynamic behavior of railway bridges under train-induced vibrations. The results show that the amplitude and location of maximum acceleration on the bridge heavily depend on the stiffness of the bearings.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Hongyin Yang, Nanhao Wu, Wei Zhang, Zhangjun Liu, Jianfeng Fan, Changjun Wang
Summary: In this paper, an improved spatial vehicle-track-bridge interaction system considering the unsupported track is proposed. The numerical analysis shows that the unsupported track has a significant impact on the wheel-rail contact force and affects the acceleration of the bridge. The displacement and acceleration of the track increase significantly with the expansion of supported defects and driving speed. The dynamic response of unilateral unsupported sleepers is slightly smaller than that of bilateral unsupported sleepers.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Civil
Kodai Matsuoka, Mizuki Tsunemoto, Munemasa Tokunaga
Summary: This study examines the dynamic behavior of poles installed on bridges and provides a simple calculation method and guidelines for bridge design and overhead contact line system (OCS) maintenance. The results show that resonance between the train's excitation frequency and the bridge and pole frequencies can cause dominant vibration of the poles, posing a risk of wire fatigue. A simple calculation approach based on a theoretical model is developed for practical use.
ENGINEERING STRUCTURES
(2022)
Article
Acoustics
Su-Mei Wang, Yi-Qing Ni, You-Gang Sun, Yang Lu, Yuan-Feng Duan
Summary: In this study, a new method for modelling and studying the dynamic coupling interaction of the maglev train-controller-rail-bridge (TCRB) system is proposed. By utilizing vector mechanics principles and vector form intrinsic finite elements, the difficulties in modelling the TCRB system are overcome. The proposed method is validated and evaluated to analyze the resonant characteristics of the maglev system and the conditions for levitation gap resonance.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Transportation Science & Technology
Guishuai Feng, Liang Zhang, Qiang Luo, Tengfei Wang, Hongwei Xie
Summary: A monitoring project was conducted on the Watang-Rizhao heavy-haul railway trial sections to examine the impact of train speed on the dynamic response of the substructures.
INTERNATIONAL JOURNAL OF RAIL TRANSPORTATION
(2022)
Article
Engineering, Geological
Hong Qiao, Zuhao Dai, Xianting Du, Chenyu Wang, Peiheng Long, Chiyu Jiao
Summary: In this study, an analytical model for a train-bridge system considering valley topography was established. The influences of the height-to-width ratio of the valley topography, the shear wave velocity of the site soil, and the incident angle of the seismic wave on the seismic responses and running safety of the train-bridge coupled system were investigated. The results showed that the shear wave velocity of the site soil and the incident angle of the seismic wave affected the seismic responses in terms of peak occurrence time, while the height-to-width ratio of the valley topography and the incident angle of the seismic wave influenced the peak values of seismic responses.
BULLETIN OF EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Civil
Eline Vereecken, Wouter Botte, Geert Lombaert, Robby Caspeele
Summary: Concrete bridges in many countries are aging and showing signs of deterioration, posing questions about their safety level. Information from different tests is used to improve safety level estimates, but combining data from various tests can be challenging. A methodology using Bayesian framework is developed to update service life models for concrete girders, focusing on strain and modal data.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Engineering, Civil
Eline Vereecken, Wouter Botte, Geert Lombaert, Robby Caspeele
Summary: This study focuses on the corrosion of reinforced concrete structures and aims to improve the accuracy of reliability prediction by using measurements of static strain data. Modeling errors may arise due to an inadequate choice of the spatial correlation model, leading to a bias in the distribution of the reliability index. Different correlation models are investigated to find the most robust spatial correlation model.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Tobias Barbier, Emad Shakour, Ole Sigmund, Geert Lombaert, Mattias Schevenels
Summary: The article presents a novel strategy for structural topology optimization considering damage, with two different optimization strategies: fully nonlinear and simplified. The simplified strategy, while less accurate than nonlinear models, shows similar optimized topologies and structural efficiency, with a significant improvement in computation time.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
(2022)
Article
Engineering, Mechanical
K. Maes, L. Van Meerbeeck, E. P. B. Reynders, G. Lombaert
Summary: This paper investigates the feasibility of structural health monitoring based on natural frequencies for a steel bowstring railway bridge in Leuven, Belgium. Data from an ongoing long-term monitoring campaign on the bridge, including acceleration measurements on the bridge deck and the arches, are used in the study. The research focuses on removing the effects of environmental conditions, such as temperature, which can impact the modal characteristics of the structure and lead to false-positive or false-negative damage detection. Through comparing standard linear regression and robust principal component analysis (PCA), the study aims to assess the success rate of these techniques in removing natural frequency variations resulting from changes in environmental conditions, considering both the actual retrofit and smaller structural modifications.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Computer Science, Interdisciplinary Applications
J. Wambacq, J. Ulloa, G. Lombaert, S. Francois
Summary: This paper presents a computational model for unreinforced masonry structures that includes softening plasticity for mortar joints and a brittle phase-field model for brick fracture. The model is derived in an energetic framework, accounting for non-associative behavior of mortar joints, and a numerical solution scheme is proposed. The model is applied to four numerical examples, demonstrating its ability to capture masonry failure mechanisms and compute complex crack topologies.
COMPUTERS & STRUCTURES
(2022)
Article
Acoustics
Carolina Decraene, Geert Lombaert, Edwin P. B. Reynders
Summary: This paper efficiently computes the diffuse sound transmission through a wall or floor using a hybrid approach. It models the wall deterministically with finite element method and models the rooms as stochastic subsystems. The study extends the approach to more complicated finite-sized building elements with spatial periodicity using periodic structure theory.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Engineering, Civil
Freddie Theland, Geert Lombaert, Stijn Francois, Costin Pacoste, Fanny Deckner, Peter Blom, Jean-Marc Battini
Summary: This paper presents novel measurement data on the dynamic soil-structure interaction of an end-bearing pile foundation. The results show that the individual pile impedances are overestimated compared to the measurements, while the interaction factors show a better agreement. Additionally, the experimental results validate the pile-soil-pile interaction results from previous numerical studies.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Eline Vereecken, Arthur Slobbe, Arpad Rozsas, Wouter Botte, Geert Lombaert, Robby Caspeele
Summary: This work investigates a reinforced concrete slab bridge and calibrates a finite element model based on field data. The study compares the effectiveness of model selection based on log evidence and posterior predictive capabilities. It is found that using only log evidence for model selection can be debatable, as models performing well based on log evidence may not necessarily generate the most accurate posterior predictions. Additionally, introducing spatial variation of stiffness and including a global model bias can improve the accuracy of the posterior predictions.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Engineering, Civil
Antonia M. Kohl, Kim-Denise Clement, Jens Schneider, Andrei Firus, Geert Lombaert
Summary: The study finds that the current Eurocode 1 method based on bridge span is too conservative and underestimates the interaction effects between high-speed trains and bridges. Therefore, this paper investigates 25 real high-speed passenger trains and over 100 single-span bridges with spans ranging from 5 m to 55 m, and finds that recent additional damping approaches based on bridge and train characteristics are more reliable, but require the public availability of train characteristics and an extension to articulated and heterogeneous trains.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Menno van de Velde, Kristof Maes, Geert Lombaert
Summary: The railway bridge KW51 in Leuven, Belgium has been monitored since October 2018 to validate different techniques for structural health monitoring. The displacement and strain measurements of the bridge show a nonlinear behavior due to friction in the pot bearings. This paper presents and validates a methodology for modeling the observed nonlinear behavior of the pot bearings, which is important for understanding and reproducing the bridge behavior under combined train and thermal loading.
JOURNAL OF BRIDGE ENGINEERING
(2023)
Article
Engineering, Mechanical
K. Maes, G. Lombaert
Summary: Virtual sensing allows for extrapolating response data measured at a limited number of locations to other points of interest on a structure. This paper investigates the use of virtual sensing for stress/strain monitoring on steel railway bridges, using strain measurements obtained from an in situ monitoring campaign. The study proposes a methodology to accurately predict strain by extending strain data with longitudinal displacement measurements at bearings.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Review
Engineering, Multidisciplinary
Eline Vandecruys, Eline Vereecken, Dimitrios Anastasopoulos, Els Verstrynge, Robby Caspeele, Edwin Reynders, Geert Lombaert
Summary: Corrosion is a common problem in RC structures, which leads to decreased durability and structural capacity. Vibration-based monitoring is useful in studying the global response of deteriorated structures. This study provides an overview and assessment of existing literature on dynamic tests of corroded RC beams, aiming to critically review the current knowledge and challenges. Experimental test programs are conducted to identify the challenges in VBM of corroding RC beams, with a focus on the change in natural frequencies.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2023)
Review
Construction & Building Technology
Balsa Jovanovic, Robby Caspeele, Geert Lombaert, Edwin Reynders, Ruben Van Coile
Summary: Fires, although rare, can significantly impact the structure. Concrete, a durable noncombustible material, can still be damaged. A comprehensive post-fire assessment is crucial to determine the condition of the structure and decide the appropriate actions. This paper reviews the current knowledge on post-fire assessment of concrete structures, including commonly used techniques, their advantages and disadvantages, case studies, and research needs.
STRUCTURAL CONCRETE
(2023)
Article
Engineering, Civil
Eline Vandecruys, Menno van de Velde, Edwin Reynders, Geert Lombaert, Els Verstrynge
Summary: This paper presents an elaborate experimental study to effectively monitor chloride-induced corrosion damage in reinforced concrete beams. A combined method of acoustic emission sensing and vibration-based monitoring is developed to detect, characterise and localise damage. It was found that acoustic emission sensing can accurately detect and localise damage before cracking of the concrete, while vibration-based monitoring provides absolute information about the stiffness decrease due to corrosion damage.
ENGINEERING STRUCTURES
(2023)
Proceedings Paper
Mathematics, Applied
Philippe Blondeel, Pieterjan Robbe, Stijn Francois, Geert Lombaert, Stefan Vandewalle
Summary: This paper investigates how to incorporate uncertainty modeled as a random field into the finite element model using the p-MLQMC method. By using the integration point method, the paper explores different approaches for selecting evaluation points of the random field to achieve variance reduction. The local nested approach is found to significantly improve computational runtime compared to the non-nested approach for a given tolerance.
MONTE CARLO AND QUASI-MONTE CARLO METHODS, MCQMC 2020
(2022)
Article
Acoustics
Sandip Chajjed, Mohammad Khalil, Dominique Poirel, Chris Pettit, Abhijit Sarkar
Summary: This paper reports the generalization of the Bayesian formulation of the flutter margin method, which improves the predictive performance by incorporating the joint prior of aeroelastic modal parameters. The improved algorithm reduces uncertainties in predicting flutter speed and can cut cost by reducing the number of flight tests.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pascal Zeise, Bernhard Schweizer
Summary: Air ring bearings are an improved version of classical air bearings, providing better damping behavior and allowing operation above the linear threshold speed of instability. However, there is a risk of dangerous vibrations in certain rotor systems, which can be addressed by considering ring tilting effects.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Zbynek Sika, Jan Krivosej, Tomas Vyhlidal
Summary: This paper presents a novel design of a compact six degrees of freedom active vibration absorber with six identical eigenfrequencies. The objective is to completely suppress the vibration of a machine structure with six motion components. By utilizing a Stewart platform structure equipped with six active legs, a spatial unifrequency absorber with six identical eigenfrequencies is achieved. The design is optimized using a correction feedback and active delayed resonator feedback.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kai Li, Yufeng Liu, Yuntong Dai, Yong Yu
Summary: This paper presents a novel light-powered self-oscillating liquid crystal elastomer (LCE) bow that can self-oscillate continuously and periodically under steady illumination. The dynamics of the LCE bow are theoretically investigated and numerical calculations predict its motion regimes. The suggested LCE bow offers potential advantages in terms of simple structure, customizable size, flexible regulation, and easy assembly.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Carmelo Rosario Vindigni, Giuseppe Mantegna, Calogero Orlando, Andrea Alaimo
Summary: In this study, a simple adaptive flutter suppression system is designed to increase the operative speed range of a wing-aileron aeroelastic plant. The system achieves almost strictly passivity by using a parallel feed-forward compensator implementation and the controller parameters are optimized using a population decline swarm optimization algorithm. Numerical simulations prove the effectiveness of the proposed simple adaptive flutter suppression architecture in different flight scenarios.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Nicco Ulbricht, Alain Boldini, Peng Zhang, Maurizio Porfiri
Summary: The quantification of fluid-structure interactions in marine structures is crucial for their design and optimization. In this study, an analytical solution for the free vibration of a bidirectional composite in contact with a fluid is proposed. By imposing continuity conditions and boundary conditions, the coupled fluid-structure problem is solved and applied to sandwich structures in naval construction, offering insights into the effects of water on mode shapes and through-the-thickness profiles of displacement and stress.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Shahram Hadian Jazi, Mostafa Hadian, Keivan Torabi
Summary: Non-uniformity and damage are the main focus in studying vibrations of beam elements. An exact closed-form explicit solution for the transverse displacement of a nonuniform multi-cracked beam is introduced using generalized functions and distributional derivative concepts. By introducing non-dimensional parameters, the motion equation and its closed-form solution are obtained based on four fundamental functions. The impact of crack count, location, intensity, and boundary conditions on natural frequency and mode shape is evaluated through numerical study.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Eugenio Tramacere, Marius Pakstys, Renato Galluzzi, Nicola Amati, Andrea Tonoli, Torbjoern A. Lembke
Summary: This paper proposes the experimental stabilization of electrodynamic maglev systems by means of passive components, providing key technological support for the Hyperloop concept of high-speed and sustainable transportation.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pengfei Deng, Xing Tan, He Li
Summary: In this paper, the authors improve the surface morphology method and study the bit-rock interaction model between the rock and the PDC bit, taking into account the impact of blade shape and cutter arrangement. They establish a dynamic model for a deep drilling system equipped with an arbitrary shape PDC bit and propose a stability prediction method. The results show that the shape of the blades and arrangement of the cutters on the PDC bit significantly affect the nonlinear vibration of the drilling system.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Salvador Rodriguez-Blanco, Javier Gonzalez-Monge, Carlos Martel
Summary: In modern LPT designs, the simultaneous presence of forced response and flutter in different operation regimes is unavoidable. Recent evidence suggests that the traditional linear superposition method may be overly conservative. This study examines the flutter and forced response interaction in a realistic low pressure turbine rotor and confirms that the actual response is much smaller than that predicted by linear superposition.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kabilan Baskaran, Nur Syafiqah Jamaluddin, Alper Celik, Djamel Rezgui, Mahdi Azarpeyvand
Summary: This study investigates the impact of the number of blades on the aeroacoustic characteristics and aerodynamic performance of propellers used in urban air mobility vehicles. The results show that different blade numbers exhibit distinct noise levels, providing valuable insights for further research on propeller noise and aerodynamic performance.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Yongbo Peng, Peifang Sun
Summary: This study focuses on the reliability-based design optimization (RBDO) of the tuned mass-damper-inerter (TMDI) system under non-stationary excitations. The performance of the optimized TMDI system is evaluated using probability density evolution analysis. The results demonstrate the technical advantages of TMDI, including high vibration mitigation performance, considerable mass reduction, and less stroke demand.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Guanfu Lin, Zhong-Rong Lu, Jike Liu, Li Wang
Summary: Vision-based measurement is an emerging method that enables full-field measurement with non-contact and high spatial resolution capabilities. This paper presents a single-camera method for measuring out-of-plane vibration of plate structures using motion-parametric homography to capture image variation and displacement response.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Bronislaw Czaplewski, Mateusz Bocian, John H. G. Macdonald
Summary: Despite two decades of study, there is currently no model that can quantitatively explain pedestrian-generated lateral forces. This research proposes a foot placement control law based on empirical data to calibrate and generalize the rigid-leg inverted pendulum model (IPM) for predicting lateral structural stability.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Justine Carpentier, Jean-Hugh Thomas, Charles Pezerat
Summary: This paper proposes an improved method for the identification of vibration sources on a car window using the corrected force analysis technique. By redefining inverse methods in polar coordinates, more accurate results can be obtained.
JOURNAL OF SOUND AND VIBRATION
(2024)
