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Journal articles on the topic 'Single track model'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Son, Seok-Woo, Mingfang Ting, and Lorenzo M. Polvani. "The Effect of Topography on Storm-Track Intensity in a Relatively Simple General Circulation Model." Journal of the Atmospheric Sciences 66, no. 2 (2009): 393–411. http://dx.doi.org/10.1175/2008jas2742.1.

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Abstract The effect of topography on storm-track intensity is examined with a set of primitive equation model integrations. This effect is found to be crucially dependent on the latitudinal structure of the background flow impinging on the topography. If the background flow consists of a weak double jet, higher topography leads to an intensification of the storm track downstream of the topography, consistent with enhanced baroclinicity in that region. However, if the background flow consists of a strong single jet, topography weakens the storm track, despite the fact that the baroclinicity dow

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2

Chien, Shih-Kai, Kuo-Teng Tsai, Yueh-Heng Li, Yu-Ting Wu, and Wen-Lih Chen. "A Simple and Accurate 3D Numerical Model for Laser Cladding." Journal of Mechanics 36, no. 1 (2019): 19–33. http://dx.doi.org/10.1017/jmech.2019.30.

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ABSTRACTA simple numerical model has been proposed for laser cladding. The model does not involve complex techniques such as cell addition, moving mesh, or prescribing a clad profile with a certain polynomial function. Instead, a mass function has been introduced to register the clad mass deposition on substrate, and from which the clad-track height can be estimated. The model takes several operational parameters, laser power, laser-head speed, and clad powder feeding rate, into consideration and predicts clad-track geometry, dilution, and substrate temperature. Experiments using two different

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3

Choi, Jung-Youl, and Sun-Hee Kim. "Qualitative Prediction Model for Dynamic Behavior of Ballasted Tracks." Applied Sciences 10, no. 18 (2020): 6258. http://dx.doi.org/10.3390/app10186258.

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Theoretical, experimental, analytical, and statistical evaluations were performed to predict and assess the dynamic behavior of a ballasted track, such as the track support stiffness, track impact factor, or dynamic wheel–rail forces. Field measurements were then performed to evaluate the dynamic behavior of the ballasted track and its components. A qualitative prediction model was then developed to predict and assess track performance as a function of dynamic wheel-rail force and variation in track support stiffness. The developed two-degree-of-freedom dynamic track model can define the rail

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4

Qi, Yayun, Huanyun Dai, Jianjin Yang, and Kun Xu. "Dynamic Analysis of Vehicle Track Coupling Based on Double Beam Track Model." Shock and Vibration 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/7469894.

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The rail was considered as double Timoshenko beam in this paper, applied to the vehicle track coupling dynamics model; the Hertz nonlinear method is used to calculate the wheel rail contact force. Wheel rail vertical force and response of vehicle are calculated by using the model under random irregularity and single harmonic excitation; at the same time, wheel rail force and vertical acceleration response of 3-order, 10-order, and 19-order wheel polygon were calculated. The results show that, under the excitation of random irregularity, the wheel rail vertical force of two models was very clos

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5

Murnane, Daniel. "Influencer Loss: End-to-end Geometric Representation Learning for Track Reconstruction." EPJ Web of Conferences 295 (2024): 09016. http://dx.doi.org/10.1051/epjconf/202429509016.

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Significant progress has been made in applying graph neural networks (GNNs) and other geometric ML ideas to the track reconstruction problem. State-of-the-art results are obtained using approaches such as the Exatrkx pipeline, which currently applies separate edge construction, classification and segmentation stages. One can also treat the problem as an object condensation task, and cluster hits into tracks in a single stage, such as in the GravNet architecture. However, condensation with such an architecture may still require non-differentiable operations, and arbitrary post-processing. In th

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6

DING, Nenggen. "Driver Model for Single Track Vehicle Based on Single Point Preview Optimal Curvature Model." Chinese Journal of Mechanical Engineering 44, no. 11 (2008): 220. http://dx.doi.org/10.3901/jme.2008.11.220.

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7

Auersch, Lutz, and Jiaojiao Song. "Dynamic Damage Quantification of Slab Tracks—Finite Element Models on Winkler Soil and Finite-Element Boundary-Element Models on Continuous Soil." CivilEng 3, no. 4 (2022): 979–97. http://dx.doi.org/10.3390/civileng3040055.

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Train passages over intact or damaged slab tracks on different soils were calculated by two methods. The finite element method (FEM) uses a Winkler soil under the track model by adding a thin “soil layer”. The combined finite-element boundary-element method has a continuous soil model that is included by the boundary element method. The basic results are the distributions of the track (rail, track plate, and base layer) displacements along the track for a single axle load. These solutions were superposed to a complete train load and transformed to time histories. The influence of track and soi

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8

Sun, Jian Feng, Yong Qiang Yang, Jie Liu, and Di Wang. "Mathematical Model of Ti-6Al-4V Single Track Formed by Selective Laser Melting." Advanced Materials Research 602-604 (December 2012): 2074–77. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.2074.

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The single track is the basis of the multi-track overlapping and multi-layer molding in the accumulative manufacturing, and its quality determines the quality of the parts after their being manufactured. The single track experiment on Ti-6Al-4V powders has used Matlab software to fit the experimental data so as to establish the mathematical model. As a result, the experiment has revealed the functional relationships among the width, layer thickness, and power/speed of Ti-6Al-4V selective laser melting single track; and its relationships between its width and layer thickness, width and power/sp

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9

Milan, Janić. "A practical capacity model of a single track line." Transportation Planning and Technology 12, no. 3-4 (1988): 301–18. http://dx.doi.org/10.1080/03081068808717380.

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10

Badji, B., E. Fenaux, M. El Bagdouri, and A. Miraoui. "Nonlinear single track model analysis using Volterra series approach." Vehicle System Dynamics 47, no. 1 (2009): 81–98. http://dx.doi.org/10.1080/00423110801910957.

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11

Yao, Yao, Peike Li, Boyu Chen, and Alex Wang. "JEN-1 Composer: A Unified Framework for High-Fidelity Multi-Track Music Generation." Proceedings of the AAAI Conference on Artificial Intelligence 39, no. 13 (2025): 14459–67. https://doi.org/10.1609/aaai.v39i13.33584.

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With rapid advances in generative artificial intelligence, the text-to-music synthesis task has emerged as a promising direction for music generation. Nevertheless, achieving precise control over multi-track generation remains an open challenge. While existing models excel in directly generating multi-track mix, their limitations become evident when it comes to composing individual tracks and integrating them in a controllable manner. This departure from the typical workflows of professional composers hinders the ability to refine details in specific tracks. To address this gap, we propose JEN

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12

Wang, Fu Ming, Ming Zhang Zhu, Hua Ma, Xin Qian Zheng, and Yun Lin. "A Track Following Visual Navigation Model Car Based on FPGA." Applied Mechanics and Materials 336-338 (July 2013): 1296–302. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1296.

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A novel adaptive track finding algorithm is designed, which combines the function of track finding and image binarization. The combination of these two functions allows the system to determine the binarization threshold adaptively, and perform accurate visual navigation in diverse lighting and track conditions. A circular arc path planning strategy with a single measurable control parameter is used to guide the model car to the track. The circular arc path planning strategy is easy to implement and delivers fast and accurate responses to the track.

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13

Abdussalam, Ali Ahmed, Ahmed Elzarook Barood Faraj, and S. Khalifa Munir. "Vehicle yaw rate simulation and control based on single-track model." World Journal of Advanced Research and Reviews 10, no. 1 (2021): 019–29. https://doi.org/10.5281/zenodo.4733306.

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When designing a vehicle, the most important variable that should be taken into account is the vehicle yaw rate, it represents an important indication of the vehicle’s stability and control. This paper aims to demonstrate how to simulate and control the yaw rate of a vehicle using two control methods, the first is the Linear Quadratic control method (LQR) and the other one is neural network control. The classical single-track model is prominently used for yaw stability control analysis. One driving conditions performed is the steering input; the steering input in this work is set as step

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14

Fraikin, Nicolas, Kilian Funk, Michael Frey, and Frank Gauterin. "A fast and accurate hybrid simulation model for the large-scale testing of automated driving functions." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 4 (2019): 1183–96. http://dx.doi.org/10.1177/0954407019861245.

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The upcoming market introduction of highly automated driving functions and associated requirements on reliability and safety require new tools for the virtual test coverage to lower development expenses. In this contribution, a computationally efficient and accurate simulation environment for the vehicle’s lateral dynamics is introduced. Therefore, an analytic single track model is coupled with a long-short-term-memory neural network to compensate modelling inaccuracies of the single track model. This ‘Hybrid Vehicle Model’ is parameterized with selected training batches obtained from a comple

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15

Pasquier, Philippe, Jeff Ens, Nathan Fradet, et al. "MIDI-GPT: A Controllable Generative Model for Computer-Assisted Multitrack Music Composition." Proceedings of the AAAI Conference on Artificial Intelligence 39, no. 2 (2025): 1474–82. https://doi.org/10.1609/aaai.v39i2.32138.

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We present and release MIDI-GPT, a generative system based on the Transformer architecture that is designed for computer-assisted music composition workflows. MIDI-GPT supports the infilling of musical material at the track and bar level, and can condition generation on attributes including: instrument type, musical style, note density, polyphony level, and note duration. In order to integrate these features, we employ an alternative representation for musical material, creating a time-ordered sequence of musical events for each track and concatenating several tracks into a single sequence, ra

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16

Kurup, Unmesh, Christian Lebiere, Anthony Stentz, and Martial Hebert. "Using Expectations to Drive Cognitive Behavior." Proceedings of the AAAI Conference on Artificial Intelligence 26, no. 1 (2021): 221–27. http://dx.doi.org/10.1609/aaai.v26i1.8159.

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Generating future states of the world is an essential component of high-level cognitive tasks such as planning. We explore the notion that such future-state generation is more widespread and forms an integral part of cognition. We call these generated states expectations, and propose that cognitive systems constantly generate expectations, match them to observed behavior and react when a difference exists between the two. We describe an ACT-R model that performs expectation-driven cognition on two tasks – pedestrian tracking and behavior classification. The model generates expectations of pede

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17

Zhang, Jiaming, Maik Lang, Rodney C. Ewing, Ram Devanathan, William J. Weber, and Marcel Toulemonde. "Nanoscale phase transitions under extreme conditions within an ion track." Journal of Materials Research 25, no. 7 (2010): 1344–51. http://dx.doi.org/10.1557/jmr.2010.0180.

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The dynamics of track development due to the passage of relativistic heavy ions through solids is a long-standing issue relevant to nuclear materials, age dating of minerals, space exploration, and nanoscale fabrication of novel devices. We have integrated experimental and simulation approaches to investigate nanoscale phase transitions under the extreme conditions created within single tracks of relativistic ions in Gd2O3(TiO2)x and Gd2Zr2–xTixO7. Track size and internal structure depend on energy density deposition, irradiation temperature, and material composition. Based on the inelastic th

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18

Brown, Anthony, Lei Wang, and Peter Jung. "Stochastic Simulation of Neurofilament Transport in Axons: The “Stop-and-Go” Hypothesis." Molecular Biology of the Cell 16, no. 9 (2005): 4243–55. http://dx.doi.org/10.1091/mbc.e05-02-0141.

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According to the “stop-and-go” hypothesis of slow axonal transport, cytoskeletal and cytosolic proteins are transported along axons at fast rates but the average velocity is slow because the movements are infrequent and bidirectional. To test whether this hypothesis can explain the kinetics of slow axonal transport in vivo, we have developed a stochastic model of neurofilament transport in axons. We propose that neurofilaments move in both anterograde and retrograde directions along cytoskeletal tracks, alternating between short bouts of rapid movement and short “on-track” pauses, and that the

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19

Virk, Hardev Singh. "Modgil-Virk Formulation of Single Activation Energy Model of Radiation Damage Annealing in SSNTDs: A Critical Appraisal." Solid State Phenomena 239 (August 2015): 215–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.239.215.

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Passage of heavy ions produces radiation-damage trails known as latent tracks in a variety of solid-state nuclear-track detectors (SSNTDs). These tracks are made visible in an optical microscope by a simple process known as chemical etching. It is a well-known fact that latent tracks are radiation damage trails in SSNTDs, which can be annealed by thermal heating. Modgil-Virk formulation of single-activation-energy model of radiation damage annealing was proposed as an empirical approach for explaining the thermal fading of nuclear tracks in SSNTDs. The empirical formulation of this model is ba

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20

Ma, Longxiang, and Weining Liu. "A numerical train–floating slab track coupling model based on the periodic-Fourier-modal method." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232, no. 1 (2016): 315–34. http://dx.doi.org/10.1177/0954409716668552.

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A numerical model based on the periodic-Fourier-modal method is proposed for the dynamic analysis of a train-floating slab track coupling system with random track irregularity. In the model, each vehicle of the train is modeled as a multiple-degree-of-freedom vibration system consisting of one car body, two bogies, four wheelsets, and two groups of spring-damper suspension devices. The floating slab track is modeled as a periodic-infinite structure with discrete supports and discontinuous slabs. Linear springs are used to couple the train and the track. In order to establish this numerical mod

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21

Abdussalam, Ali Ahmed, Abdulsalam Alhaaj Neeloufir, and Emheisen Mustafa. "Yaw stability regulation of electric vehicles based on model predictive control." World Journal of Advanced Research and Reviews 19, no. 1 (2023): 1490–98. https://doi.org/10.5281/zenodo.10335760.

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The yaw stability control system contributes significantly to the vehicle's lateral dynamics in order to enhance the vehicle's handling and stability. Controlling the lateral stability of a vehicle requires maintaining the proper yaw rate and side slip angle. For this purpose, a Model Predictive Control-based electric vehicle is built along with a stability control system. With a 2DOF vehicle model and a single track, the desired yaw rate is obtained. The controller is created using the Model Predictive Control (MPC) method. This controller modifies the steering angles of the front wheels and

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22

Ma, Hong Wei, and Chuan Wei Wang. "Studying and Simulation Analysis for Rubber Track of Rescue Robot." Applied Mechanics and Materials 457-458 (October 2013): 643–48. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.643.

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Rubber track of Rescue Robot was dispersed into limited number of track blocks by the method of finite segment method used in flexible multibody dynamics. The two neighbor track blocks were connected by springs and dampers, then the moldel was become a multi-rigid-body system with flexible joint. Rubber track was modeled with the help of macro command used in the secondary development of virtual prototype technique software named ADAMS. Flexible connection was realized by the method of adding Bushing, and then a new method was proposed to build rubber track model. The obstacle-surmounting simu

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23

Liu, Quanmin, Kui Gao, Yifei Miao, Lizhong Song, and Si Yue. "Investigation of the Noise Emitted from Elevated Urban Rail Transit Paved with Various Resilient Tracks." Materials 18, no. 5 (2025): 968. https://doi.org/10.3390/ma18050968.

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Based on the dynamic receptance method, a vehicle–track–bridge interaction model was developed to calculate the wheel–rail interaction forces and the forces transmitted to the bridge in an elevated urban rail transit system. A prediction model integrating the finite element method–boundary element method (FEM-BEM) and the statistical energy analysis (SEA) method was established to obtain the noise from the main girder, track slab, and wheel–rail system for elevated urban rail transit. The calculated results agree well with the measured data. Thereafter, the noise radiation characteristics of a

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24

Maghfiroh, Hari, Oyas Wahyunggoro, Adha Imam Cahyadi, Kuo Lung Lian, and Bwo Ren Ke. "Speed Control of a Single Taipei Mass Rapid Transit System Train by Using a Single Input Fuzzy Logic Controller." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 2 (2016): 621. http://dx.doi.org/10.11591/ijece.v6i2.8123.

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The purpose of this study was to design a speed controller for mass rapid transit (MRT) train by using a single input fuzzy logic controller (SIFLC). A complete train model, which was designed according to the design of a Taipei MRT train was used for analyzing both mechanical and electrical parts. The SIFLC was used for improving a fuzzy logic controller (FLC) by reducing its number of control rules. The results indicated that the SIFLC exhibited more favorable performance than the FLC did and a substantial reduction in the number of fuzzy rules and processing time. Therefore, tuning the SIFL

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Maghfiroh, Hari, Oyas Wahyunggoro, Adha Imam Cahyadi, Kuo Lung Lian, and Bwo Ren Ke. "Speed Control of a Single Taipei Mass Rapid Transit System Train by Using a Single Input Fuzzy Logic Controller." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 2 (2016): 621. http://dx.doi.org/10.11591/ijece.v6i2.pp621-629.

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The purpose of this study was to design a speed controller for mass rapid transit (MRT) train by using a single input fuzzy logic controller (SIFLC). A complete train model, which was designed according to the design of a Taipei MRT train was used for analyzing both mechanical and electrical parts. The SIFLC was used for improving a fuzzy logic controller (FLC) by reducing its number of control rules. The results indicated that the SIFLC exhibited more favorable performance than the FLC did and a substantial reduction in the number of fuzzy rules and processing time. Therefore, tuning the SIFL

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26

Cao, Longchao, Wenxing Hu, Taotao Zhou, Lianqing Yu, and Xufeng Huang. "Monitoring of Single-Track Melting States Based on Photodiode Signal during Laser Powder Bed Fusion." Sensors 23, no. 24 (2023): 9793. http://dx.doi.org/10.3390/s23249793.

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Single track is the basis for the melt pool modeling and physics work in laser powder bed fusion (LPBF). The melting state of a single track is closely related to defects such as porosity, lack of fusion, and balling, which have a significant impact on the mechanical properties of an LPBF-created part. To ensure the reliability of part quality and repeatability, process monitoring and feedback control are emerging to improve the melting states, which is becoming a hot topic in both the industrial and academic communities. In this research, a simple and low-cost off-axial photodiode signal moni

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27

Umanov, M. I., V. V. Tsyganenko, A. G. Reydemeyster, and N. V. Khalipova. "The problem of the way modeling in the study of the interaction of the way and rolling stock." Science and Transport Progress, no. 30 (December 25, 2009): 239–42. http://dx.doi.org/10.15802/stp2009/14637.

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The two-mass model of railway track interacting with rolling stock is elaborated. The results obtained with this model correspond with results obtained with the previously elaborated single-mass model of track and with results of field tests carried out by DIIT.

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28

Peng, L., S. T. Wang, S. L. Shieh, M. D. Cheng, and T. C. Yeh. "Surface Track Discontinuity of Tropical Cyclones Crossing Taiwan: A Statistical Study." Monthly Weather Review 140, no. 1 (2012): 121–39. http://dx.doi.org/10.1175/mwr-d-10-05050.1.

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Abstract Surface tracks of some cross-Taiwan tropical cyclones were discontinuous as a result of the blockage of the north-northeast–south-southwest-oriented Central Mountain Range (CMR). This paper tries to identify the variables that may be used to diagnose track continuity in advance. The track records of 131 westbound cross-Taiwan tropical cyclones between 1897 and 2009 are examined. It is found that the track continuity of a westbound cross-Taiwan tropical cyclone depends mostly upon the landfall location (YLF), the approaching direction (ANG), and the maximum wind (VMX) of the cyclone. A

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29

Zhao, Peng, Baoming Han, Dewei Li, and Yawei Li. "Model and algorithm for the first-level maintenance operation optimization of EMU trains." Journal of Intelligent & Fuzzy Systems 41, no. 1 (2021): 2145–60. http://dx.doi.org/10.3233/jifs-210823.

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As a key operation for the daily maintenance of electric multiple units (EMU), the first-level maintenance operation directly affects the utilization efficiency of the EMU. The fixed operation sequence of EMU trains, the limitation of the track capacity and inconsistent arrival time of EMU trains give rise to such problems as extended waiting time, idle tracks and waste of maintenance capacity. To solve these problems and optimize the assignment of EMU-to-track, we propose a flexible job-shop sequence scheduling (Flexible-JSS) mode for the first-level maintenance of EMU trains, and a flexible

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30

Abdussalam Ali Ahmed, Faraj Ahmed Elzarook Barood, and Munir S. Khalifa. "Vehicle yaw rate simulation and control based on single-track model." World Journal of Advanced Research and Reviews 10, no. 1 (2021): 019–29. http://dx.doi.org/10.30574/wjarr.2021.10.1.0127.

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When designing a vehicle, the most important variable that should be taken into account is the vehicle yaw rate, it represents an important indication of the vehicle’s stability and control. This paper aims to demonstrate how to simulate and control the yaw rate of a vehicle using two control methods, the first is the Linear Quadratic control method (LQR) and the other one is neural network control. The classical single-track model is prominently used for yaw stability control analysis. One driving conditions performed is the steering input; the steering input in this work is set as step steer

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31

Nilsson, Jonas, Jonas Fredriksson, and Anders C. E. Odblom. "Reliable Vehicle Pose Estimation Using Vision and a Single-Track Model." IEEE Transactions on Intelligent Transportation Systems 15, no. 6 (2014): 2630–43. http://dx.doi.org/10.1109/tits.2014.2322196.

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32

Zhang, Yong Quan, Gui Ying Lu, and Xiao Ming Wu. "A Simplified Model of Inertial Navigation System for Underground Pipeline Track Instrument." Advanced Materials Research 542-543 (June 2012): 895–900. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.895.

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Based on the analysis of the basic principle of traditional inertial navigation technology, this paper puts forward a kind of simplified model of the track measurement which applies to underground pipeline. The model using structures of half-strap-down stable platform that composes of a single axis gyro, two accelerometers and pulse taximeter, by measuring angular velocity of pipeline azimuth, pitching angle, platform rolling angle and pipeline length, combined with self-actuated research space track, work out the mathematics model, eventually work out the space track of the underground pipeli

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33

Quan, Guozheng, Haitao Wang, Wenjing Ran, and Fanxin Meng. "Influence of Process Parameters on Flatness During Single-Track Laser Cladding." Materials 17, no. 21 (2024): 5225. http://dx.doi.org/10.3390/ma17215225.

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During the laser cladding process, poor flatness of the cladding track can cause the surface structure to be uneven or corrugated, affecting the geometrical accuracy of the workpiece. Adjusting process parameters is an effective way to achieve high cladding track flatness. This study established a mesoscale model of the laser cladding process for CoCrMoSi powder to simulate the formation of a single cladding track. Subsequently, the formation mechanism of cladding track flatness was revealed by analyzing the flow within the molten pool and the solidification behavior of the molten pool edge. T

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34

Wang, Zhimin, Min Li, Diru Wu, et al. "Imaging of muon track in CsI(Tl) crystal with single photon sensitive camera." Journal of Instrumentation 18, no. 09 (2023): P09015. http://dx.doi.org/10.1088/1748-0221/18/09/p09015.

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Abstract This work presents a novel approach to visual photon imaging using a single-photon-sensitive camera and PMTs. The aim of this study is to measure and identify muon tracks from 2D images captured by CsI(Tl) crystal scintillator detectors. The proposed approach allows for direct observation of muon tracks with a reasonable signal-to-noise ratio, eliminating the need for additional amplification or external light sources. With further enhancements to the analysis and setup, this algorithm offers an innovative method for particle measurement in low-photon environments and enables precise

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35

Bose, Tulika, Eyal Levenberg, and Varvara Zania. "Analyzing track responses to train braking." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232, no. 7 (2018): 1984–93. http://dx.doi.org/10.1177/0954409718761242.

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The objective of this study was to suggest a response analysis framework for railway tracks that are subjected to braking. An analytical formulation was developed, in which the rail–track system was modeled as an infinite beam supported by an orthogonal Winkler foundation consisting of linear springs in perpendicular directions. The spring constants were varied over a wide range in order to represent different track types. Braking loads were simulated as representative sets of vertical and longitudinal forces, either concentrated or distributed. Considering a realistic set of model parameters,

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36

Xiao, Yuanjie, Zhenxing Chang, Jianfeng Mao, et al. "Evaluating the Effect of Rail Fastener Failure on Dynamic Responses of Train-Ballasted Track-Subgrade Coupling System for Smart Track Condition Assessment." Materials 15, no. 7 (2022): 2675. http://dx.doi.org/10.3390/ma15072675.

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Rail fasteners are among the key components of ballasted track of high-speed railway due to their functionality of fixing rails to sleepers. The failure of rail fastening system hinders the transmission of train loads to underlying track substructure and therefore endangers the operation safety and longevity of ballasted track. This paper first established a three-dimensional (3D) numerical model of the train-ballasted track-subgrade coupling system by integrating multibody dynamics (MBD) and finite element method (FEM). Numerical simulations were then performed to investigate the effects of d

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37

Xu, Qing Yuan, and Bin Li. "Study on Spatial Mechanical Characteristic of High-Speed Railway Ballastless Slab Track on Subgrade." Advanced Materials Research 503-504 (April 2012): 1010–15. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.1010.

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By using beam element to model rail, spring element to model fastener, solid element to model different components of ballastless track, contact element to model the connection between each component of ballastless track, a statics three-dimensional nonlinear finite element mechanical model for calculating the forces transmission among rail, fastening and different component of ballastless slab track on subgrade was established. Experimental data of Suining-Chongqing railway line was given to validate the calculation model. Force of ballastless slab track on subgrade under gravity load, train

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38

Xue-Ning, Ma, Hao Zi-Xiang, Liu Chang, Wang Xu, and Wang Bo-Lin. "Study of Problems Related to Laying Ballastless Track in the Turnout of Ballasted Track at High-Speed Railway Stations." Advances in Materials Science and Engineering 2022 (May 28, 2022): 1–16. http://dx.doi.org/10.1155/2022/8446392.

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Due to the complex dynamic interactions of the vehicle-track system in the turnout of high-speed railway stations on a ballasted track, the geometric position of the line changes rapidly. In order to improve the stability of the line, the ballasted track in the turnout area of the stations can be replaced by a ballastless track. Based on the engineering background of laying ballastless track in the turnout area of Zhonglan’s high-speed railway station, this paper studies the subgrade reinforcement scheme, subgrade settlement prediction, and ballasted-ballastless track transition section settin

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Ding, Jiatao, Jiangchen Zhou, Zhao Guo, and Xiaohui Xiao. "Energy-Efficient Bipedal Walking: From Single-Mass Model to Three-Mass Model." Robotica 39, no. 9 (2021): 1537–59. http://dx.doi.org/10.1017/s0263574720001320.

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SUMMARYThe work aims to realize energy-efficient bipedal walking by employing the three-mass inverted pendulum model (3MIPM) and compare its energy performance with linear inverted pendulum model (LIPM). To do this, a general optimal index on center of mass (CoM) acceleration is first derived for energetic cost evaluation. After defining the equivalent zero moment point (ZMP) motion, an unconstrained optimization approach for CoM generation is extended for 3MIPM, which can track different ZMP references and address the height variation as well. To make use of the allowable ZMP movement, a cons

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Fang, Cheng, Wei Zhou, Xinguo Liu, Hongxiang Ren, and Jianjun Wu. "Towards an uncertainty evaluation model for marine track considering local sampling cloud and sample information." PLOS ONE 17, no. 6 (2022): e0269184. http://dx.doi.org/10.1371/journal.pone.0269184.

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To evaluate the practical ability of crews during the navigation of an inward-port single ship, a track evaluation model was developed on a planar forward normal cloud chart under sample information based on the forward normal and the backward normal cloud generator. Since the track sampling cloud may be too divergent, a track belt division method based on the contributions of normal cloud drops was proposed. Combining the track evaluation model with the track belt division method, a comprehensive track evaluation scheme of the local sampling cloud based on sampling information was established

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Mikhaylov, S. V. "Service life evaluation of ballastless track construction." Vestnik of the Railway Research Institute 78, no. 3 (2019): 183–87. http://dx.doi.org/10.21780/2223-9731-2019-78-3-183-187.

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The article presents method for calculating service life of ballastless track structure using the track oscillation model as a structure containing three infinitely long beams, the lower of which lies on the modified Winkler base, and the upper and middle are based on elastic layers, mainly having the characteristics of Winkler. The use of this model is due to the need to carry out calculation for bearing concrete slab, the destruction of which is the main reason for the failure of the ballastless track structure. First part of the article presents model for calculating service life of a balla

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Niu, Ze Lin. "Optimization Design of Single Track Railway Tunnel Lining Structure." Applied Mechanics and Materials 638-640 (September 2014): 813–16. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.813.

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Based on the traditional safety coefficient method,Continuum Model and single track railway tunnel lining structure, the paper does numerical simulation calculates and compares effects of actions on tunnel lining structure, analyses and get the effect of actions in different section of tunnel lining.According to the tunnel lining element’s safety coefficient and standard requirements, reasonable lining structure thickness is gave by comparison and optimization of lining structure thickness,and this provides the theory support for the structure design of track railway tunnel .

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Chen, Dongju, Peng Wang, Kun Sun, Yuhang Tang, Shuai Kong, and Jinwei Fan. "Simulation and prediction of the temperature field of copper alloys fabricated by selective laser melting." Journal of Laser Applications 34, no. 4 (2022): 042001. http://dx.doi.org/10.2351/7.0000718.

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In the selective laser melting (SLM) process, the experimental approach to determine the optimal process parameters is labor-intensive, material-intensive, and time-consuming. The use of simulation methods also requires more time support and higher hardware requirements. In this paper, a three-dimensional transient heat transfer model and a neural network optimization process parameter model in the process of preparing copper alloys by SLM are developed by combining finite element simulation methods with neural network prediction. The thermal behavior of the multitrack molten pools was investi

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Xiao, Song, Xian Si Tan, and Hong Wang. "Interacting Multiple Mode Tracking Algorithm Based on Modified Coordinate Turn Model." Applied Mechanics and Materials 610 (August 2014): 534–39. http://dx.doi.org/10.4028/www.scientific.net/amm.610.534.

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The continuing success of near space hypersonic aircraft flight test has become a real threat to China's space attack-defense system, In view of the problem that the single model cannot track such target effectively, an interacting multiple model (IMM) tracking algorithm based on modified cornering model (MCT) was proposed. First the characteristics of near space hypersonic target were analyzed, and then the target real-time angular velocity according to the target motion equation was estimated, finally the near space hypersonic target tracking through the IMM was carried out. The Monte Carlo

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Hermann, Florian, Andreas Michalowski, Tim Brünnette, Peter Reimann, Sabrina Vogt, and Thomas Graf. "Data-Driven Prediction and Uncertainty Quantification of Process Parameters for Directed Energy Deposition." Materials 16, no. 23 (2023): 7308. http://dx.doi.org/10.3390/ma16237308.

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Laser-based directed energy deposition using metal powder (DED-LB/M) offers great potential for a flexible production mainly defined by software. To exploit this potential, knowledge of the process parameters required to achieve a specific track geometry is essential. Existing analytical, numerical, and machine-learning approaches, however, are not yet able to predict the process parameters in a satisfactory way. A trial-&-error approach is therefore usually applied to find the best process parameters. This paper presents a novel user-centric decision-making workflow, in which several comb

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Zhang, Wei, and Shu Qin Shi. "Simulation of Temperature Field of Metal Thin Wall Parts during Laser Direct Deposition Rapid Prototyping." Applied Mechanics and Materials 88-89 (August 2011): 42–45. http://dx.doi.org/10.4028/www.scientific.net/amm.88-89.42.

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The simulation of temperature field during laser direct metal deposition(DMD) were researched. The finite element model of single track cladding, multi-track overlapping and multi-layer deposition were established. The temperature field was simulated by ANSYS software basing on life-and-death element and cycle algorithm. Under different process parameters, the temperature and temperature gradient on the cross-section of sample were simulated during single- track scanning, multi-track overlapping and multi-layer deposition. Temperature cycle curves at different position were analyzed and were c

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Xu, Zhao Mei, Zong Hai Hong, Qing An Wang, and Hai Bing Wu. "Numerical Simulation Investigation on Single-Layer Multi-Tracks Laser Milling of A_l2O₃ Ceramic." Advanced Materials Research 971-973 (June 2014): 111–14. http://dx.doi.org/10.4028/www.scientific.net/amr.971-973.111.

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Regional-input high-power laser beam inevitably leads to inhomogeneous and instable temperature distribution of laser milling(LM) process. Knowledge of thermal of multi-track LM is critical to understand the interaction of different milling tracks. Taking into account temperature-dependent thermal conduction and heat capacity, a three-dimensional transient thermal finite element model has been developed. The moving laser beam is simulated with the employment of ANSYS parametric design language and latent heat is considered by using enthalpy. Several conclusions according to the simulation resu

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Lundquist, Christian, and Thomas B. Schön. "Recursive Identification of Cornering Stiffness Parameters for an Enhanced Single Track Model." IFAC Proceedings Volumes 42, no. 10 (2009): 1726–31. http://dx.doi.org/10.3182/20090706-3-fr-2004.00287.

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Song Menghua, 宋梦华, 林鑫 Lin Xin, 杨海欧 Yang Hai′ou, and 黄卫东 Huang Weidong. "A Model of Constructing the End of Single-Track Laser Cladding Layer." Laser & Optoelectronics Progress 52, no. 8 (2015): 081408. http://dx.doi.org/10.3788/lop52.081408.

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Meng, Xuelei. "Train Rescheduling on Single-track Railway Model Based on Fuzzy Comprehensive Optimization." Journal of Information and Computational Science 11, no. 5 (2014): 1597–603. http://dx.doi.org/10.12733/jics20103146.

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