Статті в журналах: "Mobility of tracked vehicles"

1

Dong, Chao, Kai Cheng, Kangle Hu, and WenQiang Hu. "Dynamic modeling study on the slope steering performance of articulated tracked vehicles." Advances in Mechanical Engineering 9, no. 7 (July 2017): 168781401771241. http://dx.doi.org/10.1177/1687814017712418.

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Articulated tracked vehicles are used as special off-road transportation vehicles, and their mobility is gaining more attention now than before. As an important evaluation indicator of the mobility of articulated tracked vehicles, steering performance receives wide attention in particular. Most of the present studies focus on the planar steering performance; few studies employing current models concentrate on the slope steering performance of articulated tracked vehicles. To address this research gap, this study proposes a dynamic modeling method for analyzing the slope steering performance of articulated tracked vehicles. A kinematic model of a vehicle is initially constructed to analyze its kinematic characteristics during slope steering; these characteristics include velocity and acceleration. A dynamic model of a vehicle is then developed to analyze its mechanical characteristics during slope steering; these characteristics include vertical loads, driving forces, and driving moments of tracks. The created dynamic model is then applied to analyze the slope steering performance of a specific articulated tracked vehicle. A mechanical-control united simulation model and an actual test of an articulated tracked vehicle are suggested to verify the established steering model. Comparison results show the effectiveness of the proposed dynamic steering model.

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2

Wong, Jo Y., Paramsothy Jayakumar, and Jon Preston-Thomas. "Evaluation of the computer simulation model NTVPM for assessing military tracked vehicle cross-country mobility." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 5 (April 23, 2018): 1194–213. http://dx.doi.org/10.1177/0954407018765504.

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In the United States and some other NATO (North Atlantic Treaty Organization) countries, the NATO Reference Mobility Model is currently used to evaluate military ground vehicle mobility. The module of the NATO Reference Mobility Model for predicting the cross-country performance of military vehicles is empirically based and was developed using test data collected decades ago. The NATO Reference Mobility Model has inherent limitations, such as the uncertainty whether its empirical relations can be extrapolated beyond the test conditions upon which they were derived or whether it can be used for evaluating new-generation military vehicles. This suggests that there is a need for the development of a physics-based model that takes into account the advancements in terramechanics and modelling/simulation techniques. This paper describes the results of a detailed evaluation of a physics-based model – the Nepean Tracked Vehicle Performance Model – for assessing military tracked vehicle cross-country performance. The performance of a notional tracked vehicle (an armoured personnel carrier) predicted by the latest version of the Nepean Tracked Vehicle Performance Model is compared with test data obtained on sandy terrain, muskeg and snow-covered terrain. The correlations between the predicted and measured performance are evaluated using the coefficient of correlation, coefficient of determination, root mean square deviation and coefficient of variation. The applications of the Nepean Tracked Vehicle Performance Model to predicting the maximum possible vehicle speed (speed-made-good) on a given terrain, the sensitivity of vehicle performance to variations in the values of terrain parameters and the mean maximum pressure are demonstrated. The results of this study indicate that the Nepean Tracked Vehicle Performance Model has potential to form the basis for the development of the next-generation cross-country performance assessment methodology for military tracked vehicles.

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3

Wong, J. Y. "Optimization of the Tractive Performance of Articulated Tracked Vehicles Using an Advanced Computer Simulation Model." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 206, no. 1 (January 1992): 29–45. http://dx.doi.org/10.1243/pime_proc_1992_206_158_02.

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This paper describes the results of a study of the effects of articulation joint configuration, suspension characteristics, location of the centre of gravity and initial track tension on the mobility of a two-unit, articulated tracked vehicle. The study was carried out using a comprehensive computer simulation model known as NTVPM-86. The results show that suspension characteristics, location of the centre of gravity and initial track tension have noticeable effects on the mobility of articulated tracked vehicles over marginal terrain, while the articulation joint angle has a less significant influence on vehicle performance. Locking the articulation joint between the two units of an articulated tracked vehicle usually causes a degradation of tractive performance. The approach to the optimization of the design of articulated tracked vehicles is demonstrated. It is shown that the simulation model NTVPM-86 can play a significant role in the optimization of articulated tracked vehicle design or in the evaluation of vehicle candidates for a given mission and environment.

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4

Qiao, Xin-yong, Ying Jin, and Cheng Gu. "Vibration Response and Evaluation Method of High-Speed Tracked Vehicles Driving Off-Road." Shock and Vibration 2022 (February 3, 2022): 1–18. http://dx.doi.org/10.1155/2022/2866236.

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In the stage of vehicle demonstration and development, equipment finalization test, and equipment service, an important role is played by the mobility prediction and evaluation method of tracked vehicles under complex road conditions, in which vehicle vibration response evaluation is the main content of off-road mobility prediction and evaluation. In this paper, based on the principle of multibody dynamics, a high-speed tracked vehicle action system model was established by using the simulation analysis method. The vibration response of the vehicle on uneven pavement was evaluated from four aspects: driver comfort, driver absorbed power, occupant handling efficiency, and suspension dynamic travel. Simultaneously, the shock vibration peak value was utilized to evaluate the vibration response of the vehicle during obstacle crossing. Three fitting methods, namely polynomial response surface, Kriging method, and radial basis function neural network, were used to establish approximate models between the design variables and the objective function, respectively. The pros and cons of each approximate model were analyzed by comparing the approximate errors between the predicted values of the fitting model and the actual response values of the simulation model. The results of this paper are of reference significance for the prediction and evaluation of the off-road mobility of high-speed tracked vehicles.

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5

Kovácsházy, Miklós. "The Modernization of the Armored Combat Vehicle Fleet of the Hungarian Defense Forces in Terms of Mobility." Academic and Applied Research in Military and Public Management Science 13, no. 2 (June 30, 2014): 337–46. http://dx.doi.org/10.32565/aarms.2014.2.12.

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The Hungarian Defence Forces (Magyar Honvédség) have several off–road combat vehicles of different ages and condition. One can find tracked– and wheeled equipment, such as battle tanks, armored infantry fighting vehicles, armored personnel carriers, special purpose vehicles, and engineering machinery among them. Some of these devices are now obsolete, the exchange of the rest is becoming due. This study looks at the armored combat vehicle portfolio of the Hungarian Defence Forces, seeking an answer to the question what the role of the mobility of armed forces is; are only wheeled or tracked equipment needed, or both. I am going to review, on the basis of the main sources of literature, what results have been achieved in national military–technical life, in the field of mobility, by comparison and an examination of a selection of military use off–road vehicles.

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6

Wong, J. Y., and J. Preston-Thomas. "Investigation into the Effects of Suspension Characteristics and Design Parameters on the Performance of Tracked Vehicles using an Advanced Computer Simulation Model." Proceedings of the Institution of Mechanical Engineers, Part D: Transport Engineering 202, no. 3 (July 1988): 143–61. http://dx.doi.org/10.1243/pime_proc_1988_202_169_02.

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This paper describes the results of an investigation into the effects of the characteristics of the suspension system, initial track tension, vehicle weight and location of the centre of gravity on the tractive performance of tracked vehicles over unprepared terrain. The investigation was carried out using a newly developed computer simulation model NTVPM-86. The results show that the suspension characteristics, initial track tension and vehicle weight have noticeable effects on the mobility of tracked vehicles over marginal terrain, while the location of the centre of gravity, within the normal range, has a less significant influence on the tractive performance. It is demonstrated that the simulation model NTVPM-86 can play a significant role in the optimization of tracked vehicle design or in the evaluation of vehicle candidates for a given mission and environment.

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7

Das, R. K., A. Upadhyay, and R. K. Garg. "An Unmanned Tracked Vehicle for Snow Research Applications." Defence Science Journal 67, no. 1 (December 23, 2016): 74. http://dx.doi.org/10.14429/dsj.1.8952.

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Lightweight robotic vehicles can be designed for over-snow mobility to carry out a variety of snow and glacier related studies like carrying out GPR survey of cracks & crevasses over ice crusts that cannot support foot travel, for collecting snow samples and carrying out sub-surface experiments with penetrometers on terrain that are dangerous for human, GPS mapping of avalanche debris etc. Sinkage, resistance to snow compaction, loss of traction and ingestion of snow into the driving system are some of the challenges that an unmanned lightweight tracked vehicle faces in snowbound terrain. In present work, a lightweight and unmanned remotely operated vehicle (ROV) is conceptualized and developed as a technological solution. In this paper design and features of this vehicle, named HimBot, are presented along with the results obtained from tests carried over snow at Solang Nullah field observatory of SASE in February 2013. The outcome of this work will help in developing an optimized design of an ROV for over snow mobility for a variety of applications.

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8

Kuznetsova, V. N., and R. V. Romanenko. "Basic aspects of methodology for justifying the performance characteristics of a tracked machine with electromechanical transmission." Russian Automobile and Highway Industry Journal 17, no. 5 (November 11, 2020): 574–83. http://dx.doi.org/10.26518/2071-7296-2020-17-5-574-583.

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Introduction. High rates of new territories development, the development of the construction and road-transport complex, mining and transportation of minerals is impossible without machinery and equipment. The use of a caterpillar propeller as a base chassis has both advantages and disadvantages. One of the main problems is ensuring the mobility of tracked vehicles. The use of mixed-type power units and transmissions allows solving this scientific problem and ensuring the efficiency of technological operations during the operation of tracked vehicles. Modern vehicles use a variety of transmission types, including electromechanical transmission (EMT). In such a design, torque conversion and change in the speed of the drive wheels of the caterpillar propulsion device are carried out by means of traction electric motors (TEM). The aim of the use of electromechanical transmission in tracked machines is to increase the tractive-dynamic properties and fuel economy and, as a result, to improve the mobility of the machine. The combination of an internal combustion engine (ICE) and electric machines in a caterpillar machine (CM) makes it possible to maximize the advantages of the latter and compensate for the disadvantages of each. These improvements are achieved mainly through the different performance characteristics of the traction electric engine (TEE) and the energy storage device (ESD).Research methods. A system analysis served as the basis for the theoretical studies. A mathematical model of the motion of a tracked vehicle with an electromechanical transmission has been developed. The methods of the theory of algorithms were used.Results. A structural diagram of the arrangement of a series connection of elements of an electromechanical transmission of a tracked vehicle, protected by a patent of the Russian Federation, has been developed and presented. An algorithm has been developed for the interaction of its elements taking into account the movement of the machine. The main mathematical relationships included in the methodology for substantiating the operational characteristics of a tracked vehicle with an electromechanical transmission are presented.Discussion and conclusion. Using the developed approaches and methodology, it will be possible to calculate the components of the electromechanical transmission in order to ensure the required mobility of the caterpillar machine, to assess its fuel economy, as well as its maximum and average speed.

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9

Wong, J. Y. "Development of high-mobility tracked vehicles for over snow operations." Journal of Terramechanics 46, no. 4 (August 2009): 141–55. http://dx.doi.org/10.1016/j.jterra.2008.03.002.

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10

Dubin, D. A., O. A. Nakaznoi, D. A. Chizhov, and A. Yu Shmakov. "SPECIALIZED MEASURMENT SYSTEM FOR EXPERIMENTAL RESEARCH OF SUSPENSION SYSTEM LOADING CONDITIONS OF A HIGH MOBILITY TRACKED VEHICLES." Traktory i sel hozmashiny 84, no. 4 (April 15, 2017): 16–24. http://dx.doi.org/10.17816/0321-4443-66266.

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Loading of cushioning systems, as a condition caused by external influences and operating conditions, for highspeed tracked vehicles is determined by the characteristics of the track profile and motion modes. The most reliable estimate of the operational parameters of loading of parts and suspension assemblies is obtained experimentally using specialized measuring equipment. Within the conducted investigations for determining of kinematic and force parameters of loading of the elements of the cushioning system of a 14-ton tracked vehicle while driving on forest ground roads, a measuring system has been developed that realizes estimation of the loading characteristics by the angular position of the suspensions relative to the vehicle body. The measuring system consists of the hardware and software subsystems and records angles of twisting of torsion shafts as a function of time, with subsequent conversion and statistical processing of obtained data into the loading characteristics of elastic elements and suspension arms. According to received sample data, the software subsystem calculates average durability of torsion shafts in order to determine the most loaded suspensions. The advantage of the study is in relative simplicity and versatility. The hardware subsystem and rigging of the sensor equipment attachment do not require making changes in the construction of the undercarriage and allows to carry out investigations on most types of tracked vehicles. The software subsystem can be adapted for studies of loading of tracked machines of different weight categories. Reliability of the test equipment, as well as stability of formation and recording of measuring signals, was evaluated in polygon tests during motion of a tracked vehicle in difficult road conditions along 350 km tracks.

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11

Evseev, Kirill, Boris Kositsyn, George Kotiev, Anton Stadukhin, and Igor Smirnov. "Development of the conceptual design of vehicles for off-road container transportation for mining applications." E3S Web of Conferences 326 (2021): 00025. http://dx.doi.org/10.1051/e3sconf/202132600025.

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The article substantiates the relevance of off-road container transportation by ground railless transport vehicles and weight-size parameters of the transported cargo for the mining operations. A hierarchy of complex mobility properties is developed to investigate the significance of performance properties, which is divided into levels of properties. Taking into account the hierarchy of properties, the measuring instruments are determined, the indicators of which can be used to determine the priority technical solution for container and rock transportation vehicles. The article provides a classification of tracked vehicles and tracked trains with the analysis of their design and layout variants. As a result, variants of the concepts of vehicles for off-road container and rock transportation have been formed. Based on the analysis of the hierarchy of performance properties, design and layout variants of modern tracked vehicles and considering the selected objects of research, the conceptual design of a semi-trailer tracked train and a tracked train with a double-hinge fifth wheel coupling has been proposed.

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12

Haji, Takafumi, Tetsuya Kinugasa, Shinichi Araki, Daiki Hanada, Koji Yoshida, Hisanori Amano, Ryota Hayashi, Kenichi Tokuda, and Masatsugu Iribe. "New Body Design for Flexible Mono-Tread Mobile Track: Layered Structure and Passive Retro-Flexion." Journal of Robotics and Mechatronics 26, no. 4 (August 20, 2014): 460–68. http://dx.doi.org/10.20965/jrm.2014.p0460.

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<div class=""abs_img""><img src=""[disp_template_path]/JRM/abst-image/00260004/08.jpg"" width=""300"" />Flexible mono-tread mobile track RT06</div> Robot technology is expected to be applicable to missions on rough terrain, such as rescue activities, environmental investigation, and planetary exploration. Tracked vehicles are effective in such environments because the contact pressure of the vehicle can be distributed more widely. To improve mobility, new mechanisms such as serpentine tracked vehicles have been proposed. We previously proposed the flexible mono-tread mobile track (FMT). The first prototype, WORMY, had a mechanical problem when it moves flexing, i.e., track belt interference and derailing. This paper proposes and confirms a new FMT design strategy using a layered structure to reduce space between vertebrae, solving derailing. A new prototype using the layered structure confirmed its mobility. We also used the prototype to evaluate the effectiveness of passive retro-flexion against obstacles.

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13

Dhir, A., and S. Sankar. "Dynamics of off-Road Tracked Vehicles Equipped with Trailing Arm Suspension." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 209, no. 3 (July 1995): 195–215. http://dx.doi.org/10.1243/pime_proc_1995_209_204_02.

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A two-dimensional computer simulation model is developed for dynamic analysis of high-mobility tracked vehicles fitted with a trailing arm suspension system. The simulation model is oriented as a design tool for detailed analysis of vehicle suspension dynamics and ride quality assessment. The Lagrangian model formulation of a tracked vehicle is derived by considering a rigid terrain of an arbitrary profile and constant forward vehicle speed. The model incorporates detailed representations of a vehicle suspension system and dynamic wheel-track-terrain interactions. The wheel forces are evaluated based on an adaptive footprint formulation of a wheel/track-terrain contact patch, and the track forces are modelled based on kinematic considerations. The computer model predictions are validated against field measurements, which were gathered from an extensive field testing of an in-service armoured personnel carrier. The comparison between measured and simulated dynamic responses exhibits a fairly close correlation.

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14

Yao, Yu, Kai Cheng, Bangcheng Zhang, Jinhua Lin, Dawei Jiang, and Zhi Gao. "A steering model for articulated tracked vehicle considering soil deformation on track–soil interaction." Advances in Mechanical Engineering 10, no. 10 (October 2018): 168781401880270. http://dx.doi.org/10.1177/1687814018802704.

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With the advantage of steering performance, articulated tracked vehicles have excellent mobility in off-road application. However, in current models for steering performance, soil deformation on the interaction between track and soil cannot always be taken into account. Therefore, steering performance cannot always be calculated accurately. In order to solve the problem, it is essential to propose a steering model which can take the effect of soil deformation on track–soil interaction into consideration. In this article, a steering model of articulated tracked vehicle is proposed on track–soil interaction. Moreover, in order to improve steering performance, a track–soil sub-model is developed that can consider soil deformation on track–soil interaction. Using this steering model based on track–soil sub-model, steering performance can be calculated more accurately. Simulation studies and experimental results are in strong agreement with the theoretical results in this article. The results show that equipped with the track–soil sub-model, the proposed steering model can be used to accurately predict steering performance. The steering model of articulated tracked vehicle proposed in this article can provide a basis for other similar vehicles.

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15

Taratorkin, I. A., M. V. Vyaznikov, and A. M. Vyaznikov. "Increasing Mobility of Tracked Vehicles during Curvilinear Motion by Redistributing Power Flows." MATEC Web of Conferences 346 (2021): 03099. http://dx.doi.org/10.1051/matecconf/202134603099.

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A kinematic diagram of an electromechanical transmission of a high-speed tracked vehicle with two traction electric motors, on-board gearboxes and a ZK-type differential turning mechanism, which makes it possible to effectively distribute power flows between the sides during curvilinear motion, is proposed.

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16

Lu, Hao, Guangming Xiong, and Konghui Guo. "Motion Predicting of Autonomous Tracked Vehicles with Online Slip Model Identification." Mathematical Problems in Engineering 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/6375652.

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Precise understanding of the mobility is essential for high performance autonomous tracked vehicles in challenging circumstances, though the complex track/terrain interaction is difficult to model. A slip model based on the instantaneous centers of rotation (ICRs) of treads is presented and identified to predict the motion of the vehicle in a short term. Unlike many research studies estimating current ICRs locations using velocity measurements for feedback controllers, we focus on predicting the forward trajectories by estimating ICRs locations using position measurements. ICRs locations are parameterized over both tracks rolling speeds and the kinematic parameters are estimated in real time using an extended Kalman filter (EKF) without requiring prior knowledge of terrain parameters. Simulation results verify that the proposed algorithm performs better than the traditional method when the pose measuring frequencies are low. Experiments are conducted on a tracked vehicle with a weight of 13.6 tons. Results demonstrate that the predicted position and heading errors are reduced by about 75% and the reduction of pose errors is over 24% in the absence of the real-time kinematic global positioning system (RTK GPS).

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17

Wong, J. Y., and Wei Huang. "Approaches to improving the mobility of military tracked vehicles on soft terrain." International Journal of Heavy Vehicle Systems 15, no. 2/3/4 (2008): 127. http://dx.doi.org/10.1504/ijhvs.2008.022239.

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18

Vyaznikov, M. V., and A. M. Vyaznikov. "Increasing the mobility of tracked vehicles during curvilineer motion with partial skidding." IOP Conference Series: Materials Science and Engineering 971 (December 1, 2020): 052080. http://dx.doi.org/10.1088/1757-899x/971/5/052080.

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19

Ryu, H. S., D. S. Bae, J. H. Choi, and A. A. Shabana. "A compliant track link model for high-speed, high-mobility tracked vehicles." International Journal for Numerical Methods in Engineering 48, no. 10 (2000): 1481–502. http://dx.doi.org/10.1002/1097-0207(20000810)48:10<1481::aid-nme959>3.0.co;2-p.

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20

Dobretsov, R. Yu, I. V. Grigorev, and V. A. Ivanov. "Mobility increase in all-terrain tracked vehicles for logging camp-type operations." Systems. Methods. Technologies, no. 2(30) (2016): 114–19. http://dx.doi.org/10.18324/2077-5415-2016-2-114-119.

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21

Lee, Kisu. "A numerical method for dynamic analysis of tracked vehicles of high mobility." KSME International Journal 14, no. 10 (October 2000): 1028–40. http://dx.doi.org/10.1007/bf03185057.

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22

Tota, Antonio, Enrico Galvagno, and Mauro Velardocchia. "Analytical Study on the Cornering Behavior of an Articulated Tracked Vehicle." Machines 9, no. 2 (February 9, 2021): 38. http://dx.doi.org/10.3390/machines9020038.

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Articulated tracked vehicles have been traditionally studied and appreciated for the extreme maneuverability and mobility flexibility in terms of grade and side slope capabilities. The articulation joint represents an attractive and advantageous solution, if compared to the traditional skid steering operation, by avoiding any trust adjustment between the outside and inside tracks. This paper focuses on the analysis and control of an articulated tracked vehicle characterized by two units connected through a mechanical multiaxial joint that is hydraulically actuated to allow the articulated steering operation. A realistic eight degrees of freedom mathematical model is introduced to include the main nonlinearities involved in the articulated steering behavior. A linearized vehicle model is further proposed to analytically characterize the cornering steady-state and transient behaviors for small lateral accelerations. Finally, a hitch angle controller is designed by proposing a torque-based and a speed-based Proportional Integral Derivative (PID) logics. The controller is also verified by simulating maneuvers typically adopted for handling analysis.

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23

Wakabayashi, Sachiko, Hitoshi Sato, and Shin-Ichiro Nishida. "Design and mobility evaluation of tracked lunar vehicle." Journal of Terramechanics 46, no. 3 (June 2009): 105–14. http://dx.doi.org/10.1016/j.jterra.2008.09.002.

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24

Negrut, Dan, Daniel Melanz, Hammad Mazhar, David Lamb, Paramsothy Jayakumar, and Michael Letherwood. "Investigating Through Simulation the Mobility of Light Tracked Vehicles Operating on Discrete Granular Terrain." SAE International Journal of Passenger Cars - Mechanical Systems 6, no. 1 (April 8, 2013): 369–81. http://dx.doi.org/10.4271/2013-01-1191.

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25

Mahalingam, Ilango, and Chandramouli Padmanabhan. "Planar Multi-body Dynamics of a Tracked Vehicle using Imaginary Wheel Model for Tracks." Defence Science Journal 67, no. 4 (June 30, 2017): 460. http://dx.doi.org/10.14429/dsj.67.11548.

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Off-road vehicles achieve their mobility with the help of a track system. A track has large number of rigid bodies with pin joints leading to computational complexity in modelling the dynamic behaviour of the system. In this paper, a new idea is proposed, where the tracks are replaced by a set of imaginary wheels connected to the road wheels using mechanical links. A non-linear wheel terrain interaction model considering longitudinal slip is used to find out the normal and tangential contact forces. A linear trailing arm suspension, where a road arm connecting the road wheel and chassis with a rotational spring and damper system is considered. The differential algebraic equations (DAEs) from the multi-body model are derived in Cartesian coordinates and formulated using augmented formulation. The augmented equations are solved numerically using appropriate stabilisation techniques. The novel proposition is validated using experimental measurements done on a tracked vehicle.

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Viswanath, Hari, A. Kumaraswamy, and P. Sivakumar. "Optimisation of Diesel Engine for Hybrid Military Tracked Vehicles using Matlab-Simulink." Defence Science Journal 67, no. 4 (June 30, 2017): 360. http://dx.doi.org/10.14429/dsj.67.11490.

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The demand in the technology requirements for diesel engines is growing keeping hybrid vehicles in mind. In future the diesel engine no longer drives the wheels directly; as a result the engine can be engaged at a limited number of operating points, thus, offering an opportunity to optimise the fuel efficiency and performance at those operating points. The extent to which this optimisation is possible is limited by practical considerations. Also if the positive and negative power peaks in vehicle during mobility (e.g. acceleration and regenerative braking respectively) can be accommodated by high-power batteries, then the size of the engine can be considerably reduced. The engine’s operating points depend on the power-control strategy. The consequences of modifications to these operating points will have an effect on performance and efficiency. As in series hybrid only a limited number of operating points are involved and dynamic performance requirements are not imposed on the diesel engine, significant improvements can be achieved by the optimisation of the diesel engine at these operating points. The feasibility of optimisation of the engine at these operating points can be done by modification on the injection systems, the valve timings and other such parameters. This kind of approach requires the use of complex and repeated experimental analysis of the engine which is costly, cumbersome and time consuming. An alternative to this kind of experimental approach is to develop a simulation model of the engine with the generator in Matlab- Simulink.

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27

Lee, Byung-Hoon, and Byung-Yil Souh. "Dynamic Modeling and Analysis of a High Mobility Tracked Vehicle." Transactions of the Korean Society of Mechanical Engineers A 30, no. 11 (November 1, 2006): 1486–93. http://dx.doi.org/10.3795/ksme-a.2006.30.11.1486.

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28

Hetherington, J. G. "The applicability of the MMP concept in specifying off-road mobility for wheeled and tracked vehicles." Journal of Terramechanics 38, no. 2 (April 2001): 63–70. http://dx.doi.org/10.1016/s0022-4898(00)00010-0.

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29

Sheng, Long Bo, Ji Sheng Ma, He Yang Sun, Shou Qiang Guan, and Wei Zhao. "ADAMS-Based Braking System of a Tracked Vehicle to Optimize Mechanical Linkage Design." Applied Mechanics and Materials 117-119 (October 2011): 1457–60. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.1457.

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A certain new type of tracked vehicle has exposed the problem of insufficient braking force. Especially when tracked vehicle climbing the ramp, insufficient braking force is very harmful .The brake problem to a large extent affect the driving and mobility performance of the tracked vehicle .In this paper, using Pro/Engineer software to create braking system of a tracked vehicle mechanical linkage virtual prototype. And through the mech/pro interfaces the virtual prototype into ADAMS and is put up for dynamic analysis. On the basis of the kinematic analysis of the mechanical linkage, the link length of mechanical linkage was optimized to improve the braking force and obtain better optimization results.

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30

Рesterev, Mykhailo. "Mathematical Model of the Movement of a Fighting Tracked Vehicle." Przegląd Nauk o Obronności, no. 11 (October 11, 2021): 13–25. http://dx.doi.org/10.37055/pno/140217.

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ObjectivesDevelopment of movement model of fighting tracked vehicle to study oscillatory processes that cause a dynamic load on the driver’s workplace and imitate real conditions of fighting tracked vehicle’s movement to develop technical requirements for dynamic simulators with the achievement of high degree of their compliance with the real vehicle. Research hypothesis. Use of the improved mobility platform of dynamic simulators, realizing the conditions as close as possible to conditions of driving a real fighting tracked vehicle.MethodsThe presented views are the result of empirical research based on the general scheme of forces acting on a fighting tracked vehicle and allow to theoretically estimate the dynamic load of mechanic-driver's workplace.ResultsIn the study, the author developed an improved model of the movement of a fighting tracked vehicle, which describes the spatial movement of its body in motion on the support surface of a complex profile and allows to estimate theoretically the dynamic workload of the driver’s workplace, which provides a basic design of a dynamic platform in six degrees of freedom and will provide to develop the requirements for the modernization of dynamic simulators.ConclusionsWhen performing combat tasks mechanic-driver of FTV is exposed to the effects of spatial movements of different nature. The mechanic-driver during the movement of FTV feels a wide range of influences that are caused by the interaction of the tracked running gear (TRG) with the bearing surface and change the direction of movement of FTV.

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Wong, J. Y. "On the role of mean maximum pressure as an indicator of cross-country mobility for tracked vehicles." Journal of Terramechanics 31, no. 3 (May 1994): 197–213. http://dx.doi.org/10.1016/0022-4898(94)90016-7.

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Kotiev, G., B. Padalkin, A. Miroshnichenko, A. Stadukhin, and B. Kositsyn. "A theoretical study on the high-speed electric tracked vehicle mobility." IOP Conference Series: Materials Science and Engineering 820 (May 28, 2020): 012012. http://dx.doi.org/10.1088/1757-899x/820/1/012012.

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Shabbir, Syed Talat, and Chen Hui-yan. "Design, Modeling and Virtual Validation of Mobility platform of Tracked Vehicle." MATEC Web of Conferences 95 (2017): 09007. http://dx.doi.org/10.1051/matecconf/20179509007.

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Liu, Yi Le, Zhi Zhao Peng, Yong Qiang Gao, and Jie Yue. "Design and Analysis of MR Damper with Radial Duct for Tracked Vehicle Suspension." Advanced Materials Research 311-313 (August 2011): 2245–50. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.2245.

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This study presents the development of a MR damper applied to the suspension of tracked vehicles to improve the ride comfort and mobility. The MR valve is constrained to a specific cylindrical volume in order to keep the same geometry with the original damper. Radial duct is selected for its high efficiency and small volume requirement. The design rule is to enlarge the dynamic force range of the damper under the condition that the off-state force accords with the fail-safe principle. So the mechanical modeling is established and the influencing factors of adjustable coefficient are analyzed so as to determine the geometry parameters of MR valve. A set of experiments are performed to verify the theoritical analysis. The experimental results illustrate the designed MR damper has a good performance of energy dissipation and can be used to practical applications.

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Kuznetsova, V. N., and R. V. Romanenko. "Electromechanical transmission of tracked machine energy characteristics study." Russian Automobile and Highway Industry Journal 18, no. 1 (March 30, 2021): 12–29. http://dx.doi.org/10.26518/2071-7296-2021-18-1-12-29.

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Introduction. The use of an electromechanical transmission in the design of a tracked vehicle allows an increase in the complex indicator of mobility, an increase in the range, fuel efficiency, maximum speed, a decrease in acceleration time, etc. The improvement of these indicators is achieved mainly due to the different performance characteristics of the internal combustion engine and the energy characteristics of electrical machines. The latter fact makes it possible to ensure the operation of the power plant of the tracked vehicle in such a way as to avoid unfavorable operating modes of both the internal combustion engine and the elements of the electromechanical transmission (a generator, a traction electric motor, an energy storage) from the point of view of energy efficiency, and to realize the high efficiency of the entire system.Research methods. To improve the mobility and implement a rational strategy for electromechanical transmission control, it is necessary to have an idea of the effective modes of operation of the main elements of the power plant. As a way to solve this problem it is proposed to study the energy characteristics of the main elements of an electromechanical transmission using the developed mathematical model for various modes of movement of a tracked vehicle.Results. Modeling the motion of a tracked vehicle with an electromechanical transmission makes it possible, in addition to determining the transmission parameters, to formulate preliminary requirements for its characteristics.Discussion and conclusion. To solve these problems, it is necessary to simulate the process of movement of a tracked vehicle, taking into account the initial data that are adequate to real operating conditions.

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Williams, James M., Farshid Vahedifard, Isaac L. Howard, Arman Borazjani, George L. Mason, and Jody D. Priddy. "Mobility guidance for tracked vehicles on fine-grained soil from historical full-scale test data in DROVE 2.0." Journal of Terramechanics 84 (August 2019): 1–12. http://dx.doi.org/10.1016/j.jterra.2019.04.003.

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Wong, J. Y. "Computer-aided methods for the optimization of the mobility of single-unit and two-unit articulated tracked vehicles." Journal of Terramechanics 29, no. 4-5 (July 1992): 395–421. http://dx.doi.org/10.1016/0022-4898(92)90044-k.

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Dushchenko, Vladislav, Serhii Vorontsov, Vyacheslav Masliyev, Oleg Agapov, Roman Nanivskyi, Yurii Cherevko, and Anton Masliiev. "Comparing the physical principles of action of suspension damping devices based on their influence on the mobility of wheeled vehicles." Eastern-European Journal of Enterprise Technologies 4, no. 5(112) (August 31, 2021): 51–60. http://dx.doi.org/10.15587/1729-4061.2021.237312.

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This paper reports the comparison of two physical principles of action of suspension damping devices based on their influence on the mobility indicators for an 8×8 wheeled machine. A radical difference between these principles of action is the dependence of resistance forces on the speed of the relative movement of working bodies (internal friction: hydraulic shock absorbers) or on the relative movement of working bodies (external friction: friction shock absorbers). Widespread hydraulic shock absorbers have certain disadvantages that do not make it possible to further increase the mobility of wheeled or tracked vehicles without the use of control and recuperation systems. In turn, in friction shock absorbers, the use of new materials has eliminated many of their shortcomings and thus can provide significant advantages. It was established that the application of friction shock absorbers for a given wheeled vehicle did not significantly affect the speed compared to hydraulic ones. The main factor that prevented the implementation of the advantages of friction shock absorbers was the insufficient suspension travel. However, friction shock absorbers absorbed 1.76...2.3 times less power, which reduced the load on nodes and increased efficiency (autonomy). In addition, a more uniform load on suspensions was ensured, which improved their resource, and, due to the prevailing vertical oscillations of the suspended body over the longitudinal-angular ones, the geometric passability improved as well. The comparison of two physical principles of action of damper suspension devices in a wheeled vehicle has shown that the use of friction shock absorbers could provide significant advantages in resolving the task relates to improving the mobility and would fundamentally affect the choice of the suspension energy recuperation system if it is applied.

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Kim, Yoonsun, Youngjin Park, and Byunghak Kwak. "F-5-2-1 Preview control of high mobility tracked vehicle suspension." Proceedings of the Asian Conference on Multibody Dynamics 2002 (2002): 427–32. http://dx.doi.org/10.1299/jsmeacmd.2002.427.

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Usov, O. A., G. S. Beloutov, R. N. Korol'kov, and A. V. Loyko. "COMPARATIVE ANALYSIS OF MILITARY TRACKED VEHICLES WITH ELECTROMECHANICAL AND MECHANICAL TRANSMISSION IN TERMS OF OPERATIONAL MOBILITY AND FUEL EFFICIENCY." St. Petersburg State Polytechnical University Journal 238, no. 1 (April 2016): 163–71. http://dx.doi.org/10.5862/jest.238.17.

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Bin, Wei, He yongyong, Wang Wei, and Luo jianbin. "Simulation and experiment of viscous torque for disengaged wet clutches of tracked vehicle." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 4 (July 19, 2018): 593–604. http://dx.doi.org/10.1177/1350650118788143.

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In order to predict the viscous drag loss for tracked vehicles, the drag torque of the friction pair with different grooves was investigated in this paper. The traditional computation method is difficult to adapt for the new kinds of friction plates with complex grooves. A numerical method with the help of CFD models is adopted to simulate the fluid flow status in the grooves and the drag torque was obtained by the accumulation of the discrete viscous force. The simulation results implied that the plates with different kinds grooves were provided with various characteristics of viscous torque and these characteristics could be affected by the rotation direction for the plate with spiral grooves, which are proved in experiment. Meanwhile, it was also found that the two kinds of plates with double arc or spiral grooves, which have different sensitive parameters in drag dissipation, have to perform accurate flow control and clearance design respectively. The simulations and experiments showed that the ‘positive spiral grooves’ friction plates had minimum drag torque in regular heavy-duty conditions. It can be used in transmission system with requirements of limited space and high mobility, which can lead to better heat dissipation and less power loss.

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Lee, Byung-Hoon, and Byung-Yil Souh. "A Software Development for the Dynamic Analysis of a High Mobility Tracked Vehicle." Transactions of the Korean Society of Mechanical Engineers A 33, no. 1 (January 1, 2009): 89–97. http://dx.doi.org/10.3795/ksme-a.2009.33.1.89.

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Liu, Weiwei, and Kai Cheng. "An Analytical Model for Predicting Ground Pressure under a Rigid-Flexible Tracked Vehicle on Soft Ground." Mathematical Problems in Engineering 2020 (January 22, 2020): 1–7. http://dx.doi.org/10.1155/2020/6734121.

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Ground pressure is a significant parameter for the mobility, tractive performance, and soil compaction. In this study, an analytical model for predicting ground pressure distribution under a rigid-flexible tracked vehicle on soft ground was developed. The model considered the primary design parameters of the tracked vehicle, soil characteristics, and soil shear. The ground pressure was not uniform, and its maximum values under the roadwheels were 90.20, 103.57, and 150.14 kPa. The ground pressure was inversely proportional to the ratio of the lengths of the flexible track and rigid grouser. An experiment was conducted to verify the analytical model. The maximum error between the measured and simulated results was smaller than 8%, thereby verifying the analytical model.

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Wong, J. Y., and Wei Huang. "An Investigation into the Effects of Initial Track Tension on Soft Ground Mobility of Tracked Vehicles Using an Advanced Computer Simulation Model." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 220, no. 6 (June 2006): 695–711. http://dx.doi.org/10.1243/09544070jauto58.

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Kang, Okhyun, Youngjin Park, Youn-sik Park, and Moonsuk Suh. "Look-ahead preview control application to the high-mobility tracked vehicle model with trailing arms." Journal of Mechanical Science and Technology 23, no. 4 (April 2009): 914–17. http://dx.doi.org/10.1007/s12206-009-0311-x.

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46

Alexa, Octavian, Iulian Coropețchi, Alexandru Vasile, Ionica Oncioiu, and Lucian Ștefăniță Grigore. "Considerations for Determining the Coefficient of Inertia Masses for a Tracked Vehicle." Sensors 20, no. 19 (September 29, 2020): 5587. http://dx.doi.org/10.3390/s20195587.

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The purpose of the article is to present a point of view on determining the mass moment of inertia coefficient of a tracked vehicle. This coefficient is very useful to be able to estimate the performance of a tracked vehicle, including slips in the converter. Determining vehicle acceleration plays an important role in assessing vehicle mobility. Additionally, during the transition from the Hydroconverter to the hydro-clutch regime, these estimations become quite difficult due to the complexity of the propulsion aggregate (engine and hydrodynamic transmission) and rolling equipment. The algorithm for determining performance is focused on estimating acceleration performance. To validate the proposed model, tests were performed to determine the equivalent reduced moments of inertia at the drive wheel (gravitational method) and the main components (three-wire pendulum method). The dynamic performances determined during the starting process are necessary for the validation of the general model for simulating the longitudinal dynamics of the vehicle. Finally, the differential and algebraic equations of the virtual model approximate more accurately the actual process of the operation of the vehicle. The virtual model, through the data obtained from the simulation process, allows for the determination, indirectly, of the variation of the mass moment of inertia coefficient and its expression of approximation.

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Masmitja, I., J. Navarro, S. Gomariz, J. Aguzzi, B. Kieft, T. O’Reilly, K. Katija, et al. "Mobile robotic platforms for the acoustic tracking of deep-sea demersal fishery resources." Science Robotics 5, no. 48 (November 25, 2020): eabc3701. http://dx.doi.org/10.1126/scirobotics.abc3701.

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Knowing the displacement capacity and mobility patterns of industrially exploited (i.e., fished) marine resources is key to establishing effective conservation management strategies in human-impacted marine ecosystems. Acquiring accurate behavioral information of deep-sea fished ecosystems is necessary to establish the sizes of marine protected areas within the framework of large international societal programs (e.g., European Community H2020, as part of the Blue Growth economic strategy). However, such information is currently scarce, and high-frequency and prolonged data collection is rarely available. Here, we report the implementation of autonomous underwater vehicles and remotely operated vehicles as an aid for acoustic long-baseline localization systems for autonomous tracking of Norway lobster (Nephrops norvegicus), one of the key living resources exploited in European waters. In combination with seafloor moored acoustic receivers, we detected and tracked the movements of 33 tagged lobsters at 400-m depth for more than 3 months. We also identified the best procedures to localize both the acoustic receivers and the tagged lobsters, based on algorithms designed for off-the-shelf acoustic tags identification. Autonomous mobile platforms that deliver data on animal behavior beyond traditional fixed platform capabilities represent an advance for prolonged, in situ monitoring of deep-sea benthic animal behavior at meter spatial scales.

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YAMAKAWA, Ayumu, Satoru SASAKI, Duong NGO BACH, Takeharu HAYASHI, and Susumu TARAO. "2A2-C07 Autonomous Wheelchair Robot Takao 4 Focused on Compact Mobility(Wheeled Robot / Tracked Vehicle (2))." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2014 (2014): _2A2—C07_1—_2A2—C07_4. http://dx.doi.org/10.1299/jsmermd.2014._2a2-c07_1.

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CHIKAZAWA, Yuya, Toshinobu TAKEI, and Akira TORIGE. "1A2-H09 Approach to development of inline skate type personal mobility(Wheeled Robot/Tracked Vehicle(2))." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2012 (2012): _1A2—H09_1—_1A2—H09_2. http://dx.doi.org/10.1299/jsmermd.2012._1a2-h09_1.

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Ali, Muhammad, Muhammad Daud Kamal, Ali Tahir, and Salman Atif. "Fuel Consumption Monitoring through COPERT Model—A Case Study for Urban Sustainability." Sustainability 13, no. 21 (October 21, 2021): 11614. http://dx.doi.org/10.3390/su132111614.

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Trackers installed in vehicles gives insights into many useful information and predict future mobility patterns and other aspects related to vehicles movement which can be used for smart and sustainable cities planning. A novel approach is used with the COPERT model to estimate fuel consumption on a huge dataset collected over a period of one year. Since the data size is enormous, Apache Spark, a big data analytical framework is used for performance gains while estimating vehicle fuel consumption with the lowest latency possible. The research presents peak and off-peak hours fuel consumption’s in three major cities, i.e., Karachi, Lahore and Islamabad. The results can assist smart city professionals to plan alternative trip routes, avoid traffic congestion in order to save fuel and time, and protect against urban pollution for effective smart city planning. The research will be a step towards Industry 5.0 by combining sustainable disruptive technologies.

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