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Journal articles on the topic 'Fifth wheels'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Liu, Yanjie, Yanlong Wei, Chao Wang, and Heng Wu. "Trajectory Optimization for Adaptive Deformed Wheels to Overcome Steps Using an Improved Hybrid Genetic Algorithm and an Adaptive Particle Swarm Optimization." Mathematics 12, no. 13 (2024): 2077. http://dx.doi.org/10.3390/math12132077.

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Two-wheeled mobile robots with deformed wheels face low stability when climbing steps, and their success rate in overcoming steps is affected by the trajectory. To address these challenges, we propose an improved hybrid genetic and adaptive particle swarm optimization (HGAPSO) algorithm to optimize the deformed wheels’ trajectory for overcoming steps. HGAPSO optimizes the maximum and minimum values of the inertial weight and learning factors of the adaptive particle swarm algorithm utilizing the region-wide search capabilities of the genetic algorithm, which substantially improves the converge

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2

Palkovics, L., and M. El-Gindy. "Examination of Different Control Strategies of Heavy-Vehicle Performance." Journal of Dynamic Systems, Measurement, and Control 118, no. 3 (1996): 489–98. http://dx.doi.org/10.1115/1.2801172.

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Heavy vehicles play an economically important role in the transportation process, and their numbers have been increasing for several decades. The active safety of the highway system is an important consideration in the design of a heavy vehicle combination. In this paper, the handling characteristics of a 5-axle tractor-semitrailer is examined and used to test for the desired features of the vehicle’s handling and stability. Using these results the optimal control criterion is derived for the vehicle. Four different control strategies are examined by using the Linear Quadratic Regulator (LQR)

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Abd El-hay, Atef, Khalid A. Alsatami, and Ashraf Elrokh. "A Novel Problem and Algorithm for Solving Cordial Labeling of Some Fifth Powers of Graphs." European Journal of Pure and Applied Mathematics 18, no. 1 (2025): 5812. https://doi.org/10.29020/nybg.ejpam.v18i1.5812.

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In this paper we introduce a novel application of cordial labeling using the fifth power of graphs, demonstrating its potential for understanding and studying specific graph structures. The resulting cordial labeling scheme for the fifth power of paths, cycles, fans, wheels, lemniscate and the union of fifth power of paths and cycles graphs can provide insights into the properties and structures of these graphs. It can be used to analyze its connectivity, symmetry, and other graph-theoretical characteristics.

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4

Hartwigsen, Gail, and Roberta Null. "Full-Timing: A Housing Alternative for Older People." International Journal of Aging and Human Development 29, no. 4 (1989): 317–28. http://dx.doi.org/10.2190/e3q9-dyjm-fmuk-k05k.

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Full-timing, living year-round in a recreational vehicle, is discussed as a viable housing alternative for older people. Data were obtained from surveys distributed to 100 members of a nationally-based camping organization. Fifty-five percent of the respondents had lived in their motorhomes, fifth-wheels, or travel trailers for at least two years. Most had sold their conventional homes, planning to full-time indefinitely. Low-cost and adventurous, full-timing is discussed as a lifestyle especially suited for older people in the context of today's mobile society.

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Nakajima, Shuro, and Eiji Nakano. "Adaptive Gait for Large Rough Terrain of a Leg-Wheel Robot (Fifth Report: Integrated Gait)." Journal of Robotics and Mechatronics 21, no. 3 (2009): 419–26. http://dx.doi.org/10.20965/jrm.2009.p0419.

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A leg-wheel robot has mechanically separated four legs and two wheels, and it performs high mobility and stability on rough terrains. The adaptive gait for large rough terrains of the leg-wheel robot is composed of three gait strategies. In this paper, the integrated gait of the normal gait and the adaptive gaits for large rough terrain is proposed. The proposed gait has following features: 1. There is a path from a gait to any other gait. 2. The robot does not fall into the endless loop of detection, because it moves whenever it detects something. 3. A gait changes finally to step-over gait w

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Forbes, David, Gary Page, Martin Passmore, and Adrian Gaylard. "A study of computational methods for wake structure and base pressure prediction of a generic SUV model with fixed and rotating wheels." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, no. 9 (2017): 1222–38. http://dx.doi.org/10.1177/0954407016685496.

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This study is an evaluation of the computational methods in reproducing experimental data for a generic sports utility vehicle (SUV) geometry and an assessment on the influence of fixed and rotating wheels for this geometry. Initially, comparisons are made in the wake structure and base pressures between several CFD codes and experimental data. It was shown that steady-state RANS methods are unsuitable for this geometry due to a large scale unsteadiness in the wake caused by separation at the sharp trailing edge and rear wheel wake interactions. unsteady RANS (URANS) offered no improvements in

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7

Nizhegorodov, A. I. "THE PROCESSES OF ROLLING WHEEL AND TRACK SYSTEMS OF HOISTING-AND-TRANSPORT, CONSTRUCTION, ROAD VEHICLES AND OTHER BODIES INFLUENCED BY FORCE FACTORS. FIFTH LECTURE." Spravochnik. Inzhenernyi zhurnal, no. 287 (February 2021): 39–46. http://dx.doi.org/10.14489/hb.2021.02.pp.039-046.

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The article consistently sets forth the material of the fifth lecture on the course “Theory of hoisting-and-transport, construction, road vehicles and equipment”, including the interaction of running wheels of tower, bridge and gantry cranes with guides (rails) and determining the resistance forces in the running gear of cranes and freight carts; interaction of roller hard wheels and elastic pneumatic tires with soils and coatings. HTCRVE caterpillar movers and their interaction with soils, as well as the motion of a non-circular solid body on an inclined surface, are considered.

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Thangavel, M., S. Raghavan, R. Raviprakash, V. Rubesh Raja, and Shankar Manickam. "Design and Development of Swarm Robots for Security Applications." Applied Mechanics and Materials 110-116 (October 2011): 4757–64. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.4757.

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In this paper, a robot design suitable for swarm based security system is presented. First, a possible layout for swarm based security system is conceptualized and literatures related to mobile robot design are reviewed. Second, a set of conceptual designs for the swarm robot are evolved and discussed. Third, expressions are arrived for weight, rolling resistance, obstacle crossing ability and amount of slip based on robot geometric parameters. Fourth, the obstacle crossing ability for rear wheel driven and rear wheel driven robots are investigated. Fifth, a prototype is made and the analytica

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9

Kravchenko, Lyudmila V., Vladimir A. Kravchenko, Victor V. Zhurba, and Izzet M. Melikov. "Agro Cross-Country Ability of Combine Harvesters with Driving Wheels Equipped with Different Tires." Engineering technologies and systems 35, no. 1 (2025): 101–20. https://doi.org/10.15507/2658-4123.035.202501.101-120.

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Introduction. An important area of agricultural industry development is improving the operating efficiency of wheeled mobile agricultural machinery. The real situation analyzing has shown the presence of a number of difficulties associated with many factors including high agricultural machine weight, which, along with increased performance, leads to the over-compaction of all soil layers that results in reduced yields of cultivated crops and increased energy consumption during subsequent processing. Despite the significant successes of domestic and foreign researchers and research teams in thi

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10

Bourassa, P., L. Maillette, and M. Brezina. "ROAD HANDLING BEHAVIOUR OF TRACTOR SEMITRAILER EQUIPPED WITH FIFTH WHEELS ANTIJACKKNIFE DEVICES." Vehicle System Dynamics 17, sup1 (1988): 57–60. http://dx.doi.org/10.1080/00423118808969243.

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11

Bulgakov, Volodymyr, Aivars Aboltins, Hristo Beloev, et al. "Theoretical Investigation of Selection (Calculation) of Design Parameters of Modular Draft Device in Aggregation of Semitrailers." Applied Sciences 12, no. 20 (2022): 10267. http://dx.doi.org/10.3390/app122010267.

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One of the directions for expanding the functional properties of modular draft devices (MDD) is their use with semitrailers (using a fifth-wheel coupling, installed on the technological module). The issue with this is due to their ability to create such a redistribution of the MDD operational mass along the semitrailer’s axles whereby the loss of control of the entire transport aggregate is possible. To solve this problem, regularities have been established to consider in choosing the design parameters of the MDD. It has been established by theoretical calculations that an increase in the angl

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Fomin, Aleksandr, Aleksey Apatenko, and Nadezhda Sevryugina. "Ensuring the safety of animals and agricultural products by increasing the stability of the tractor semi-trailer." E3S Web of Conferences 542 (2024): 03009. http://dx.doi.org/10.1051/e3sconf/202454203009.

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The article considers the stability of transportation and technological machines considering design features and operating conditions. The study highlights the importance of establishing scientifically based requirements for parameters and application of design solutions, which ensure comfortable conditions for transporting animal and vegetable cargoes of the agro-industrial complex. The authors present a mathematical model for assessing the stability of a multilink machine with the allocation of inertia forces as key parameters. The authors propose to use the calculated model when studying th

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Noei Baghban, Seyed Morteza, and Mahmoudreza Rahbarqazi. "Modeling corruption perception effects on non-electoral participation in Morocco (2018-2019)." Política y Sociedad 58, no. 3 (2021): e73306. http://dx.doi.org/10.5209/poso.73306.

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Theoretical literature has two competing theories about the effects of corruption on society: the first group sees corruption as something that "Greases the Wheels of" the administrative and economic systems of countries and the second group calls it something that "Sands the Wheels" of those systems. This study examines the direct and indirect effects of corruption perceptions among Moroccan citizens on the non-electoral participation using the fifth wave data of the Arab barometer, assuming the first group's ideas. The fifth wave of this data was obtained in 2019-2018 and surveyed 2400 Moroc

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14

Loparev, A. A., A. M. Venglinskiy та A. S. Komkin. "Slipping process research of drive wheels of the МТЗ-100 tractor in breakaway and acceleration modes". Traktory i sel hozmashiny 81, № 1 (2014): 18–20. http://dx.doi.org/10.17816/0321-4443-65654.

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Results of the angular velocity and angular acceleration measuring for a drive wheel of tractor МТЗ-100 when it rolls away after interrupted breakaway are presented. Tests have been carried out in the stubble field using four gearings of fifth range with a hook load of 10 kN.

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Evseev, Kirill B. "Curvilinear motion control laws for a semi-trailer caterpillar train for off-road cargo transportation." Tractors and Agricultural Machinery 89, no. 4 (2023): 263–76. http://dx.doi.org/10.17816/0321-4443-111978.

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BACKGROUND: For transport accessibility in areas with an undeveloped road network, the use of tracked trains that provide low ground pressure is a rational solution. To ensure the mobility of a semi-trailed, unmanned caterpillar train, which can be controlled remotely by a driver-operator or by an automatic unmanned driving system, traffic control laws are needed. AIMS: Ensuring energy efficiency in curve control of a unmanned semi-trailer tracked train for off-road freight transport. METHODS: The methods of simulation mathematical modelling and analytical methods based on the cons

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16

Buckley, Elesha, Myron Labat, David Lee, and Cherie Labat. "Are We Spinning Our Wheels? The Impact of PBIS, Counseling, and Mentoring on the Behavior and Achievement of Elementary Age African American Males." International Research in Higher Education 4, no. 4 (2019): 7. http://dx.doi.org/10.5430/irhe.v4n4p7.

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The gap in educational achievement between African American males and their peers plays a key role in one of the most substantial problems facing American society (Burchinal, McCartney, Steinberg, Crosnoe, Friedman, McLoyd, & Picanta, 2011). However, the challenges faced by those working to narrow the achievement gap between African American males and their counterparts continue to persist. The purpose of this study was to explore the impact of Positive Behavior Intervention and Support (PBIS), counseling, and mentoring on disruptive classroom behavior among African American males. The res

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17

MAZUR, VLADIMIR V. "EVALUATION OF THE EFFECTIVENESS OF COMBINING CORN CULTIVATOR WORKING TOOLS." Agricultural engineering, no. 4 (2022): 37–41. http://dx.doi.org/10.26897/2687-1149-2022-4-37-41.

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When cultivating corn, large farm holdings use a wide range of various modern herbicides to control weeds. For many small farms, herbicidal weeding of crops is practically impossible due to expensive inputs. To minimize corn production costs, the author analyzed the effectiveness of combining cultivator working tools for row-to-row processing of corn crops. The experiment was conducted in the Tambovka district of the Amur region. A “Bereginya” seeder was used to sow medium-ripened Falcon maize (hybrid). The seeding rate was 80…90 thousand germinating grains per 1 ha. The seeding depth was 4…6

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18

Olivares, Alberto, and Ernesto Staffetti. "Time-Optimal Attitude Scheduling of a Spacecraft Equipped with Reaction Wheels." International Journal of Aerospace Engineering 2018 (April 8, 2018): 1–14. http://dx.doi.org/10.1155/2018/5947521.

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The time-optimal control problem of a spacecraft equipped with reaction wheels has been studied, in which the spacecraft is constrained to sequentially assume a set of attitudes, whose order is not specified. This attitude scheduling problem has been solved as a multiphase mixed-integer optimal control problem in which binary functions have been introduced to model the choice of the optimal sequence of target attitudes and to enforce the constraint of adopting once and only once each attitude. Given the dynamic model of the spacecraft, the initial and final attitudes, and a set of target attit

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19

Seki, Shuto, Keisuke Sugiura, Satoshi Nakano, Masao Watanabe, and Manabu Yamada. "Development of Wall Hammering Inspection Systems Using Two-Wheeled Multi-Copters." Journal of Robotics and Mechatronics 36, no. 5 (2024): 1043–54. http://dx.doi.org/10.20965/jrm.2024.p1043.

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In this study, we investigated inspection robots that can safely, accurately, and quickly perform hammer sound inspections on tile exterior walls and present new wall hammering inspection systems using two-wheeled multi-copters. Our results yielded the following five advantages. First, the proposed multi-copter can use its wheels not only to move freely on the walls of buildings but also to overcome obstacles on the walls. Therefore, almost any tile wall surface can be inspected for hammering sound. Second, the multi-copter was equipped with both hammer-shaped rods to hit the tile exterior wal

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20

Shin, Jindong, Hyangee Lee, Jeehyun Sohn, Nakyum Yoo, and Yuntae Kim. "Examining Parking Management Methods in Alleyways Through Fire Engine Dispatch Experiments." Journal of the Korean Society of Hazard Mitigation 24, no. 3 (2024): 83–96. http://dx.doi.org/10.9798/kosham.2023.24.3.83.

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Rapid response is essential to reduce damage to life and property from fires. However, fire engines are being delayed due to vehicles parked in alleyways. To solve this problem, compulsory disposition has been legislated; however, there are few cases of its use. Therefore, based on advice from experts and firefighters, we conducted 17 experiments of four types and summarized the results. Experimental results: First, The minimum alleyway width required for emergency fire engine dispatch is 3.5 meters. Second, one-sided parking in a line can minimize fire engine dispatch delays. Third, when park

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Deitz, Dan. "Bringing Dashboards Up-to-date." Mechanical Engineering 120, no. 09 (1998): 74–75. http://dx.doi.org/10.1115/1.1998-sep-4.

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This article illustrates tests in a digital laboratory that helped engineers ensure that a critical bracket would support the plastic-molded models increasingly favored by consumers. A case in point is Coachmen Recreational Vehicle Co. of Middlebury, IN. Coachmen engineers have used finite element analysis software from Pittsburgh-based Algor Inc. to test an innovative new dashboard under loading conditions experienced by a recreational vehicle (RV) while on the road. Coachmen Recreational Vehicle Co. designs and manufactures RVs, including motorhomes, travel trailers, fifth wheels, and truck

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22

Shalupin, Pavel. "THERMAL CONTROL INVESTIGATION OF ROLLING-STOCK SHOE BRAKES BY SIMULATION METHOD." Bulletin of Bryansk state technical university 2020, no. 4 (2020): 31–42. http://dx.doi.org/10.30987/1999-8775-2020-4-31-42.

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The development of heavy speed freight train communications in the Russian Federation results in the increased thermal loading of braking system elements of rolling-stock, in particular, in shoe brakes. Taking into account the requirements of branch program documents on wheel life increase, it is evident that the further development of freight communications requires a complex application of thermal diagnostics means for auto-brake equipment of rolling-stock during a train motion.  The statistics shows that the fifth part of wheel pair failures is connected with thermal-mechanical damage

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Godzhaev, Zahid A., and Mikhail V. Kapitonov. "The mathematical model of turning kinematics of a two-section active road train with real and ideal control systems of semitrailer wheels turning." Tractors and Agricultural Machinery 90, no. 2 (2023): 117–22. http://dx.doi.org/10.17816/0321-4443-245790.

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BACKGROUND: The development of aerospace machinery leads to the need for transportation of increasingly large-sized indivisible cargo by ground vehicles. At the same time, taking into account the peculiarities of the transported cargo, a number of special requirements including maneuverability are imposed on vehicles. AIMS: Defining the magnitude of the semitrailer path offset relative to the truck path. METHODS: The solution of the system of ordinary differential equations is performed using the MATLAB/Simulink software implementing the Runge-Kutta-Felberg method of the fourth-fif

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Laxmikant, Joshi, and Londhe Vikram. "Fifth Wheel Mechanism." Research and Reviews on Experimental and Applied Mechanics 5, no. 3 (2023): 1–3. https://doi.org/10.5281/zenodo.7560705.

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<em>During day to day increase in  population and use of vehicle is increases simultaneously .in case of four wheelers the recent days shows there is problem of parking is facing to driver. It takes more than 3-4 minutes approximately .it is necessary to more alert during parking so as to avoid the hitting the other cars. So to avoid or overcome these problem a concept or method of parallel parking is made. With the help of fifth wheel mechanism driver can easily park the vehicle between the parallel parking. A pneumatic cylinder and solenoid valve is used to in fifth wheel mechanism for

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Zou, Lixing. "The Ten Relationships of Globalization." Research in Economics and Management 7, no. 1 (2022): p21. http://dx.doi.org/10.22158/rem.v7n1p21.

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This paper study the complex relationships faced by globalization. First, the relationship between commonality and diversity are objectively inevitable. Second, artificial intelligence and human development need to avoid harm in the direction of healthy human development. Third, the virtual space and the real world should never be “flipped by things” not should the things be “made void”. Fourth, digitalism and humanism: digitalism is becoming a cult, traditional humanism is being eclipsed, but human math cannot trump Heaven’s law. Fifth, humanity and nature need to be integrated. Sixth, the pa

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Tymoshyk, Mykola. "The Editor's-in-chief Address." Ukrainian Information Space, no. 1(13) (March 29, 2024): 10–12. https://doi.org/10.31866/2616-7948.1(13).2024.300808.

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Dear Reader! This is already the fifth issue of the professional scientific journal on journalism and information and archival affairs, which a small team of enthusiasts from KNUKIM produces in difficult wartime. Hence, it seems logical that a number of publications in this issue are marked with a "military stamp". The researchers' attempts to tackle what I believe to be an arch-relevant issue today should be strongly welcomed. This is not easy, because it requires, first and foremost, "field research", the sustained collection, generalisation and comprehension of a significant amount of empir

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Azhari, Ahmadani, and Yeni Melia. "Akuntabilitas dan Transparansi Pengelolaan Anggaran Pendaptan dan Belanja Nagari Pasilihan Kecamatan X Koto Diatas Kabupaten Solok Tahun 2019." Jurnal Akuntansi Syariah (JAkSya) 1, no. 2 (2021): 93. http://dx.doi.org/10.31958/jaksya.v1i2.4361.

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Accountability and transparency of the management of the Pasilihan nagari budget for 2019 has become a concern since the nagari government received a large disbursement of funds compared to previous years. In carrying out the wheels of government, the Pasilihan nagari government has not yet been optimal in socializing and publishing reports on the realization of the nagari revenue and expenditure budget to the public. Based on Permendagri Number 113 of 2014 concerning village financial management, the fifth part of the accountability article 40 states that the budget realization report must be

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Liu, Kai, and Cheng Guo. "The Auxiliary Function of Intelligent Mobile Robot in the Standard Training of Children’s Sports Movement." Wireless Communications and Mobile Computing 2022 (March 23, 2022): 1–13. http://dx.doi.org/10.1155/2022/5157954.

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Mobile robots belong to mechanical devices. Mobile robots are commanded by humans and restricted by the principles established by artificial intelligence technology, mainly to assist humans in dangerous tasks. Intelligent mobile robot is a system that integrates perception, analysis, and decision-making, and it integrates a number of high-end technologies. It is currently the most active field of technological development. Infant sport is essentially a process of cultivating and caring for the physical fitness of children. This article aims to explore the auxiliary role of intelligent mobile r

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HARRISON, R. E. W. "TECHNOLOGY OF THE FIFTH WHEEL." Journal of the American Society for Naval Engineers 65, no. 4 (2009): 671–74. http://dx.doi.org/10.1111/j.1559-3584.1953.tb03933.x.

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WEN, Yanke, Hongchao JI, Zhongman CAI, Guolong CUI, and Haoqian ZHANG. "Lightweight Finite Element Analysis and Experimental Study of 90# Fifth Wheel." Mechanics 30, no. 1 (2024): 83–90. http://dx.doi.org/10.5755/j02.mech.32962.

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The fifth wheel is a connecting device between the semi-trailer and the tractor, which plays the role of connecting and steering. According to the finite element analysis technology, the fifth wheel model is established by CREO software, and import the established model into HyperWorks software, the static analysis and lightweight design of the structure are carried out by finite element simulation. Finally, the optimal solution of fifth wheel structure is obtained, The static performance of the optimized fifth wheel is verified, which proves that the optimized structure is reasonable and meet

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FRYSHEV, Sergii, Vasyl LUKACH, Mykola IKALCHYK, and Volodymyr VASYLYUK. "IMPROVEMENT OF GRAIN TRANSPORTATION TECHNOLOGY FROM COMBINES." Herald of Khmelnytskyi National University. Technical sciences 315, no. 6(1) (2022): 203–7. http://dx.doi.org/10.31891/2307-5732-2022-315-6-203-207.

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The article provides a rationale for an improved technological process for transporting grain from grain combines (ЗK) by a semi-trailer dump truck (НП) in an aggregate with a tractor and a saddle trailer. One of the main reserves for increasing the productivity of a combine is to increase the utilization factor of its shift time by using transshipment technology based on interoperation compensators – tractor trailers for reloaders of the PBN-30, PBN-40, PBN-50 brands, etc. and heavy vehicles (AT), in the body which grain is being reloaded outside the field. The lack of technology is significa

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Fryshev, Sergii, Vasyl Lukach, Mykola Ikalchyk, and Volodymyr Vasylyuk. "IMPROVEMENT OF GRAIN TRANSPORTATION TECHNOLOGY FROM COMBINES." Herald of Khmelnytskyi National University. Technical sciences 313, no. 5 (2022): 238–42. http://dx.doi.org/10.31891/2307-5732-2022-313-5-238-242.

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The article provides a rationale for an improved technological process for transporting grain from grain combines (ЗK) by a semi-trailer dump truck (НП) in an aggregate with a tractor and a saddle trailer. One of the main reserves for increasing the productivity of a combine is to increase the utilization factor of its shift time by using transshipment technology based on interoperation compensators – tractor trailers for reloaders of the PBN-30, PBN-40, PBN-50 brands, etc. and heavy vehicles (AT), in the body which grain is being reloaded outside the field. The lack of technology is significa

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Posmetev, Valeriy, Vadim Nikonov, and Aleksandr Avdyuhin. "PROMISING DESIGN OF A RECUPERATIVE SPRING-HYDRAULIC FIFTH WHEEL TRAILER TRUCK WITH A SEMITRAILER." Actual directions of scientific researches of the XXI century: theory and practice 8, no. 1 (2020): 299–305. http://dx.doi.org/10.34220/2308-8877-2020-8-1-299-305.

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The relevance of the development and use of new promising designs of fifth wheel coupling devices for forestry tractors with semitrailers, aimed at ensuring the simplicity of the design of fifth wheel coupling devices, their high reliability, safety in work, reducing metal consumption and the possibility of accumulating and using energy that is not efficiently dissipated into the environment, is substantiated. The operating conditions of timber tractors with semitrailers for timber removal are described. The main transients occurring in the fifth wheel coupling and contributing to the emergenc

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Fernandes, P. J. L. "Examination of a failed fifth wheel coupling." Engineering Failure Analysis 5, no. 1 (1998): 29–33. http://dx.doi.org/10.1016/s1350-6307(97)00024-1.

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35

Reboh, Y., S. Griza, A. Reguly, and T. R. Strohaecker. "Failure analysis of fifth wheel coupling system." Engineering Failure Analysis 15, no. 4 (2008): 332–38. http://dx.doi.org/10.1016/j.engfailanal.2007.02.007.

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36

Komoriya, Kiyoshi. "Special Issue on Mobile Robot." Journal of Robotics and Mechatronics 11, no. 1 (1999): 1. http://dx.doi.org/10.20965/jrm.1999.p0001.

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Mobility, or locomotion, is as important a function for robots as manipulation. A robot can enlarge its work space by locomotion. It can also recognize its environment well with its sensors by moving around and by observing its surroundings from various directions. Much researches has been done on mobile robots and the research appears to be mature. Research activity on robot mobility is still very active; for example, 22% of the sessions at ICRA'98 - the International Conference on Robotics and Automation - and 24% of the sessions at IROS'98 - the International Conference on Intelligent Robot

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Posmetev, Valeriy, Vadim Nikonov, Viktor Posmetev, and Aleksandr Avdyuhin. "SIMULATION MODELING OF RECUPERATIVE SPRING-HYDRAULIC FIFTH-WHEEL COUPLING OF FOREST TRACTOR WITH SADDLE TRAILER." Forestry Engineering Journal 10, no. 4 (2021): 227–42. http://dx.doi.org/10.34220/issn.2222-7962/2020.4/19.

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The importance of using timber road transport in the technological process of harvesting and hauling timber has been substantiated. The influence of the design flaws of fifth-wheel couplings on the safety indicators of the road train, its stability, productivity, and fuel consumption, which are manifested during the operation of timber tractors with semitrailers, has been revealed. The work of foreign authors aimed at improving the efficiency of using fifth-wheel couplings used in the designs of tractors with saddle trailer has been considered. The advantages of using the proposed recuperative

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Posmetev, Valeriy, Mikhail Drapalyuk, Vadim Nikonov, and Viktor Posmetev. "RESULTS OF PROCESS SIMULATION OF FEEDING AND DISTRIBUTING LUBRICANT IN THE FIFTH-WHEEL COUPLING OF HAULING TRACTOR WITH SADDLE TRAILER." Forestry Engineering Journal 11, no. 1 (2021): 132–46. http://dx.doi.org/10.34220/issn.2222-7962/2021.1/12.

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The necessity of increasing the efficiency of the fifth wheel coupling of hauling tractor with saddle trailer has been substantiated. The analysis of the works of foreign scientists investigating the influence of fifth wheel couplings on the efficiency of functioning of road trains has been carried out. The importance of periodically applying the lubricant recommended by the manufacturer to the rubbing surfaces of the base plate and the saddle of the fifth wheel coupling of hauling tractor has been described. The goal of the work is formulated to determine the optimal number of outlets in the

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Presecan, Mădălina Florina, Gabriel Osei Forkuo, and Stelian Alexandru Borz. "Soil Compaction Induced by Three Timber Extraction Options: A Controlled Experiment on Penetration Resistance on Silty-Loamy Soils." Applied Sciences 14, no. 12 (2024): 5117. http://dx.doi.org/10.3390/app14125117.

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Local effects of ground-based timber harvesting, such as soil compaction, are often important for forest management and resilience of forests. One way to evaluate the compaction of the forest soils is by the penetration resistance. Most often, however, the control over the weight of the means used to extract the wood is difficult to maintain, influencing therefore the outcomes of the comparison studies. In this study, a controlled experiment was set up to see how the penetration resistance is affected by the number of passes of three wood extraction methods. A first objective of the study was

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Posmetev, Valeriy, Vadim Nikonov, Viktor Posmetev, and Vladimir Zelikov. "MODELING THE OPERATION OF A RECUPERATIVE SPRING-HYDRAULIC FIFTH-WHEEL COUPLING LOCATED IN THE SEMITRAILER OF LUMBER TRUCK." Forestry Engineering Journal 11, no. 2 (2021): 133–48. http://dx.doi.org/10.34220/issn.2222-7962/2021.2/13.

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The substantiation of the necessity of using timber trucks, consisting of timber tractors with semi-trailers, when transporting timber, is given. Attention is focused on improving the efficiency of the functioning of log trucks by con-structive improvement of the fifth-wheel couplings used in them. The analysis of scientific works of foreign scientists engaged in the study of the influence of fifth- wheel coupling on the efficiency of log trucks is carried out. A promising scheme of a recuperative spring-hydraulic fifth-wheel coupling, located in the front part of the semi-trailer frame of a t

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Yu Dobretsov, R., Yunfeng Shen, T. N. Vagizov, et al. "Computational approach to estimation the transverse Stability of multi-section chassis of extreme cross-country vehicles." Journal of Physics: Conference Series 2388, no. 1 (2022): 012065. http://dx.doi.org/10.1088/1742-6596/2388/1/012065.

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Abstract Multi-section chassis have a great potential for geometric and fifth wheel cross-country ability. An example is a model of a six-wheeled all-wheel drive planetary rover designed at VNIITM to study the mobility of the mobile laboratory of the Mars-94/96 project. The concept of extreme cross-country chassis involves the use of three articulated sections with a wheel mover with a removable track or a permanent track module. The rotation is carried out by changing the relative position of the sections in the plan. The article proposes mathematical models that make it possible to calculate

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IVANOV, Rosen, Gergana STANEVA, Georgi KADIKYANOV, and Iliyana MINKOVSKA. "COMPARING TWO METHODS FOR TESTING THE BRAKING PROPERTIES OF CARS." Transport Problems 20, no. 1 (2025): 73–83. https://doi.org/10.20858/tp.2025.20.1.07.

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This paper examines two different methods for vehicle braking performance testing, one involving piezo sensors and the other involving a “fifth” wheel. A comparison of the results with the two testing systems was done. The braking process of two cars (with and without ABS) was tested. The results show that very close values were obtained by the two systems. The advantages of these systems were analyzed. The system with a piezo sensor gave more informative results for the braking process. The system with the “fifth” wheel provided an easy way to estimate the car’s braking performance.

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Gupta, Subodh. "Technology Focus: EOR Modeling (January 2022)." Journal of Petroleum Technology 74, no. 01 (2022): 54–55. http://dx.doi.org/10.2118/0122-0054-jpt.

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No one will be surprised to learn of the reduction in the produced literature on enhanced oil recovery (EOR) this past year measured in terms of papers produced through various SPE forums. The constraints created by the COVID-19 pandemic have been unprecedented. More encouraging and noteworthy is the fact that, even in such hard times, the wheels of knowledge have kept turning. Statistics are important in knowing where the sharp minds of SPE members are investing their energies. Typically, this is also in proportion to what those members need. Hence, it is noteworthy that more than a fifth of

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Nikonov, Vadim, Valerii Posmetev, and Viktor Posmetev. "RESULTS OF THE STUDY OF THE MOVEMENT OF A TIMBER ROAD TRAIN EQUIPPED WITH A FITCH WITH A SPRING SHOCK ABSORBER." Voronezh Scientific-Technical Bulletin 4, no. 4 (2022): 102–20. http://dx.doi.org/10.34220/2311-8873-2022-102-120.

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Based on the analysis of scientific works of foreign authors, the main factors influencing the efficiency of the operation of timber tractors with semi-trailers have been identified. A promising design of a fifth wheel coupling with a spring shock absorber for timber tractors with semi-trailers that haul timber in difficult road conditions is proposed. A mathematical model of the movement along a logging road of a logging tractor with a semi-trailer equipped with a fifth wheel coupling with a spring shock absorber has been developed. Based on the developed computer program, a preliminary asses

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Wideberg, J., and E. Dahlberg. "Effect of the fifth-wheel placement on the stability of articulated vehicles." International Journal of Heavy Vehicle Systems 20, no. 2 (2013): 144. http://dx.doi.org/10.1504/ijhvs.2013.053009.

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Siew, Nyet Moi, and Jamilah Ahmad. "THE EFFECTS OF SOCIOSCIENTIFIC ISSUES APPROACH WITH THINKING WHEEL MAPS ON ENTREPRENEURIAL SCIENCE THINKING AMONG FIFTH GRADERS." Journal of Baltic Science Education 22, no. 1 (2023): 100–112. http://dx.doi.org/10.33225/jbse/23.22.100.

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This research was conducted to examine the effects of the socioscientific issue approach (SSI) with thinking wheel map (TM) on entrepreneurial science thinking (EST) and the constructs of Observation, New Ideas, Innovation, Creativity, and Value. A teaching and learning (TL) module was developed to guide teachers in implementing the infusion of SSI with TM TL approach on EST among fifth graders. Quasi-experimental quantitative research was conducted on 345 fifth graders in urban primary schools in Malaysia. A total of three TL groups were assigned randomly; namely, i) SSI-TM approach (n=115),

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Posmetev, Valeriy, Vadim Nikonov, and Aleksandr Avdyuhin. "ASSESSMENT OF THE RELEVANCE OF USE IN THE CONSTRUCTION OF A FOREST TRACTOR WITH A SEMI-TRAILER OF A RECUPERATIVE PNEUMATIC HYDRAULIC SADDLE DEVICE." Voronezh Scientific-Technical Bulletin 3, no. 3 (2022): 76–94. http://dx.doi.org/10.34220/2311-8873-2022-76-94.

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The main advantages of using timber tractors with semitrailers in comparison with single timber trucks and timber trucks with trailers are listed. The analysis of the results of scientific works of foreign authors engaged in increasing the efficiency of timber haulers with semi-trailers in the process of hauling timber is carried out. The existing conditions for the transportation of timber in the Russian Federation by timber haulers with semitrailers are considered. Described are the negative consequences that are manifested in the process of movement on forest roads, limiting the efficiency

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Xue, Huan, Chang Guo, Xiaojian Peng, Saiqing Xu, Kaixian Li, and Jianwen Li. "Collaborative Optimization on Both Weight and Fatigue Life of Fifth Wheel Based on Hybrid Random Forest with Improved BP Algorithm." Applied Sciences 15, no. 7 (2025): 4006. https://doi.org/10.3390/app15074006.

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The fifth wheel of the semi-trailer tractor is a key component connecting the tractor and the semi-trailer. During operation, the fifth wheel experiences frequent irregular and repetitive loading conditions. This leads to a decline in its durability and fatigue life, which can significantly impact the efficiency of cargo transport. The lightweight design enhances both the transport efficiency and fuel economy of the semi-trailer tractor. In this research, to achieve weight reduction while maintaining the wear-resistant failure protection performance in semi-trailer tractors, we selected a new

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Miralbes, R., J. Abad, and D. Valladares. "Simulation of Suspensions, Torsion Bars, and Fifth Wheel for Semitrailers Using Finite Elements." Advances in Mechanical Engineering 5 (January 2013): 548760. http://dx.doi.org/10.1155/2013/548760.

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Zhang, Qing, Shuo Wei, and Youming Chen. "Failure analysis of the fifth wheel couplings utilized in heavy semi-trailer tractors." Engineering Failure Analysis 109 (January 2020): 104352. http://dx.doi.org/10.1016/j.engfailanal.2019.104352.

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