Academic literature on the topic 'Forest road loading'

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Journal articles on the topic "Forest road loading"

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Trzciński, Grzegorz, Waldemar Sieniawski, and Tadeusz Moskalik. "Effects of Timber Loads on Gross Vehicle Weight." Folia Forestalia Polonica, Series A - Forestry 55(4) (December 1, 2013): 159–67. https://doi.org/10.2478/ffp-2013-0017.

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Forest roads are characterized by low traffic, but heavy timber haulage trucks have a significant influence on road conditions and usually exceed the limit of 80–100 kN per axle. The excessive weight of the trucks degrades the road surface and the forest environment. This article presents the results of a study of timber transport loads from their places of acquirement (forest districts) to the recipient (a large sawmill). The analysis includes the parameters of the timber transport vehicles and focuses especially on the gross vehicle weight (GVW), the total weight of empty truck and tra
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Ševelová, Lenka, Aleš Florian, and Petr Hrůza. "Using Resilient Modulus to Determine the Subgrade Suitability for Forest Road Construction." Forests 11, no. 11 (2020): 1208. http://dx.doi.org/10.3390/f11111208.

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Forest roads are often constructed in environments with low bearing capacity of the subgrade. The subgrade then has an effect on their service life and damage. According to the methodology of the American Association of State Higway and Transportation Officiales AASHTO, the design of pavement is divided into three levels according to the intensity of the traffic load. For pavements with the highest load intensity, preparing the resilient modulus from a cyclic triaxial test is required. For other traffic load classes, including forest roads, the methodology allows the use of the estimate of res
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Rukomojnikov, Pavlovich. "Structuring of loading points and main skid road in conditions of existing road network in forest compartment." Istrazivanja i projektovanja za privredu 13, no. 3 (2015): 167–74. http://dx.doi.org/10.5937/jaes13-8866.

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Ziółkowski, Andrzej, Paweł Fuć, Piotr Lijewski, Aleks Jagielski, Maciej Bednarek, and Władysław Kusiak. "Analysis of Exhaust Emissions from Heavy-Duty Vehicles on Different Applications." Energies 15, no. 21 (2022): 7886. http://dx.doi.org/10.3390/en15217886.

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Emissions from the road transport sector are a major contributor to the climate change. Commonly used heavy vehicles powered by diesel engines emit toxic and harmful compounds that adversely affect the environment. For this reason, increasingly newer Euro emission standards are being introduced. Therefore, the emission performance of heavy-duty vehicles used in the transportation processes of diverse loads was investigated. The first research object was a set of vehicles equipped with a crane used for loading and unloading timber. The measurements were carried out in a specially designed resea
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Rodgers, M., A. Kielty, and M. G. Healy. "Performance of Granitic, Shale, and Limestone Forest Road Aggregates Subjected to Repeated Loading." Journal of Transportation Engineering 140, no. 4 (2014): 04014002. http://dx.doi.org/10.1061/(asce)te.1943-5436.0000654.

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Jujukin, Nikolai, and Leonid Kondratev. "INCREASING THE TRACTIVE EFFORT OF FOREST WINCHES DURING LOADING AND UNLOADING OPERATIONS." Voronezh Scientific-Technical Bulletin 4, no. 4 (2021): 84–88. http://dx.doi.org/10.34220/2311-8873-2021-4-4-84-88.

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The article analyzes the operation of various friction devices in order to select the most appropriate design for use on winches on a road train when performing loading and unloading operations. International experience in the operation of forest winches has shown that the most commonly used winches are disk, cone, pad-pneumatic friction clutches and external belt types. Due to the increase in the length of the transmitted torque and the reliability of the couplings, it is possible to significantly increase the pulling forces of winches without significantly changing the designs of other nodes
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Guimarães, Pompeu Paes, Julio Eduardo Arce, Eduardo Da Silva Lopes, Nilton Cesar Fiedler, Renato César Gonçalves Robert, and Fernando Seixas. "ANALYSIS OF FUEL CONSUMPTION SENSITIVITY IN FORESTRY ROAD TRANSPORT." FLORESTA 49, no. 2 (2019): 155. http://dx.doi.org/10.5380/rf.v49i2.49137.

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The objective of this work was to analyze how the variation of traveled distance, operational speed, journey time and net cargo transported influence the fuel consumption of vehicles in forest road transport. The data were collected in this operation, covering the area between the regions of Campo do Tenente (forest unit) and Piên (industrial unit), in the state of Paraná. We analyzed the partial elements, loaded trip and empty trip, as well as the total transport cycle (loading, unloading and travel). Using the same mechanical tractor, two vehicular compositions were studied, an articulated v
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Florian, Aleš, Lenka Ševelová, Kateřina Žáková, and Jaroslav Žák. "An Updated Cyclic CBR Test with Realistic Stress Values under the Plunger for Resilient Modulus Calculation." Forests 14, no. 12 (2023): 2425. http://dx.doi.org/10.3390/f14122425.

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The design and assessment of forest and rural road pavements made from unbound natural and recycled materials require the careful determination of their physical-mechanical properties. The fundamental parameter for characterizing the soil material property is considered to be the resilient modulus Mr. The generally accepted alternative solution for its calculation is the cyclic CBR test, which uses standard CBR testing equipment. To perform tests on intact specimens and under stress conditions corresponding to expected states of stress in a pavement structure, an updated cyclic CBR test is pro
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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 (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
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А.Р., Бирман, Зубова О.В. та Угрюмов С.А. "Разработка стенда для определения потребной толщины многослойных дорожных одежд лесных дорог". Гидросфера. Опасные процессы и явления 1, № 6 (2024): 76–82. http://dx.doi.org/10.34753/hs.2024.6.1.76.

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Основными механическими характеристиками, определяющими эксплуатационные показатели лесной дороги, являются модуль деформации, характеризующий жесткость грунта в основании и его сопротивляемость деформации, а также модуль упругости, характеризующий как деформационные, так и прочностные свойства грунтов. Одним из главных параметров, определяющих величины указанных модулей, является величина деформации грунта, передаваемая через толщу дорожной одежды. Применяемые в настоящее время методики расчета нежестких дорожных одежд, как аналитические, так и экспериментальные, являются достаточно сложными
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Book chapters on the topic "Forest road loading"

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Fomin, Oleksij, Gregori Boyko, Pavlo Prokopenko, Mariia Miroshnykova, and Andriy Klymash. "Study of safety indicators and technical condition of rolling stock by mobile systems." In ASSESSMENT OF TECHNICAL CONDITION: MEANS OF MEASUREMENT, SAFETY, RISKS. TECHNOLOGY CENTER PC, 2024. https://doi.org/10.15587/978-617-8360-05-4.ch2.

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The organization of the movement of freight trains in Ukraine is an important factor in the integration of the country's railway transport into the European system. Currently, a situation has arisen that requires a significant renewal of the freight car park with modern cars to meet the requirements of freight transportation. Also, a significant drawback of railway transport of Ukraine is the limitation of the speed of trains, which include freight cars with a reduced container in an empty state, therefore, at the moment, the issue of improving the methodological and software and instrumental
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Perrault Frederique D., Aubin Carl-Eric, Wang Xiaoyu, and Schwend Richard M. "Biomechanical Analysis of Forces Sustained by Iliac Screws in Spinal Instrumentation for Deformity Treatment: Preliminary Results." In Studies in Health Technology and Informatics. IOS Press, 2012. https://doi.org/10.3233/978-1-61499-067-3-307.

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Iliac screws used in long instrumentation for deformity treatment are subject to large forces, which may sometimes lead to fixation failures (intra- and postoperatively). The objective of this study was to analyze the biomechanics of iliac screw fixations. The study was based on a patient-specific simulation of a neuromuscular scoliosis case with a long instrumentation to the pelvis. A multi body flexible model was created using a preoperative 3D reconstructed spine and pelvis. The side bending radiographs were used to personalize the mechanical properties. The instrumentation construct was mo
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Wang Xiaoyu, Aubin Carl-Eric, Larson A. Noelle, Labelle Hubert, and Parent Stefan. "Biomechanical analysis of pedicle screw density in spinal instrumentation for scoliosis treatment: first results." In Studies in Health Technology and Informatics. IOS Press, 2012. https://doi.org/10.3233/978-1-61499-067-3-303.

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Clinical studies reveal remarkable variation in screw patterns, or screw density in spinal instrumentation. Screw density may have a great impact on blood loss, operative time, radiation, risk of screw malposition, and cost. Thus, there is a need to understanding of the biomechanical effects of screw density so as to minimize the number of pedicle screws while ensuring safe and effective instrumentation. The objective of this study was to compare the deformity correction effects and bone-screw loadings of different pedicle screw densities in spinal instrumentation for scoliosis treatment. Spin
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Conference papers on the topic "Forest road loading"

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Arumugam, Paramasivam, Gopikannan Nagarajan, Mahendra N, and Pandurangan Muthu Kumar. "Study on Contribution of Bogie Suspension Seating Configurations & V-Rod Forces on Life of Heavy Duty Bogie Rear Axle Casing – Analysis Using Road Simulator." In Symposium on International Automotive Technology. SAE International, 2024. http://dx.doi.org/10.4271/2024-26-0362.

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<div class="section abstract"><div class="htmlview paragraph">The Heavy Duty live rear axles in commercial vehicle helps to transmit the drive to the rear wheels and also carries vehicle load. The rear axle along with wheel assembly consists of axle casing, differential unit, half shafts, wheel hub, brake drum, brake chamber and wheels. It is one of the major safety critical element in any commercial vehicle. Based on the suspension type, rear axle housing also carries V rod & radius rod mountings & Spring Seat /Wear pad / Rubber Bolster (in case of bogie suspension
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Stempniewski, Lena, and Ulrike Kuhlmann. "Fatigue behaviour of cracked concrete decks under cyclic shear loading." In IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures. International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/prague.2022.0507.

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<p>In large steel-concrete composite road bridges cracking occurs in the concrete deck due to tension resulting from negative bending moments at the support area. Simultaneously, high wheel loads from the traffic act as cyclic shear loading on the concrete. As a result, tension forces coming from the global load-carrying effect need to be superimposed with local vertical forces due to the wheel loads acting as cyclic shear loading. In this paper, the results of experimental investigations regarding the fatigue strength of the cracked concrete deck in tension are discussed. Furthermore, t
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Rodrigues, L. P., R. C. Silva, and A. B. S. Oliveira. "Multibody Dynamic Simulation of a Double ‘A’ Suspension Focusing on the Lower Control Arm Fatigue Life Analysis." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71779.

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A vehicle suspension subsystem consists of springs, shock absorbers and linkages, which attach to the wheels and chassis. The interaction between vehicle suspension and road generates dynamic forces in the suspension subsystem. In fact, vehicles travel at variable speed suffering a wide spectrum of vibrations and, usually, road profiles describe the roughness of the pavement surface, which represent their elevation as a function of a distance traveled or time. Consequently, suspension subsystem undergoes complex loading history that never reaches a level sufficient to cause failure in a single
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Genet, Gwenae¨lle, Pa¨r Johannesson, David Gualandris, Jacques de Mare´, and T. Mac-Lan Nguyen-Tajan. "An Approach to Multidimensional Equivalent Fatigue Loadings." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79698.

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In the automotive industry, temporal, financial and human constraints require continuous improvements in the design process of new vehicles, by delivering relevant specifications and providing reliability and robustness in design. In order to analyze factors like behaviors of drivers and types of roads and guarantee the reliability of car components, measurements of forces from wheels are stored when the vehicle is tested on tracks and used by customers. The measurements represent the time history of multi-dimensional forces on the four wheels in the longitudinal, vertical and transversal dire
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Hurter, Warren S., Nickey Janse Van Rensburg, Daniel M. Madyira, and Gert Adriaan Oosthuizen. "Static Analysis of Advanced Composites for the Optimal Design of an Experimental Lightweight Solar Vehicle Suspension System." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-40042.

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To create an energy efficient vehicle there are a number of aspects that need to be optimized, namely; the drive train of the vehicle and energy source, aerodynamics and weight. Focusing on weight reduction, while still maintaining the desired performance and structural strength, many manufacturers are turning to advanced composites due to their superior strength to weight characteristics. Solar car racing provides a research platform that drives this innovation through technology development and efficiency. A lightweight vehicle suspension system design is being presented, together with an in
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Arathanaikotti, Prasanna, and Raghu V. Prakash. "Numerical Simulation and Occupant Injury Prediction Under Side Impact Loading Using Human Surrogate Model." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-95063.

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Abstract Side Impact, after frontal impact is one of the major causes of concern for seated occupants during road accidents. Study of injury to occupants under side impact scenarios is important to design and develop reliable and efficient safety systems that can reduce the effect during crashes. In the present work, a typical side impact scenario is modelled using finite element method and human surrogates. Aluminum plates were modelled that represent a scenario in a side impact road accident where a door may infringe into the occupant seating area. The plates were impacted at a constant velo
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Zheng, Hongyu, Yafei Xin, and Yang Yan. "Recursive Least Square Method with Multiple Forgot Factor for Mass Estimation of Heavy Commercial Vehicle." In WCX SAE World Congress Experience. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2762.

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<div class="section abstract"><div class="htmlview paragraph">Heavy commercial vehicles have large variations in load and high centroid positions, so it is particularly important to obtain timely and accurate load information during driving. If the load information can be accurately obtained and the braking force of each axle can be distributed on this basis, the braking performance and safety of the entire vehicle can be improved. Heavy commercial vehicle load information is different from passenger vehicles, so it is particularly important to study commercial vehicles engaged in
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Rone, William S., and Pinhas Ben-Tzvi. "Continuum Robotic Tail Loading Analysis for Mobile Robot Stabilization and Maneuvering." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34678.

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This paper presents the analysis of a continuum robot for use as a robotic tail. The tail is envisioned for use on-board a mobile robot to provide a means separate from the locomotion mechanism (e.g., legs or wheels) to generate external forces and moments to stabilize and/or maneuver the robot. A Cosserat rod model is used to simulate the mechanics of the tail. In these analyses, a prescribed tail configuration (for static analysis) or trajectory (for dynamic analysis) is applied, and the governing equations are used to calculate the loading at the base of the tail, which will be transmitted
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Jelínek, David, Knut Mettner, and Niculin Meng. "The role of key structural components such as bearings, expansion joints, dampers and STUs in addressing the challenges faced by railway bridges." In IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures. International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/prague.2022.1699.

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<p>In the field of bridge construction and maintenance, the demands on key structural components such as bearings, expansion joints, dampers and shock transmission units are typically considerably more demanding in the case of railway bridges than of road bridges. Loading from rail traffic is generally much higher, including not only vertical loads but also horizontal forces due to braking, acceleration and track curvature, and can give rise to stronger vibrations. Bearings must be designed to resist all such forces and accommodate required movements, expansion joints must be designed to
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Thiyagarajan, Sriram, A. Jithendhar, Ram Krishnan Singh, Raghupathi Sundaram, and Ketan Paua. "Study of Impact Forces on Wheel Rim from Pothole Impacts and Improvement of Flange Design to Eliminate Wheel Bend." In 11th SAEINDIA International Mobility Conference (SIIMC 2024). SAE International, 2024. https://doi.org/10.4271/2024-28-0262.

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<div class="section abstract"><div class="htmlview paragraph">Typically, an automotive passenger car wheel rim can withstand gradual loading contributed from the vehicle during cornering and high-speed maneuvering and as per the standard as well as customer requirements wheel has to withstand some impact forced contributed from radial and inclined loading. But in some cased wheel rim may not withstand the impact forces generated during impact on potholes and curbs with high-speed maneuvering. This Study helps to understand the impact on wheel rim and the forces acting on the rim fl
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Reports on the topic "Forest road loading"

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Rushing, John, Lulu Edwards, Haley Bell, and Margarita Ordaz. Rapid assessment tools for estimating trafficability of low volume roads. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49560.

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Rapid assessment of low-volume road surfaces remains a challenge when attempting to forecast allowable vehicle crossings. Variations in soil type, compaction effort, and moisture content of the soil can greatly affect trafficability, and predictive equations for soil deformation under vehicle loads often have reduced reliability for low-strength materials. Portable tools to characterize soil stiffness and corresponding relationships to load-induced deformation are needed. In this effort, researchers performed comparative testing of multiple rapid assessment tools as potential devices for givin
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