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Literatura académica sobre el tema "Truck components"

Autor: Grafiati

Publicado: 2 de julio de 2021

Última modificación: 10 de febrero de 2022

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Artículos de revistas sobre el tema "Truck components"

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Pan, Shu Hua y Yu Dong Chen. "Modal Stiffness Contributions of Components to Full Truck". Advanced Materials Research 199-200 (febrero de 2011): 1185–91. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.1185.

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In recent years, three optimal methods, size, shape and topological optimization, have been widely applied to the automotive component design and significant success have been achieved. However, most of the optimizations are limited to deal with the individual component of the truck. Because there exists the complex coupling relations between components under the assembly environment of the truck, it is difficult to deal with the component design by using the above three optimal method and it is necessary to develop a more effective method for solving the complex optimal problem under the assembly environment of full truck. To this end, the paper introduces the modal stiffness concept and develops the modal stiffness contributions of components to full truck which can identify which components are the key ones for controlling the modal frequencies. The present method is applied to a full truck analysis. The results obtained show that the proposed method is effective and the computation process is straightforward. The results can be directly used to improve the component design of full truck as a valuable guide.

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Fathurohman, Fathurohman y Slamet Triyono. "RCM (RELIABILITY CENTERED MAINTENANCE): THE IMPLEMENTATION IN PREVENTIVE MAINTENANCE (CASE STUDY IN AN EXPEDITION COMPANY)". EKOMABIS: Jurnal Ekonomi Manajemen Bisnis 1, n.º 02 (8 de diciembre de 2020): 197–212. http://dx.doi.org/10.37366/ekomabis.v1i02.29.

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Expedition truck is a vehicle that serves to transfer goods from one place to another. Previously maintenance policy was periodic, depending on the run distance and Run To Failure, maintain the trucks after the occurrence of component damage then system failure. Analysis in maintenance management based on system and critical components do optimize truck performance by using RCM (Reliability Centered Management) method. There are 5 systems in a truck: electrical system, power steering system, cooling machine system, coupling system, and brake system. Interaction and function of the components from each system are analyzed, evaluated the failure mode (FMEA method), and categorized the level of critical damage and adjusted the maintenance time (LTA method). The results of the RCM method for 16 component functions from the 5 systems are 5 component functions with Time Directed (TD), 6 Condition Directed (CD), 3 Failure Finding (FF), and 2 component functions by Run To Failure (RTF).

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Saka, Anthony A. y Richard A. Glassco. "Modeling Traffic Safety Benefits of Intelligent Transportation System Technologies at Truck Inspection Facilities: Microscopic Simulation". Transportation Research Record: Journal of the Transportation Research Board 1779, n.º 1 (enero de 2001): 173–81. http://dx.doi.org/10.3141/1779-23.

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A microscopic simulation model was developed to capture the traffic safety benefits of using intelligent transportation system (ITS) technologies, including weigh-in-motion scales with variable message signs, at truck inspection facilities. The development of the simulation model was motivated by prevalent safety concerns at congested truck inspection facilities nationwide. Three primary safety components (roadway, driver, and vehicle) were considered in the model. The roadway component focuses on the varying size of truck queues at inspection facilities and safety implications. The driver component captures key human factor elements and their variability, including distributions for perception-reaction time, speed, gap acceptance, headway, and braking characteristics. The vehicular component incorporates the size distribution of vehicles (trucks and nontrucks), proportion of trucks with defective braking systems, and their safety implications with respect to stopping distance. The primary objective for the model is to depict variations in traffic pattern for baseline (pre-ITS) and post-ITS situations. Measures of effectiveness used for evaluating traffic benefits of using ITS technologies include percent reduction in sudden deceleration of vehicles resulting from shock wave phenomena and percent reduction in duration of truck-queue overflow resulting from a high traffic intensity. Results from simulation runs support the hypothesis that the use of ITS technologies at truck inspection facilities significantly reduces the frequency of experiencing the high-risk traffic phenomena (e.g., hard braking and truck-queue overflow). The postulation is made that the reduction in the frequency of high-risk phenomena will translate into a decrease in the likelihood of experiencing crash-related incidents in the vicinity of truck inspection facilities.

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4

Kawasugi, Regiyan Drinin, Devina Puspita Sari y Yugowati Praharsi. "Optimalisasi Head Truck Maintenance untuk Meningkatkan Availability dan Reliability di PT. TPS". Jurnal METRIS 20, n.º 1 (14 de abril de 2021): 45–50. http://dx.doi.org/10.25170/metris.v20i1.2392.

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PT TPS Surabaya is a company engaged in terminal handling, especially containers. In carrying out operational activities to transport containers from the dock to the company's container yard, it uses eighty head truck fleets. Operational activities for transporting containers are carried out 24 hours a day so that maintenance is needed. Therefore, the operational head trucks do not experience sudden damage and disrupt operations. The malfunction of the device can occur due to damage to the components in the device. The design of the component replacement and the inspection intervals on the components is needed to avoid sudden component damage. Calculation of interval replacement and component checking is done by calculating the damage distribution followed by searching for index of fit and goodness of fit using Minitab software. The result showed that the inspection time interval of 1091 hours for the air system and 398.45 hours for the transmission system components. Besides, the replacement time interval for the component of the air system is 62 hours and the transmission system is 124 hours after inspection.

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5

Mangkona, Mangkona, Baso Cante, Hasan Basri y Adriansyah Adriansyah. "Analisa Kerusakan Relay Valve Dan Air Dryer Pada Air Charging System Unit Heavy Equipment Off Highway Truck (OHT) 777D Caterpillar". MEDIA PERSPEKTIF : Journal of Technology 12, n.º 1 (28 de junio de 2020): 33. http://dx.doi.org/10.46964/jtmp.v12i1.429.

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Air is the successor to the Caterpillar 777D Highway Truck Air System. Air is used to supply the braking system on the Caterpillar 777D Highway Truck which is then collaborated with a hydraulic system for the technical braking process. For this reason, the authors analyze the components of the 777D Caterpillar Highway Truck Air System and what damage often occurs and how to repair it. In this case the object examined is the water system component of the Caterpillar 777D Highway Truck. The method used in this research is field observation, literature study, conducting, inspection with several units that improve the schedule and scheduled repairs. According to the appropriate literature, component damage that occurs in air systems is damage to the system and wear and tear on components. The study was conducted by conducting a visual inspection and measurement, then an analysis of the assessment of the appropriate data literature was carried out. The results found damage to the maintenance component that is not really a component relay valve and air dryer on the air filling system.

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Genell, Anders, Daniel Västfjäll, Mendel Kleiner y Anders Hedlund. "Components in Evaluation of cOmplex Interior Truck Sounds". Journal of Low Frequency Noise, Vibration and Active Control 25, n.º 4 (diciembre de 2006): 227–37. http://dx.doi.org/10.1260/026309206779884865.

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Sim, Kyuhyun, Ram Vijayagopal, Namdoo Kim y Aymeric Rousseau. "Optimization of Component Sizing for a Fuel Cell-Powered Truck to Minimize Ownership Cost". Energies 12, n.º 6 (22 de marzo de 2019): 1125. http://dx.doi.org/10.3390/en12061125.

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In this study, we consider fuel cell-powered electric trucks (FCETs) as an alternative to conventional medium- and heavy-duty vehicles. FCETs use a battery combined with onboard hydrogen storage for energy storage. The additional battery provides regenerative braking and better fuel economy, but it will also increase the initial cost of the vehicle. Heavier reliance on stored hydrogen might be cheaper initially, but operational costs will be higher because hydrogen is more expensive than electricity. Achieving the right tradeoff between these power and energy choices is necessary to reduce the ownership cost of the vehicle. This paper develops an optimum component sizing algorithm for FCETs. The truck vehicle model was developed in Autonomie, a platform for modelling vehicle energy consumption and performance. The algorithm optimizes component sizes to minimize overall ownership cost, while ensuring that the FCET matches or exceeds the performance and cargo capacity of a conventional vehicle. Class 4 delivery truck and class 8 linehaul trucks are shown as examples. We estimate the ownership cost for various hydrogen costs, powertrain components, ownership periods, and annual vehicle miles travelled.

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8

Royne, Marla B., Carol C. Beinstock y Tracy Anna Cosenza. "Key advertising components and media channels for recruiting long haul drivers". Journal of Transportation Management 24, n.º 2 (1 de enero de 2014): 31–44. http://dx.doi.org/10.22237/jotm/1388534580.

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This research examines how trucking companies can develop effective advertising media and messages for reaching and recruiting qualified long distance long distance truck drivers. Long distance truck driver candidates seem most interested in competitive pay, paid vacation, a weekly payment schedule (along with direct deposit), assigned equipment, 24/7 dispatch, a large volume of hub group freight, and flexible home time. To reach this audience and its needs, we suggest advertisements emphasizing these benefits be placed on the Internet and social media sites, as well as in selected professional magazines frequented by truck drivers searching for jobs.

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9

Nowak, Andrzej S. "Load model for bridge design code". Canadian Journal of Civil Engineering 21, n.º 1 (1 de febrero de 1994): 36–49. http://dx.doi.org/10.1139/l94-004.

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The paper deals with the development of load model for the Ontario Highway Bridge Design Code. Three components of dead load are considered: weight of factory-made elements, weight of cast-in-place concrete, and bituminous surface (asphalt). The live load model is based on the truck survey data. The maximum live load moments and shears are calculated for one-lane and two-lane bridges. For spans up to about 40 m, one truck per lane governs; for longer spans, two trucks following behind the other provide the largest live load effect. For two lanes, two fully correlated trucks govern. The dynamic load is modeled on the basis of simulations. The results of calculations indicate that dynamic load depends not only on the span but also on road surface roughness and vehicle dynamics. Load combination including dead load, live load, dynamic load, wind, and earthquake is modeled using Turkstra's rule. The maximum effect is determined as a sum of the extreme value of one load component plus the average values of other simultaneous load components. The developed load models can be used in the calculation of load and resistance factors for the design and evaluation code. Key words: bridge, dead load, live load, dynamic load, load combinations.

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10

Mao, Kun Li. "Modal Analysis of Concrete Pump Truck Boom". Advanced Materials Research 889-890 (febrero de 2014): 148–51. http://dx.doi.org/10.4028/www.scientific.net/amr.889-890.148.

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Boom is one of key components of concrete pump trucks which can be looked as a projecting beam when unfolded at pumping mode. Under different concrete pumping modes, vibration of boom is serious for the hydraulic cylinder switching over shock, which can lead to the early damage of boom structure. In the finite element analysis software, boom of 37 meters concrete pump truck is simulated for its modal. Natural frequencies and corresponding modes are got and analyzed. To reduce vibration of concrete pump trucks, advices are presented by finite element modal analysis.

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Tesis sobre el tema "Truck components"

1

Story, Brett Alan. "Improved performance of railcar/rail truck interface components". [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1468.

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Bäckström, Erik. "Model of dynamic behavior for frame mounted truck components". Thesis, KTH, Hållfasthetslära (Inst.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-262884.

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In the truck industry, it is crustal to test components against fatigue to make sure that the trucks stand up to the high demands on durability. Today’s testing methods have some disadvantages; it is quite a time-consuming process, but more important, similar tested components cannot easily be compared due to the load spread the components are subjected to. It is therefore desirable to test the components in a standardized way. One way to do this is to use a synthetic signal which is a large number of unique truck measurements combined. The synthetic signal only contains information of the frame’s vibration and not any components. The purpose of this project was to create a model that uses the synthetic signal to describe the motion of components. Two approaches were used, the first was to base the model on previous measurements, the second one was to base the model on analytical equations. These models were experimentally tested in a 4 channel shake rig, and a silencer was the component chosen to be tested. For the model based on measurements, the load was shown to have a large spread which was hard to control due to the spread in the measurements. The second model was easier to control where the damping factor can be chosen and varied. A promising model was the analytical model using 10% damping applied to the synthetic signal, it covers most measurements without overestimate the load of the component. However, the model was only developed for the silencer acceleration in the z-direction, and it is recommended to develop it for the x-direction as well. The method used in this project could also be used to develop models for other components.
Inom lastbilsindustrin är det viktigt att prova komponenter mot utmattning för att säkerställa att produkterna håller de höga krav som ställs på tillförlitlighet. Dagens provmetoder har några svagheter, dels är det en tidsödande process. En ännu viktigare svaghet är dock att liknande komponenter som provats kan inte på ett enkelt sätt jämföras med varandra, eftersom belastningen på en komponent kan skilja sig rejält beroende på vilken fordonskonfiguration som väljs att studera. Det är därför önskvärt att prova komponenterna på ett standardiserat sätt. Detta kan göras genom att använda den syntetiska signalen, som är en kombination av ett antal unika lastbilsmätningar. Men den syntetiska signalen innehåller bara information om ramens vibrationer och inte komponenten. Syftet med det här projektet är att ta fram en modell som använder den syntetiska signalen för att beskriva en komponentens rörelse. Två angreppssätt användes, det första var att basera modellen på tidigare mätningar, det andra var att basera modellen på analytiska ekvationer. Dessa modeller var experimentellt provade i en skakrigg med fyra kanaler, och en ljuddämpare blev det valda testobjektet. Modellen baserad på mätningar resulterade i en stor spridning av last, som var svårkontrollerad till följd av spridningen från mätningarna. Modellen baserad på de analytiska ekvationerna var däremot lättare att kontrollera där dämpningen kunde väljas och varieras. En lovande modell verkar vara att använda modellen med 10% dämpning på den syntetiska signalen, den täcker in dem flesta mätningarna utan att överskatta komponentbelastningen. Modellen är dock bara utvecklad för komponentens acceleration i z-riktning och det är rekommenderat att utveckla en liknande modell för x-riktningen också. Metoden kan även användas för andra utveckla modeller för andra komponenter än ljuddämparen.

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3

Venishetty, Sai Vineeth. "Machine Learning Approach for Forecasting the Sales of Truck Components". Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-18812.

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Context: The context of this research is to forecast the sales of truck componentsusing machine learning algorithms which can help the organization in activity oftrade and business and it also plays a major role for firms in decision-making operationsin the areas corresponding to sales, production, purchasing, finance, and accounting. Objectives: This study first investigates to find the suitable machine learning algorithmsthat can be used to forecast the sales of truck components and then theexperiment is performed with the chosen algorithms to forecast the sales and to evaluatethe performances of the chosen machine learning algorithms. Methods: Firstly, a Literature review is used to find suitable machine learningalgorithms and then based on the results obtained, an experiment is performed toevaluate the performances of machine learning algorithms. Results: Results from the literature review shown that regression algorithms namely Supports Vector Machine Regression, Ridge Regression, Gradient Boosting Regression, and Random Forest Regression are suitable algorithms and results from theexperiment showed that Ridge Regression has performed well than the other machine learning algorithms for the chosen dataset. Conclusion: After the experimentation and the analysis, the Ridge regression algorithmhas been performed well when compared with the performances of the otheralgorithms and therefore, Ridge Regression is chosen as the optimal algorithm forperforming the sales forecasting of truck components for the chosen data.

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4

Bevan, Adam John. "Durability assessment of truck components and subsystems using computer-aided techniques". Thesis, Manchester Metropolitan University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443308.

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Robin, Frisk. "Distortion Analysis of Low Pressure Carburized Components : A heat treatment distortion comparison of transmission gear components for truck and automobile". Thesis, KTH, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-193539.

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During the last 10 years, low pressure carburizing and high pressure gas quenching has become more popular since it is a “new” process and researchers reports that the distortion characteristics gained from these processes is improved in relation to conventional processes. The aim of this work was to investigate the distortions gained from three different heat treatment processes on main shaft gears and crown wheels. Experiments with atmospheric carburization with oil quenching and low pressure carburization with nitrogen gas quenching or oil quenching were made and distortion characteristics gained from these processes were then measured and compared. It was found that components treaded in the relatively new LPC-HPGQ process are similar and often even better than the conventional method. The larger main shaft gear improves the most with newer method but instead gets a lower core hardness and systematic diametrical shrinkage. Some measurements on the crown wheel were also improved but others were affected negatively.

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Tahlyan, Divyakant. "Performance Evaluation of Choice Set Generation Algorithms for Modeling Truck Route Choice: Insights from Large Streams of Truck-GPS Data". Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7649.

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This thesis evaluates truck route choice set generation algorithms and derives guidance on using the algorithms for effective generation of choice sets for modeling truck route choice. Specifically, route choice sets generated from a breadth first search link elimination (BFS-LE) algorithm are evaluated against observed truck routes derived from large streams of GPS traces of a sizeable truck fleet in the Tampa Bay region of Florida. A systematic evaluation approach is presented to arrive at an appropriate combination of spatial aggregation and minimum number of trips to be observed between each origin-destination (OD) location for evaluating algorithm-generated choice sets. The evaluation is based on both the ability to generate relevant routes that are typically considered by the travelers and the generation of irrelevant (or extraneous) routes that are seldom chosen. Based on this evaluation, the thesis offers guidance on effectively using the BFS-LE approach to maximize the generation of relevant routes. It is found that carefully chosen spatial aggregation can reduce the need to generate large number of routes for each trip. Further, estimation of route choice models and their subsequent application on validation datasets revealed that the benefits of spatial aggregation might be harnessed better if irrelevant routes are eliminated from the choice sets. Lastly, a comparison of route attributes of the relevant and irrelevant routes shed light on presence of systematic differences in route characteristics of the relevant and irrelevant routes.

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7

Hedberg, Lundblad Louise y Anna Lund. "Comparison of Fatigue Life Evaluation Methods". Thesis, KTH, Hållfasthetslära, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298345.

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The aim of this thesis is to investigate a selected set of fatigue life calculation methods and evaluate if they are suitable for fatigue life estimation of truck components at Scania. Failure due to fatigue can be cause by road induced vibrations, which is an inevitable phenomenon trucks are exposed to. By estimating when and where these components will fail, they can be designed to reduce the amount of failure per vehicle. Three types of fatigue life calculation methods, namely equivalent stress methods, critical plane methods and spectral methods, have been evaluated. These are methods for calculating fatigue life in both the time domain and the frequency domain. The chosen calculation methods have been evaluated based on their sensitivity to input parameters, their accuracy on predicting fatigue life and their ability to find the critical areas where the components are most likely to fail. The methods have also been compared to a method already implemented at Scania. To evaluate the methods, two different components were used. The first component was designed to give a multiaxial stress state and the other was a real truck component where fatigue data had been collected from a shake rig test at Scania. It was found that all investigated methods were successful in finding critical areas where failure will occur. However, the resulting estimated fatigue life had a very low accuracy. To draw any conclusions about the accuracy of the fatigue life estimations, a model that better reflects the dynamics of the real truck component is needed. Therefore, the conclusion is that the chosen methods can be used for finding critical areas in a component but not to determine the absolute time to failure for the model used. However, the method already implemented at Scania was equally successful in finding the critical areas and it has a much shorter computational time than the methods in the time domain. Since it is already implemented and used, the Scania method is recommended for the purpose of finding the critical areas of a component. A sensitivity study was conducted in order to investigate the influence of a variation of material parameters on the fatigue life calculated with the different methods. This study showed that the SN-curve parameters are important for the resulting fatigue life of methods that consider the endurance limit, and, therefore, that the choice of SN-curve is important. Since the road induced vibrations in this study caused load signals where the majority of the cycles were found below the endurance limit, methods that account for the endurance limit have to be used for calculations on components experiencing similar conditions. Furthermore, it was found that the resulting stress signal from the FE-analysis using input data from the shake rig test was non-Gaussian, this makes the results from all the chosen frequency domain methods invalid. To use these methods, they need to be extended to consider non-Gaussian signals.
Syftet med detta examensarbete är att undersöka ett antal utvalda metoder för utmattningsberäkning och utvärdera om dessa är lämpliga för att uppskatta livslängden på lastbilskomponenter hos Scania. Haveri på grund av utmattning kan orsakas av vibrationer från vägen, ett fenomen som påverkar komponenter på lastbilar. Genom att uppskatta när och var dessa komponenter går sönder kan de konstrueras för att minska antalet haverier. Olika typer av metoder för utmattningsberäkning i både tidsdomänen och frekvensdomänen har utvärderats. Dessa inkluderade ekvivalenta spännings-metoder, kritiska plan-metoder samt spektrala metoder. Metoderna har utvärderats med avseende på deras känslighet för variation i materialparametrar, hur den beräknade livslängden skiljer sig mot verkliga tester och hur bra de är på att hitta de kritiska områdena på en lastbilskomponent. Detta har även jämförts mot en beräkningsmetod som redan används på Scania. Två olika komponenter användes för att utvärdera metoderna. En av komponenterna var designad för att ge ett multiaxiellt spänningstillstånd och en var en riktig lastbilskomponent med data uppmätt från ett skaktest på Scania. Alla studerade metoder fann de kritiska områdena där utmattningsbrott riskerar att uppstå. Däremot visade det sig att beräkningsmetoderna inte lyckades estimera livslängder som låg i närheten av de som uppmättes under testet i skakriggen. En mer verklighetsnära modell vilken bättre motsvarar de dynamiska egenskaperna av systemet behövs för att kunna dra en slutsats om modellernas träffsäkerhet gällande estimeringen av livslängden. För ändamålet att hitta kritiska områden rekommenderas metoden som redan används hos Scania, eftersom denna var lika framgångsrik att hitta dessa, men gjorde det på en avsevärt kortare tid. Därutöver identifierades att spänningssignalen från FE-analysen, där indata från skakriggen användes, inte var gaussisk. Detta innebär att signalen inte uppfyller kraven för de spektrala metoderna och därmed att resultaten från beräkningarna på lastbilskomponenten inte går att använda för att dra några slutsatser. Känslighetsanalysen visade att de metoder som tar hänsyn till utmattningsgränsen är känsliga för ändringar i SN-parametrar. Detta beror på att många cykler, för det studerade lastfallet, låg nära utmattningsgränsen och att antalet cykler som ingick i beräkningarna därför påverkades stort av SN-parametrarna. Eftersom de vibrationer som uppstår då lastbilar framförs på vägar kan ge upphov till många cykler med amplituder nära utmattningsgränsen bör endast metoder som kan ta hänsyn till utmattningsgränsen användas vid dessa fall.

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Allen, P. "Models for the Dynamic Simulation of Tank Track Components". Thesis, Cranfield University, 2006. http://hdl.handle.net/1826/1106.

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This project has been sponsored by QinetiQ Limited (QinetiQ); whose aim it is to model the dynamics of a prototype high-speed military tracked vehicle. Specifically their objective is to describe the mechanism by which force inputs are transmitted from the ground to the vehicle’s hull. Many track running gear components are steel and can be modelled as simple lumped masses or as linear springs without internal damping. These present no difficulty to the modeller. However tracked vehicle running gear also has nonlinear components that require more detailed descriptions. Models for two rubber components, the road wheel tyre and track link bush, and a model for the suspensions rotary damper, are developed here. These three components all have highly nonlinear dynamic responses. Rubber component nonlinearities are caused by the materials nonlinear elastic and viscoelastic characteristics. Stiffness is amplitude dependent and the material exhibits a significant amount of internal damping, which is predominantly Coulombic in nature but also relaxes overtime. In this work, a novel method for measuring the elastic and viscoelastic response of Carbon Black Filled Natural Rubber components has been devised and a ‘general purpose’ mathematical model developed that describes the materials response and is suited to use in multibody dynamic analysis software. The vehicle’s suspension rotary damper model describes three viscous flow regimes (laminar, turbulent and pressure relief), as a continuous curved response that relates angular velocity to damping torque. Hysteresis due to the compression of entrapped gas, compliance of the dampers structure and compression of damper oil is described by a single non-parametric equation. Friction is considered negligible and is omitted from the model. All components are modelled using MSC.ADAMS TM multibody dynamic analysis software. The models are shown to be easily implemented and computationally robust. QinetiQ’s requirement for ‘practical’ track running gear component models has been met.

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Allen, Paul. "Models for the dynamic simulation of tank track components". Thesis, Cranfield University, 2006. http://dspace.lib.cranfield.ac.uk/handle/1826/1106.

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This project has been sponsored by QinetiQ Limited (QinetiQ); whose aim it is to model the dynamics of a prototype high-speed military tracked vehicle. Specifically their objective is to describe the mechanism by which force inputs are transmitted from the ground to the vehicle’s hull. Many track running gear components are steel and can be modelled as simple lumped masses or as linear springs without internal damping. These present no difficulty to the modeller. However tracked vehicle running gear also has nonlinear components that require more detailed descriptions. Models for two rubber components, the road wheel tyre and track link bush, and a model for the suspensions rotary damper, are developed here. These three components all have highly nonlinear dynamic responses. Rubber component nonlinearities are caused by the materials nonlinear elastic and viscoelastic characteristics. Stiffness is amplitude dependent and the material exhibits a significant amount of internal damping, which is predominantly Coulombic in nature but also relaxes overtime. In this work, a novel method for measuring the elastic and viscoelastic response of Carbon Black Filled Natural Rubber components has been devised and a ‘general purpose’ mathematical model developed that describes the materials response and is suited to use in multibody dynamic analysis software. The vehicle’s suspension rotary damper model describes three viscous flow regimes (laminar, turbulent and pressure relief), as a continuous curved response that relates angular velocity to damping torque. Hysteresis due to the compression of entrapped gas, compliance of the dampers structure and compression of damper oil is described by a single non-parametric equation. Friction is considered negligible and is omitted from the model. All components are modelled using MSC.ADAMS TM multibody dynamic analysis software. The models are shown to be easily implemented and computationally robust. QinetiQ’s requirement for ‘practical’ track running gear component models has been met.

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10

Naude, Francois Paulus. "Development of a methodology for calculating stresses in track components". Diss., Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-07282005-090746.

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Más fuentes

Libros sobre el tema "Truck components"

1

United States International Trade Commission. In the matter of certain truck bed ramps and components thereof: Investigation no. 337-TA-485. Washington, DC: U.S. International Trade Commission, 2004.

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Heavy duty drivetrains: The system and component application. Warrendale, PA: Society of Automotive Engineers, 1991.

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3

The electric vehicle conversion handbook: How to convert cars, trucks, motorcycles, and bicycles : includes EV components, kits, and project vehicles. New York: HPBooks, 2011.

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4

AWS D8 Committee on Automotive Welding., American Welding Society. Technical Activities Committee. y American National Standards Institute, eds. Specification for automotive and light truck components weld quality--: Aluminum arc welding. Miami, Fla: American Welding Society, 2000.

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5

Britain, Great. Cubicle Curtain Track (Health Technical Memoranda: Building Components: 66). Stationery Office Books, 1989.

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6

YOUNG, KENNETH A. Mitchell: 1985 Electrical Component Locator/ Imported Cars & Trucks. MITCHELL INFORMATION SERVICES, 1986.

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Electrical Component Locator: 2003 Domestic Vehicles (Electrical Component Locator Domestic Cars (Annual Supplement)). Mitchell Intl, 2003.

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(Firm), Mitchell1, ed. Electrical component locator: 2003 domestic vehicles. San Diego, Calif: Mitchell1, 2003.

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1992 Mitchell Electrical Component Locator: Import Cars, Light Trucks & Vans (Electrical Component Locator Import Cars, Light Trucks and Vans Annual Supplement). Mitchell Intl, 1993.

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A, Moucessian y Transportation Development Centre (Canada), eds. State-of-the-art track technology and its application to improve track component performance and track maintenance management. Kingston, Ont: Canadian Institute of Guided Ground Transport, Queen's University, 1987.

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Más fuentes

Capítulos de libros sobre el tema "Truck components"

1

Scott, Kendall. "Components, Deployment, and Higher-Level Modeling". En Fast Track UML 2.0, 121–32. Berkeley, CA: Apress, 2004. http://dx.doi.org/10.1007/978-1-4302-0720-7_9.

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Tzanakakis, Konstantinos. "The Deterioration of the Track Components". En Springer Tracts on Transportation and Traffic, 121–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36051-0_19.

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Andersson, Clas y Johan Oscarsson. "Dynamic Train/Track Interaction Including State–Dependent Track Properties and Flexible Vehicle Components". En The Dynamics of Vehicles on Roads and on Tracks, 47–58. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003210924-4.

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Cardona, Rene. "Logical Components of a VXLAN BGP EVPN Spine-and-Leaf Architecture". En The Fast-Track Guide to VXLAN BGP EVPN Fabrics, 27–65. Berkeley, CA: Apress, 2021. http://dx.doi.org/10.1007/978-1-4842-6930-5_2.

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5

Heineck, James T., Stephen M. Walker y Dale Satran. "The Measurement of Wake and Gap Flows of the Generic Conventional Truck Model (GCM) using Three-Component PIV". En The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains, 173–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-44419-0_19.

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Alexandrov, A., A. Frolov y J. Massion. "Principal Component Analysis of Axial Synergies During Upper Trunk Forward Bending in Human". En Multisensory Control of Posture, 95–101. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1931-7_11.

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Abdullah, Nagoor Meera, Wahidah Tumijan, Norlizah Abdul Hamid, Vincent Parnabas, Mohamad Rahizam Abdul Rahim, Sarimah Ismail y Mohamad Nizam Mohamad Shapie. "The Level of Physiological Profile on Disability Track and Field Athletes on Selected Fitness Components". En Proceedings of the International Colloquium on Sports Science, Exercise, Engineering and Technology 2014 (ICoSSEET 2014), 535–45. Singapore: Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-287-107-7_54.

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Mazurek, Przemysław. "Estimation of State–Space Spatial Component for Cuboid Track–Before–Detect Motion Capture Systems". En Computer Vision and Graphics, 451–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02345-3_44.

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Corbeels, Patrick, P. Van de Ponseele, M. Choukri, R. Sinnig y W. Kerres. "Predicting pass-by noise levels for trucks based on component test bench measurements – by using virtual assembly techniques". En Proceedings, 293–311. Wiesbaden: Springer Fachmedien Wiesbaden, 2019. http://dx.doi.org/10.1007/978-3-658-20251-4_17.

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"Probabilistic properties of components of the machinery system exploitation process". En Shovel-Truck Systems, 47–54. CRC Press, 2008. http://dx.doi.org/10.1201/9780203881248-10.

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Actas de conferencias sobre el tema "Truck components"

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Ziech, Jim, Glen Peterson, Prasad Mangalaramanan y Jim Ridge. "Design Optimization Method for CAD Structural Components". En International Truck & Bus Meeting & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-3427.

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Ehl, Oliver, Paul Simms, Klaus Störzel y Thomas Bruder. "Reliable Pre-Design of Commercial Vehicle Rotating Suspension Components". En International Truck & Bus Meeting & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-3426.

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McGeen, Daniel T. "Achieving More Efficient Finite Element Analyses of Cast Suspension Components". En International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1993. http://dx.doi.org/10.4271/933042.

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4

Fontdecaba I Buj, Josep. "Integral Suspension System for Motor Vehicles Based on Passive Components". En International Truck & Bus Meeting & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2002. http://dx.doi.org/10.4271/2002-01-3105.

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Shih, S., T. Kolodziej, R. Edara, R. Ledesma y R. Somnay. "Some Considerations in the Test Bogey Development for Automotive Components". En International Truck & Bus Meeting & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2002. http://dx.doi.org/10.4271/2002-01-3126.

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Schwab, Harry L. "The Development of Vibration Environments for Accelerated Testing of Automotive Components". En International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/942278.

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Schumacher, Clifford A. "Reinforced Composites for Piston Engine Components". En SAE International Truck and Bus Meeting and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1989. http://dx.doi.org/10.4271/892495.

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Schwab, H. L. y S. C. Konanur. "A Comparison of Time Domain and Frequency Domain Test Methods for Automotive Components". En International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/942279.

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9

Gautam, Mridul, Brian Kelly, Deepak Gupta, Nigel Clark, Richard Atkinson, Laila El-Gazzar y Donald W. Lyons. "Sampling Strategies for Characterization of the Reactive Components of Heavy Duty Diesel Exhaust Emissions". En International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/942262.

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10

Tan, Gangfeng, Xuexun Guo, Bin Wang y Jun Yan. "Heavy Truck Driveline Components Modeling and Thermal Analyzing". En SAE 2009 Commercial Vehicle Engineering Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2009. http://dx.doi.org/10.4271/2009-01-2905.

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Informes sobre el tema "Truck components"

1

Makiewicz, Kurt, Theodore Yurek, Brian Farrell, Aaron Youril y Gerard Michael Ludtka. Investigation of Thermo-Magnetic Processing in Application to Heavy Duty Truck Suspension Components. Office of Scientific and Technical Information (OSTI), abril de 2016. http://dx.doi.org/10.2172/1257906.

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Ludtka, Gerard Michael, Gail Mackiewicz Ludtka, John B. Wilgen, Roger A. Kisner y Aquil Ahmad. Use of High Magnetic Fields to Improve Material Properties for Hydraulics, Automotive and Truck Components. Office of Scientific and Technical Information (OSTI), agosto de 2010. http://dx.doi.org/10.2172/984782.

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Elsner, N. B., J. C. Bass, S. Ghamaty, D. Krommenhoek, A. Kushch, D. Snowden y S. Marchetti. Clean Diesel Engine Component Improvement Program Diesel Truck Thermoelectric Generator. Office of Scientific and Technical Information (OSTI), marzo de 2005. http://dx.doi.org/10.2172/1048104.

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Golovko, Khrystyna. TRAVEL REPORT BY ALEKSANDER JANTA-POŁCZYNSKI «INTO THE USSR» (1932): FROG PERSPECTIVE. Ivan Franko National University of Lviv, marzo de 2021. http://dx.doi.org/10.30970/vjo.2021.50.11091.

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Resumen

The article analyzes a series of materials by Aleksander Janta-Polczynski «Into the USSR» from Soviet Russia during the in 1932, published on «Wiadomości Literackiе». The purpose of this article is explain the uniqueness of the reporter’s style and personality. We want to emphasize the role of Janta-Polczynski as the pioneer of reportage journalism. He was the first who worked professionally in this position in the full sense of this word. Analyzed the cycle of Alexander Janta-Polczynski from Russia, we can emphasize the scale of the reporter’s trip: in 1932 the journalist made the largest journalistic trip to the USSR. Janta visited the Eastern republics, which differed from the popular Moscow and Leningrad. Also, he saw the largest construction in the USSR at this time – which it bragged about russian newspapers – Magnitogorsk and Dneprostroy. For a better understanding are given the visual examples from reportorial texts. It should be noted that for Janta the main task of the reporter is to show what is seen and recorded: only facts and personal experience in communication. This cycle can safely be called a journey and social expedition. The main task for Janta the scene where the reportage takes place is to find proper characters and convince them of the importance of their story. These are the materials of a reporter – an eyewitness, not a researcher, a report from the scene, which pushes the reader to an independent conclusion. We explore that all the Janta-Polczynski texts are inextricably linked by looking into the «middle» of the process: the diversity of what is seen allows the journalist to look for differences and similarities, compare, look at the fundamental components, track changes and distinguish them. Special attention was paid to a low-angle shot in his materials. He describes how Soviet society lives, how factories work, how the system of educating a Soviet person, goes to the movies and exhibitions, communicates with ordinary citizens. Undoubtedly, all this is successfully complemented by the factual detail and uniqueness of the author’s style.

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5

Wright, Kirsten. Collecting Plant Phenology Data In Imperiled Oregon White Oak Ecosystems: Analysis and Recommendations for Metro. Portland State University, marzo de 2020. http://dx.doi.org/10.15760/mem.64.

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Highly imperiled Oregon white oak ecosystems are a regional conservation priority of numerous organizations, including Oregon Metro, a regional government serving over one million people in the Portland area. Previously dominant systems in the Pacific Northwest, upland prairie and oak woodlands are now experiencing significant threat, with only 2% remaining in the Willamette Valley in small fragments (Hulse et al. 2002). These fragments are of high conservation value because of the rich biodiversity they support, including rare and endemic species, such as Delphinium leucophaeum (Oregon Department of Agriculture, 2020). Since 2010, Metro scientists and volunteers have collected phenology data on approximately 140 species of forbs and graminoids in regional oak prairie and woodlands. Phenology is the study of life-stage events in plants and animals, such as budbreak and senescence in flowering plants, and widely acknowledged as a sensitive indicator of environmental change (Parmesan 2007). Indeed, shifts in plant phenology have been observed over the last few decades as a result of climate change (Parmesan 2006). In oak systems, these changes have profound implications for plant community composition and diversity, as well as trophic interactions and general ecosystem function (Willis 2008). While the original intent of Metro’s phenology data-collection was to track long-term phenology trends, limitations in data collection methods have made such analysis difficult. Rather, these data are currently used to inform seasonal management decisions on Metro properties, such as when to collect seed for propagation and when to spray herbicide to control invasive species. Metro is now interested in fine-tuning their data-collection methods to better capture long-term phenology trends to guide future conservation strategies. Addressing the regional and global conservation issues of our time will require unprecedented collaboration. Phenology data collected on Metro properties is not only an important asset for Metro’s conservation plan, but holds potential to support broader research on a larger scale. As a leader in urban conservation, Metro is poised to make a meaningful scientific contribution by sharing phenology data with regional and national organizations. Data-sharing will benefit the common goal of conservation and create avenues for collaboration with other scientists and conservation practitioners (Rosemartin 2013). In order to support Metro’s ongoing conservation efforts in Oregon white oak systems, I have implemented a three-part master’s project. Part one of the project examines Metro’s previously collected phenology data, providing descriptive statistics and assessing the strengths and weaknesses of the methods by which the data were collected. Part two makes recommendations for improving future phenology data-collection methods, and includes recommendations for datasharing with regional and national organizations. Part three is a collection of scientific vouchers documenting key plant species in varying phases of phenology for Metro’s teaching herbarium. The purpose of these vouchers is to provide a visual tool for Metro staff and volunteers who rely on plant identification to carry out aspects of their job in plant conservation. Each component of this project addresses specific aspects of Metro’s conservation program, from day-to-day management concerns to long-term scientific inquiry.

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