Journal articles: 'Car mechanics'

1

WOITOWITZ, H. J. "MESOTHELIOMA AMONG CAR MECHANICS?" Annals of Occupational Hygiene 38, no. 4 (1994): 635–38. http://dx.doi.org/10.1093/annhyg/38.4.635.

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Meding, Birchta, Lars Barregård, and Kjell Marcus. "Hand eczema in car mechanics." Contact Dermatitis 30, no. 3 (March 1994): 129–34. http://dx.doi.org/10.1111/j.1600-0536.1994.tb00692.x.

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Beving, H., G. Tornling, and P. Olsson. "Increased erythrocyte volume in car repair painters and car mechanics." Occupational and Environmental Medicine 48, no. 7 (July 1, 1991): 499–501. http://dx.doi.org/10.1136/oem.48.7.499.

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Jarvholm, B., and J. Brisman. "Asbestos associated tumours in car mechanics." Occupational and Environmental Medicine 45, no. 9 (September 1, 1988): 645–46. http://dx.doi.org/10.1136/oem.45.9.645.

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Marcus, K., B. G. Jarvholm, and S. Larsson. "Asbestos-associated lung effects in car mechanics." Scandinavian Journal of Work, Environment & Health 13, no. 3 (June 1987): 252–54. http://dx.doi.org/10.5271/sjweh.2055.

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Barregard, L. "Hand-arm vibration syndrome in Swedish car mechanics." Occupational and Environmental Medicine 60, no. 4 (April 1, 2003): 287–94. http://dx.doi.org/10.1136/oem.60.4.287.

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Mikros, Emmanuel, George Labrinidis, and Serge Pérez. "Conformational Analysis of C‐Trehaloses Using Molecular Mechanics Calculations." Journal of Carbohydrate Chemistry 22, no. 6 (January 10, 2003): 407–21. http://dx.doi.org/10.1081/car-120025327.

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Popikov, P., Vladimir Zelikov, Konstantin Yakovlev, K. Menyaylov, Mikhail Shabanov, and Mikhail Lysych. "CAR MANIPULATOR IMITATION MODEL IMPLEMENTED IN CAD ENVIRONMENT." Forestry Engineering Journal 9, no. 4 (January 13, 2020): 142–50. http://dx.doi.org/10.34220/issn.2222-7962/2019.4/16.

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The article is devoted to the problems of simulation of the working process of a truck-mounted crane using modern computer-aided design systems and applications for engineering calculations. Currently, analytical methods are mainly used to model the operation of manipulator technology, such as “manual” compilation and solution of Lagrange equations of the second order, or even simpler evaluative calculations based only on basic concepts of theoretical mechanics. However, such objects consist of many parts that are in a complex rotational motion and contact interaction with each other. If such complex systems are modeled by the indicated analytical methods, one has to introduce a number of assumptions that greatly simplify the mathematical model. The level of its adequacy is low. Also recently, numerical methods for modeling mechanisms that are implemented through programming languages by using a detailed description of the process under study are often used abroad. An alternative to these methods is the use of computer-aided design systems in which numerical methods are built-in at the core level of the program and require setting the basic geometric, dynamic and kinematic parameters of the mechanism and the environment, after which they can calculate the functioning parameters of the object under study. The process of creating a simulation model of a truck mounted crane, which is an analogue of an existing laboratory setup, has been considered. To do this, a 3D model of the manipulator in the SolidWorks CAD environment has been developed. The creation technique and the main features of the obtained simulation model have been described

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Javelaud, B., L. Vian, R. Molle, P. Allain, B. Allemand, B. André, F. Barbier, et al. "Benzene exposure in car mechanics and road tanker drivers." International Archives of Occupational and Environmental Health 71, no. 4 (May 12, 1998): 277–83. http://dx.doi.org/10.1007/s004200050281.

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Famiyeh, Samuel, Amoako Kwarteng, and Disraeli Asante-Darko. "Service quality, customer satisfaction and loyalty in automobile maintenance services." Journal of Quality in Maintenance Engineering 24, no. 3 (August 13, 2018): 262–79. http://dx.doi.org/10.1108/jqme-10-2016-0056.

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Purpose The purpose of this paper is to understand the relationship between service quality, customer satisfaction and the loyalty of car owners. The aim is to understand the relative importance of the various service quality dimensions to Ghanaian car owners as to what drive satisfaction and whether this satisfaction has implication on their loyalty. Design/methodology/approach The study used a survey of car owners and relied on partial least squares-structural equation modeling to study the relationship between service quality and its impact on customer satisfaction and loyalty. Further moderation analysis based on the number of years of dealing with the mechanic was conducted. Findings The result indicates empathy, assurance, responsiveness and tangibles have a significant positive relationship with customer satisfactions. However, the reliability of the mechanic has no significant positive relationship with the satisfaction of customers. The results also indicate that customer satisfaction has a direct positive relationship with customer loyalty. The results further indicate that empathy and reliability of the mechanic have a significant positive relationship with customer loyalty; however, the assurance, responsiveness and tangibles have no significant relationship with customer loyalty. The moderation analysis indicated no significant differences in the hypothesis tested and the length of years of customers dealing with the mechanic. Research limitations/implications There is the need for mechanics to provide caring and individual attention to car owners, it is also important for mechanics to understand that customers want their cars to be serviced by mechanics who exhibit knowledge and courtesy and also deliver service in a very responsive manner. The appearance of the workshop, equipment and directions are also very important to customers. It is, therefore, important for mechanics do their best to satisfy these customers for them to remain loyal. Practical implications The findings indicate the importance of empathy, assurance, responsive and tangibles in mechanic service delivery. It is, therefore, important for mechanics to consistently provide personal attention, attend to customers in a friendly manner, deliver cars after services, provide information to customers when extra repairs are required and should take the time to explain issues to customers. In addition, it is important for mechanics to screen and employ very courteous employees who can tell customers exactly the kind of services needed as well as communicate effectively on the risks of repairs. Prompt services also seem to be the key to the satisfaction of customers. Originality/value The work illustrates and provides some insights and builds on the literature in the area of service quality, customer satisfaction and loyalty from a developing country’s environment. This is one of the few research works investigating the issue of service quality, customer satisfaction and customer loyalty in automobile services using data from the sub-Saharan African environment.

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Darabseh, Tariq, Doaa Al-Yafeai, and Abdel-Hamid Ismail Mourad. "Energy harvesting from car suspension system: Mathematical approach for half car model." Journal of Mechanical Engineering and Sciences 15, no. 1 (March 8, 2021): 7695–714. http://dx.doi.org/10.15282/jmes.15.1.2021.07.0607.

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A significant contribution of this paper is developing a half car model with a built-in piezoelectric stack to evaluate the potential of harvesting power from the car suspension system. The regenerative car suspension system is modelled mathematically using Laplace transformation and simulated using MATLAB/Simulink. Two piezoelectric stacks are installed in series with the front and rear suspension springs to maintain the performance of the original suspension system in ride quality and comfortability. Half car model is subjected under harmonic excitation with acceleration of 0.5 g and velocity of 9.17 rad/s. The harvested voltage and power are tested in both time, and frequency domain approaches. The influence of the different parameters of the piezoelectric stack (number of stack layers and area to thickness) and car suspension (sprung and unsprung stiffness and damping coefficients) are examined. Also, the effect of road amplitude unevenness is considered. The results illustrate that the maximum generated voltage and power at the excitation frequency of 1.46 Hz are 33.51 V and 56.25 mW, respectively.

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Knapczyk, Józef, and Michał Maniowski. "Optimization of 5-rod Car Suspension for Elastokinematic and Dynamic Characteristics." Archive of Mechanical Engineering 57, no. 2 (January 1, 2010): 133–47. http://dx.doi.org/10.2478/v10180-010-0007-x.

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Optimization of 5-rod Car Suspension for Elastokinematic and Dynamic CharacteristicsThe paper presents optimization of 5-rod (5-link) suspension mechanism used in passenger cars for independent guiding of the wheels. Selected stiffness coefficients defined for five elastomeric bushings installed in joints of the suspension rods are considered as design variables. Two models with lumped parameters (i.e. elastokinematic and dynamic) of wheel-suspension-car body system are formulated to describe relationships between the design variables and the performance indexes including car active safety and ride comfort, respectively. The multi-criteria goal function is minimized using a deterministic algorithm. The suspension with optimized bushings rates fulfils desired elastokinematic criteria together with a defined dynamic criterion, describing the so-called rolling comfort. An event of car passing over short road bump is considered as dynamic conditions. The numerical example deals with an actual middle-class passenger car with 5-rod suspension at the front driven axle. Estimation of the models parameters and their verification were carried out on the basis of indoor and outdoor experiments. The proposed optimization procedure can be used to improve the suspension design or development cycle.

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Birnbaum, Howard K. "Fueling the ‘Freedom Car’." Materials Today 8, no. 2 (February 2005): 64. http://dx.doi.org/10.1016/s1369-7021(05)00718-2.

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Mantegna, Michele. "The braking car problem: A challenging and stimulating test bench for beginning mechanical engineering students." International Journal of Mechanical Engineering Education 47, no. 2 (January 29, 2018): 99–117. http://dx.doi.org/10.1177/0306419017751241.

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Introductory courses of physics should provide engineering students – especially mechanical engineering students – with a working knowledge of the laws of conservation of mechanical quantities, plus the capability of analyzing the kinematics and dynamics of simple mechanical systems (for instance, rolling wheels, which are a basic component of innumerable machines). Moreover, introductory courses of physics should teach the principle of relativity of classical mechanics which – within limits – allows to switch from an inertial reference frame to another. Experience proves that this is not always the case. The braking car problem is a challenging exercise which stimulates the ingenuity of beginning mechanical engineering students with its paradoxical nature. At the same time, the problem stress-tests their understanding of the basic tenets of mechanics and thermodynamics, preparing them for more advanced technical topics such as gears, cams, hydraulic machines, jet propellers.

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Prabaswari, Atyanti Dyah, and Bagus Wahyu Utomo. "Work Mental Load Analysis on Car Repair Mechanics in Yogyakarta." IOP Conference Series: Materials Science and Engineering 982 (December 18, 2020): 012051. http://dx.doi.org/10.1088/1757-899x/982/1/012051.

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Moen, B. E., B. E. Hollund, and S. Torp. "A descriptive study of health problems on car mechanics' hands." Occupational Medicine 45, no. 6 (1995): 318–22. http://dx.doi.org/10.1093/occmed/45.6.318.

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Torp, S., T. Riise, and B. E. Moen. "Work-Related Musculoskeletal Symptoms among Car Mechanics: A Descriptive Study." Occupational Medicine 46, no. 6 (December 1, 1996): 407–13. http://dx.doi.org/10.1093/occmed/46.6.407.

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Capus, Joseph M. "More electric car nonsense." Metal Powder Report 50, no. 6 (June 1995): 42. http://dx.doi.org/10.1016/0026-0657(95)91383-1.

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Zeng, Xiang Chao, and Jing Yan Wang. "Calculation Method of Upgrade and Side Strengthening Old Bridge Based on Applied Mechanics." Applied Mechanics and Materials 214 (November 2012): 292–95. http://dx.doi.org/10.4028/www.scientific.net/amm.214.292.

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Bridge of Car 15 levels will be upgraded to Car 20 levels, in order to meet the current heavy traffic. This article introduces reinforcement scheme, and the scheme of mechanical analysis, the reinforcement design calculation, and the corresponding conclusion. Reinforcement measures for, by simply supported a bridge deck continuous (two across connect), increase the clapboard to enhance structure integrity, stick steel to the side of the beam etc. The test is satisfactory.

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Xiong, Guang Yang, P. Hu, and Guang Wu Yang. "Study on Dynamics Mechanics of Generation for Rail Oblique Crack." Advanced Materials Research 118-120 (June 2010): 171–75. http://dx.doi.org/10.4028/www.scientific.net/amr.118-120.171.

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In order to understand the generation of rail oblique crack, based on vehicle-track coupling dynamics theory, the coupling dynamics system with vehicle, rail, sleeper and roadbed was constructed. By using new fast explicit numerical integration method, movement differential equations of system were solved, and wheel-rail forces and contact geometry relation were obtained when power car crossing curve track. Results of calculation have shown that when power car is crossing curve track, lateral forces of outer rail at all wheelsets are pointed to outer rail, longitudinal forces are pointed to forward direction of wheelsets, and their resultant forces are pointed to the second quadrant. Wheel-rail contact points of outer rail at the first and third wheelset are located within 13mm radius of railhead, but at the second and fourth wheelset they are located within 80mm radius of railhead. Degree of wheel-rail interaction at the first and third wheelset is severer than that at the second and fourth wheelset. According to direction of resultant forces and location of wheel-rail contact points, it can be learnt that greater wheel-rail force at the first and third wheelset will easily cause generation and growth of rail oblique crack when power car crossing curve track.

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Topouris, Stergios, Dragan Stamenković, Michel Olphe-Galliard, Vladimir Popović, and Marko Tirovic. "Heat Dissipation from Stationary Passenger Car Brake Discs." Strojniški vestnik – Journal of Mechanical Engineering, Volume 66, Issue 1 (December 20, 2019): 15–28. http://dx.doi.org/10.5545/sv-jme.2019.6002.

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The paper presents experimental investigation of the heat dissipation from stationary brake discs concentrated on four disc designs, a ventilated disc with radial vanes, two types of ventilated discs with curved vanes - a non-drilled and cross-drilled disc, and a solid disc. The experiments were conducted on a purpose built Thermal Spin Rig and provided repeatable and accurate temperature measurement and reliable prediction of the total, convective and radiative heat dissipation coefficients. The values obtained compare favourably with Computational Fluid Dynamics results for the ventilated disc with radial vanes and solid disc, though the differences were somewhat pronounced for the ventilated disc. The speeds of the hot air rising above the disc are under 1 m/s, hence too low to experimentally validate. However, the use of a smoke generator and suitable probe was very useful in qualitatively validating the flow patterns for all four disc designs. Convective heat transfer coefficients increase with temperature but the values are very low, typically between 3 and 5 W/m2K for the disc designs and temperature range analysed. As expected, from the four designs studied, the disc with radial vanes has highest convective heat dissipation coefficient and the solid disc the lowest, being about 30% inferior. Convective heat dissipation coefficient for the discs with curved vanes was about 20% lower than for the disc with radial vanes, with the cross drilled design showing marginal improvement at higher temperatures.

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Gibanica, Mladen, Thomas J. S. Abrahamsson, and Magnus Olsson. "Model Updating of Multiple Nominally Identical Car Components." Experimental Techniques 44, no. 4 (February 28, 2020): 391–407. http://dx.doi.org/10.1007/s40799-019-00357-5.

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H. Abdul-Rahman, H. Moria, and Mohammad Rasidi Mohammad Rasani. "Aerodynamic study of three cars in tandem using computational fluid dynamics." Journal of Mechanical Engineering and Sciences 15, no. 3 (September 19, 2021): 8228–40. http://dx.doi.org/10.15282/15.3.2021.02.0646.

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Aerodynamics of vehicles account for nearly 80% of fuel losses on the road. Today, the use of the Intelligent Transport System (ITS) allows vehicles to be guided at a distance close to each other and has been shown to help reduce the drag coefficients of the vehicles involved. In this article, the aim is to investigate the effect of distances between a three car platoons, to their drag and lift coefficients, using computational fluid dynamics. To that end, a computational fluid dynamics (CFD) simulation was first performed on a single case and platoon of two Ahmed car models using the STAR-CCM+ software, for validation with previous experimental studies. Significant drop in drag coefficients were observed on platoon models compared to a single model. Comparison between the k-w and k-e turbulence models for a two car platoon found that the k-w model more closely approximate the experimental results with errors of only 8.66% compared to 21.14% by k-e turbulence model. Further studies were undertaken to study the effects of various car gaps (0.5L, 1.0L and 1.5L; L = length of the car) to the aerodynamics of a three-car platoon using CFD simulation. Simulation results show that the lowest drag coefficient that impacts on vehicle fuel savings varies depending on the car's position. For the front car, the lowest drag coefficient (CD) can be seen for car gaps corresponding to X1 = 0.5L and X2 = 0.5L, where CD = 0.1217, while its lift coefficient (CL) was 0.0366 (X1 and X2 denoting first to second and second to third car distance respectively). For the middle car, the lowest drag coefficient occurred when X1 = 1.5L and X2 = 0.5L, which is 0.1397. The lift coefficient for this car was -0.0611. Meanwhile, for the last car, the lowest drag coefficient was observed when X1 = 0.5L and X2 = 1.5L, i.e. CD = 0.263. The lift coefficient for this car was 0.0452. In this study, the lowest drag coefficient yields the lowest lift coefficient. The study also found that for even X1 and X2 spacings, the drag coefficient increased steadily from the front to the last car, while the use of different spacings were found to decrease drag coefficient of the rear car compared to the front car and had a positive impact on platoon driving and fuel-saving.

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KASE, Kiwamu. "An Introduction of Outline of CAD/CAE/CAM/CAT (2)." Journal of the Japan Society for Precision Engineering 79, no. 3 (2013): 223–26. http://dx.doi.org/10.2493/jjspe.79.223.

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BRICKERT, CHLOÉ HUIE, and GUILLAUME MONTAGU. "Can Any Hairdresser Fix A Car?: Mechanics Seeking Agency in Automated Car Diagnostic Contexts, and How Observing Agency Can Help Designing a Car Diagnostic Tool." Ethnographic Praxis in Industry Conference Proceedings 2019, no. 1 (November 2019): 283–301. http://dx.doi.org/10.1111/1559-8918.2019.01286.

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Borchardt, John K. "Electrolytes for electric car batteries." Materials Today 7, no. 6 (June 2004): 17. http://dx.doi.org/10.1016/s1369-7021(04)00275-5.

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Jones, Norman. "When it comes to the crunch — The mechanics of car collisions." International Journal of Impact Engineering 18, no. 4 (June 1996): 459. http://dx.doi.org/10.1016/s0734-743x(96)90008-1.

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Barregård, Lars. "Short Daily Exposure to Hand-Arm Vibrations in Swedish Car Mechanics." Applied Occupational and Environmental Hygiene 18, no. 1 (January 2003): 35–40. http://dx.doi.org/10.1080/10473220301385.

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Demiyanushko, I. V., and I. A. Karpov. "Analysis and mathematical modeling of cable barrier mechanics during car impact." IOP Conference Series: Materials Science and Engineering 1159, no. 1 (June 1, 2021): 012093. http://dx.doi.org/10.1088/1757-899x/1159/1/012093.

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DAROONEH, AMIR H. "NONLIFE INSURANCE PRICING: STATISTICAL MECHANICS VIEWPOINT." International Journal of Modern Physics C 16, no. 01 (January 2005): 167–75. http://dx.doi.org/10.1142/s0129183105007005.

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We consider the insurance company as a physical system which is immersed in its environment (the financial market). The insurer company interacts with the market by exchanging the money through the payments for loss claims and receiving the premium. Here, in the equilibrium state, we obtain the premium by using the canonical ensemble theory, and compare it with the Esscher principle, the well-known formula in actuary for premium calculation. We simulate the case of car insurance for quantitative comparison.

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Huang, Caihong, Jing Zeng, and Shulin Liang. "Carbody hunting investigation of a high speed passenger car." Journal of Mechanical Science and Technology 27, no. 8 (August 2013): 2283–92. http://dx.doi.org/10.1007/s12206-013-0611-z.

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Huizinga, A. T. M. J. M., D. H. van Campen, and A. de Kraker. "Application of Hybrid Frequency Domain Substructuring for Modelling an Automotive Engine Suspension." Journal of Vibration and Acoustics 119, no. 3 (July 1, 1997): 304–10. http://dx.doi.org/10.1115/1.2889724.

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A practical application of hybrid FRF-coupling (Frequency Response Function) in the development of a passenger car is presented. First, a short review is given about FRF-coupling in general. Next, some problems are discussed which may be encountered when both analytical and experimental FRF-data is used in FRF-coupling. This is also known as hybrid modelling. The main part of this paper presents a successful application of hybrid FRF-coupling to analyze and solve an interior noise problem of a passenger car. Both analytical and experimental FRFs were used to create a hybrid dynamic model of a complete passenger car. The engine and its suspension system were modelled using finite elements, while the remainder of the car was modelled by experimentaly derived FRFs. This hybrid model was then used to compute the response of the vehicle due to the engine excitation. Measured noise transfer function were used next to compute the interior sound pressure level using forced response results of the hybrid car model. Subsequently, the hybrid model was used to analyze the problem, and to predict the effects of an alternative design of the engine suspension on interior noise. Numerical results indicated that the alternative design would have a significant positive effect on noise. This was confirmed by verification measurements on a car.

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Saidivaliev, Shukhrat, Ramazon Bozorov, and Elbek Shermatov. "Kinematic characteristics of the car movement from the top to the calculation point of the marshalling hump." E3S Web of Conferences 264 (2021): 05008. http://dx.doi.org/10.1051/e3sconf/202126405008.

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Introduce analytical acceleration formulas that are derived from the classic d'Alembert principle of theoretical mechanics for high-speed sections and sections of retarder positions; show the possibility of determining the instantaneous car speeds in each section of the marshalling hump according to the formulas of elementary physics both for high-speed sections and for sections of retarder positions; provide formulas for determining the time of movement of a car with uniformly accelerated and/or uniformly retarded motion of the car on the inclined part of the hump, as well as in areas of retarder positions. Research methods: The classic d'Alembert principle of theoretical mechanics is widely used in the paper. Main results: For the first time, the results of constructing a graphical dependence of the estimated height of the marshalling hump over the entire length of its profile are presented in the form of a decrease in the profile height of each section of the inclined part in proportion to the slope of the track. The results of constructing graphical dependences on changes in the speed and time of movement of a car along the entire length of the inclined part of the marshalling hump are fundamentally different from the existing methodology, where, for example, curves of medium (rather than instantaneous) speeds of a car are built. The proposed new methodology for calculating the kinematic characteristics of the car movement along the entire length of the hump allows an analysis of the mode of shunting car at the marshalling humps.

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Mori, Kiyokazu, Taishi Tarui, Takahisa Hasegawa, and Nobuhiro Yoshikawa. "Remote laser welding applications for car bodies." Welding International 24, no. 10 (October 2010): 758–63. http://dx.doi.org/10.1080/09507111003655283.

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Kurihara, Yuki. "Progress in Reducing Domestic Passenger Car Weight." Transactions of the Japan Society of Mechanical Engineers Series A 61, no. 583 (1995): 668–73. http://dx.doi.org/10.1299/kikaia.61.668.

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Karelina, Maria, Tatyana Balabina, and Alexey Mamaev. "Analytical determination of application point and normal reaction arm when rolling a wheel on a drum." MATEC Web of Conferences 341 (2021): 00039. http://dx.doi.org/10.1051/matecconf/202134100039.

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Evaluation of the rolling resistance of car tires is now often performed on drum stands like car tests. This necessitates the study of the mechanics of interaction between the wheel and the drum in order to determine its force and kinematic characteristics, including the values and points of application of tangential and normal forces in contact with the drum. These problems can be solved taking into account that the mechanics of elastic wheel rolling on a drum is the same as when rolling on a flat rigid support surface. In this paper, from consideration of the mechanics of interaction between an elastic wheel and a drum, using the equations of power balance and force equilibrium of the wheel, the equations for determining the point of normal reaction in contact and its arm relative to the wheel axis during its rolling along one and two drums have been derived.. These dependencies have a simple form and can be applied when considering the rolling of both a single wheel and the car as a whole on a drum stand.

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Szczotka, Marek, Szymon Tengler, and Stanislaw Wojciech. "Numerical Effectiveness of Models and Methods of Integration\newlineof the Equations of Motion of a Car." Differential Equations and Nonlinear Mechanics 2007 (2007): 1–13. http://dx.doi.org/10.1155/2007/49157.

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The paper presents models of car dynamics with varying complexity. Joint coordinates and homogenous transformations are used to model the motion of a car. Having formulated the models of the car, we discuss the influence of the complexity of the model on numerical efficiency of integrating the equations describing car dynamics. Methods with both constant and adaptive step size have been applied. The results of numerical calculations are presented and conclusions are formulated.

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Baddour, Natalie, and K. A. Morris. "SYMBOLIC EQUATIONS FOR A FULL-CAR MODEL." Transactions of the Canadian Society for Mechanical Engineering 24, no. 3-4 (September 2000): 493–514. http://dx.doi.org/10.1139/tcsme-2000-0037.

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Active suspensions provide improved performance over conventional, passive suspensions. In this paper, modelling issues for an active suspension are considered. Symbolic equations for a full car model are derived using Lagrangian mechanics. The model has ten degrees of freedom instead of the usual seven. Furthermore, many of the usual simplifying assumptions are not made a priori so that the model retains its full generality. The model is developed so that modifications to any of the assumptions might easily be made and so that the equations of motion can be easily altered to satisfy more restrictive assumptions.

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Dang, Tien Phuc, Zhengqi Gu, and Zhen Chen. "Numerical simulation of flow field around the race car in case." International Journal of Numerical Methods for Heat & Fluid Flow 25, no. 8 (November 2, 2015): 1896–911. http://dx.doi.org/10.1108/hff-04-2014-0107.

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Purpose – The purpose of this paper is to gain a better understanding of the flow field structure around the race car in two cases: stationary wheel and rotating wheel. In addition, this paper also illustrates and clarifies the influence of wheel rotation on the aerodynamic characteristics around the race car. Design/methodology/approach – The author uses steady Reynolds-Averaged Navier-Stokes (RANS) equations with the Realizable k-ε model to study model open-wheel race car. Two cases are considered, a rotating wheel and stationary wheel. Findings – The results obtained from the study are presented graphically, pressure, velocity distribution, the flow field structure, lift coefficient (Cl) and drag coefficient (Cd) for two cases and the significant influence of rotating case on flow field structure around wheel and aerodynamic characteristics of race car. The decreases in Cd and Cl values in the rotating case for the race car are 16.83 and 13.25 per cent, respectively, when compared to the stationary case. Originality/value – Understanding the flow field structures and aerodynamic characteristics around the race car in two cases by the steady RANS equations with the Realizable k-ε turbulence model.

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Wu, Wei Cheng. "The Analysis of the Static Mechanics for the Vehicle Frame." Applied Mechanics and Materials 733 (February 2015): 505–8. http://dx.doi.org/10.4028/www.scientific.net/amm.733.505.

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As an important part of the automobile assembly, automobile frame bears the complex loads from the road and loaded, and be installed car assembly as the carrier, and thus the frame strength and stiffness in the car overall played a very important role in the design. This article use Solid Works to design a frame of a truck, and focus on using the finite element analysis software ANSYS study mechanical analysis and study of the vehicle frame. Here discussed the pure bending conditions and reverse the conditions of static strength, the static stiffness analysis. The analysis showed that the frame of the stress value is less than the ultimate strength of materials to meet the design requirements, but the intensity is too large, so the economy is relatively poor, while considering the local strength of the frame. According to this characteristic of the truck frame, this paper presents a program on the frame lightweight design, the results of optimization makes the weight of frame to reduce, saving raw materials, lowering production costs, improving fuel economy .

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Kravets, V. V. "Evaluating the Dynamic Load on a High-Speed Railroad Car." International Applied Mechanics 41, no. 3 (March 2005): 324–29. http://dx.doi.org/10.1007/s10778-005-0091-7.

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Lee, Young Joon, Tae Jin Shin, and Sang Kwon Lee. "Sound quality analysis of a passenger car based on electroencephalography." Journal of Mechanical Science and Technology 27, no. 2 (February 2013): 319–25. http://dx.doi.org/10.1007/s12206-012-1248-z.

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Kamalakkannan, K., A. Elayaperumal, and Sathyaprasad Managlaramam. "Input advanced control of semi active half car heave model." Journal of Mechanical Science and Technology 27, no. 5 (May 2013): 1225–31. http://dx.doi.org/10.1007/s12206-013-0306-5.

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Gexue, Ren, Lu Qiuhai, and Zhou Zhou. "On the Cable Car Feed Support Configuration for FAST." International Astronomical Union Colloquium 182 (2001): 243–47. http://dx.doi.org/10.1017/s0252921100001056.

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AbstractThis paper introduces the cable car feed support configuration for China’s FAST project. Recent advances on the mechanics of the proposed supporting structure and the control of the Stewart platform for secondary feed stabilization are presented. Difficulties associated with the configuration are also discussed.

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Maher, John, and Scott Wilkie. "CAR Mechanics: Driving T Cells into the MUC of Cancer: Figure 1." Cancer Research 69, no. 11 (June 1, 2009): 4559–62. http://dx.doi.org/10.1158/0008-5472.can-09-0564.

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Chiarello, Felisia Angela, Benedetto Piccoli, and Andrea Tosin. "A statistical mechanics approach to macroscopic limits of car-following traffic dynamics." International Journal of Non-Linear Mechanics 137 (December 2021): 103806. http://dx.doi.org/10.1016/j.ijnonlinmec.2021.103806.

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Molina, Giuseppe, Giorgio Boero, and Paolo Smeriglio. "Resin Transfer Molding for Car Body Parts: An Integrated Approach Using CAE Methodology." Journal of Reinforced Plastics and Composites 13, no. 8 (August 1994): 681–97. http://dx.doi.org/10.1177/073168449401300802.

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Tang, Tieqiao, Haijun Huang, S. C. Wong, and Rui Jiang. "A car-following model with the anticipation effect of potential lane changing." Acta Mechanica Sinica 24, no. 4 (July 1, 2008): 399–407. http://dx.doi.org/10.1007/s10409-008-0163-0.

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Chen, Shuming, Dengfeng Wang, and Yingfeng Lei. "Automotive Interior Noise Prediction Based on Single Sound Cavity Using Statistical Energy Analysis Method." Noise & Vibration Worldwide 42, no. 11 (December 2011): 36–43. http://dx.doi.org/10.1260/0957-4565.42.11.36.

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In order to predict car interior noises at the car design and development stage, the statistical energy analysis (SEA) method was used. All the input parameters – modal density (MD), damping loss factor (DLF) and coupling loss factor (CLF) were calculated with SEA principle. Meanwhile, the sound excitation was calculated with sound power experiment data of internal combustion engine given by the engine manufacturer and sound source radiation formula. Engine mount excitation was also computed through the acceleration at initiative side of the engine mount and the transmissibility. A car virtual prototype was built to calculate a car body suspension receiving excitation from road roughness. A computational fluid dynamics (CFD) model was also built up to analyze the wind excitation on the outside surfaces. The car interior noises were predicted by the SEA model with all of the parameters and excitations. A good agreement was indicated by comparing predicted results with measured ones. The maximum relative error between prediction and measurement results is less than 3%, and the maximum absolute error is less than 2.5 dB (A). The above predicted results satisfy engineering precision requirements and as well as showing that using SEA method to predict car internal noises is feasible. The acoustic sensitivity analysis was made at the end. The car internal noise prediction method presented in the paper can be used at car design and development stage.

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Pinto, André F. B. P., S. M. O. Tavares, José M. A. César de Sá, and P. M. S. T. de Castro. "Structural analysis of a cross car beam using finite element models." International Journal of Structural Integrity 6, no. 6 (December 7, 2015): 759–74. http://dx.doi.org/10.1108/ijsi-01-2015-0004.

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Purpose – The purpose of this paper is to use PAM-CRASH, a finite element analysis solver, to assess the performance of a mass production vehicle cross car beam (CCB) under an overlap frontal crash scenario (crashworthiness). Simulation results were reviewed according to what is plausible to register regarding some critical points displacements and, moreover, to identify its stress concentrations zones. Furthermore, it was also computed the CCB modal analysis (noise, vibration and harshness (NVH) assessment) in order to examine if its natural modes are within with the original equipment manufacturer (OEM) design targets. Design/methodology/approach – The available data at the beginning of the present study consisted of the structure CAD file and performance requirements stated by the OEM for NVH. No technical information was available concerning crashworthiness. Taking into account these limitations, it was decided to adapt the requirements for other mass production cars of the same category, as regards dynamic loading. A dynamic explicit code finite element analysis was performed throughout the CCB structure simulating the 120e−3 s crash event. For the modal analysis, there were some necessary modifications to the explicit finite element model in order to perform the analysis in implicit code. In addition, the car body in white stiffness was assigned at the boundaries. These stiffness values are withdrawn from the points where the CCB is attached to the car body’s sheet metal components. Findings – Although the unavailability of published results for this particular CCB model prevents a comparison of the present results, the trends and order of magnitude of the crash simulation results are within the expectations for this type of product. Concerning modal analysis, the steering column first natural frequency has a percent deviation from the design lower bound value of 5.09 percent when local body stiffness is considered and of 1.94 percent with fixed boundary conditions. The other requirement of the NVH assessment regarding a 5 Hz minimum interval between first vehicle CCB mode and the first mode of the steering column was indeed achieved with both boundary configurations. Originality/value – This study is a further confirmation of the interest of numerical modeling as a first step before actual experimental testing, saving time and money in an automotive industry that has seen an enormous increase of the demand for new car models in the last decade.

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Journal articles on the topic 'Car mechanics'

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