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Journal articles on the topic 'Undercarriages'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Miková, Ľubica, František Trebuňa, and Michal Kelemen. "Concept of Locomotion Mobile Undercarriage Structure Control for the Path Tracking." Solid State Phenomena 198 (March 2013): 79–83. http://dx.doi.org/10.4028/www.scientific.net/ssp.198.79.

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The article deals with the proposal structure of undercarriages mobile robot GTR 2010 control. Functional model of the undercarriages mobile robot GTR2010 should be able to carry out active tracking of desired path for achieving a goal and get over obstacles in unstructured environments.

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2

Timashov, Kh A., N. A. Deryabina, Yu Z. Babaskin, E. G. Aftandilyants, and A. M. Pastushkov. "Increasing the life of tractor undercarriages." Metal Science and Heat Treatment 29, no. 5 (May 1987): 374–77. http://dx.doi.org/10.1007/bf00715846.

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3

Kemurdjian, Alexander. "Experience in Creating Self‐Propelled Undercarriages for Planet Rovers." Journal of Aerospace Engineering 4, no. 4 (October 1991): 317–29. http://dx.doi.org/10.1061/(asce)0893-1321(1991)4:4(317).

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4

Kuz’Min, V. A., R. S. Fedotkin, and V. A. Kryuchkov. "Artificial neural network applying for justification of tractors undercarriages parameters." Agricultural machinery and technologies, no. 4 (August 20, 2017): 24–30. http://dx.doi.org/10.22314/2073-7599-2017-4-24-30.

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5

Сливинский, Евгений, Evgeniy Slivinskiy, Валентин Киселёв, and Valentin Kiselev. "DESIGN IMPROVEMENT OF DIESEL LOCOMOTIVE UNDERCARRIAGES SUPPLIED WITH JAW TRUCKS." Bulletin of Bryansk state technical university 2018, no. 2 (June 19, 2018): 82–87. http://dx.doi.org/10.12737/article_5ac49dc7a3f6c9.64463633.

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6

Popovych, Pavlo, Oksana Shevchuk, Volodymyr Dzyura, Liubov Poberezhna, Vasyl Dozorskyy, and Andrii Hrytsanchuk. "Assessment of the Influence of Corrosive Aggressive Cargo Transportation on Vehicle Reliability." International Journal of Engineering Research in Africa 38 (September 2018): 17–25. http://dx.doi.org/10.4028/www.scientific.net/jera.38.17.

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The analytical models for calculating the performance of vehicles used to transport fertilizers have been developed. The durability of undercarriages elements is estimated with consideration of kinetic equations for determining the periods of nucleation and propagation of cracks. The formulas for determining the durability of П-shaped thin-walled sections as the sum of the periods of nucleation and subcritical growth of corrosion-fatigue cracks in metal structures of vehicles, depending on the conditions of operation, are applied as well.

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7

Zhuravleva, L. A., and N. V. Tkhuan. "Reduced rutting of wide-grip sprinklers." Izvestia MGTU MAMI 1, no. 4 (2020): 38–45. http://dx.doi.org/10.31992/2074-0530-2020-46-4-38-45.

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During the process of irrigation, when moving sprinklers across the field, the wheels of the run-ning supports create a track. As the number of passes increases, so does the depth of the track. At the end of the irrigation season, it can reach 0.3-0.45 m, lead to slipping wheels and excessive wa-tering. The intensity of the process of rutting and reducing the coupling properties of the running systems of sprinkler machines is further increased in the presence of free, not absorbed water, caus-ing the formation of runoff on the track. The greatest depth of the track by the end of the season in the last undercarriages occurs due to the increase in the intensity of irrigation and the diameter of the drops of sprinklers located at the end of the pipeline. The choice of running systems should be made taking into account the characteristics of irrigated surfaces, rational ratios of span lengths, di-ameters of pipelines and sprinkler arrangement schemes. The aim of the study is to consider the im-pact of the irrigation process on the bearing properties of the soil and the formation of a track. The article presents theoretical dependences for determining the depth and width of the track for two-wheeled and three-wheeled undercarriages of wide-grip sprinkler machines. Field studies were con-ducted on “Kuban-LK1M” (Cascade) and “CASCADE” sprinkler machines. The article presents the dependence of the track depth on the number of the undercarriages with a soil bearing capacity of 110-125 kPa. The research made it possible to determine the approximate zones of application of wheel systems, depending on the bearing capacity of the soil. Analysis of the data shows that it is advisable to equip sprinklers with narrow pneumatic wheels on soils of increased strength. On soils with low bearing capacity and significant irrigation rates from 600 m3 / ha - wide-profile pneumatic tires 18-24; 23-26, 21.3-24 for “Kuban-LK1”, “Kuban-LK1M” (KASKAD), KASKAD with a pro-file width of 0.30-0.54 m, including the installation of wider tires at the end part of the machines. In addition, in conditions of low soil strength, it is possible to use tires on sprinklers with smaller profile widths than the recommended ones, but for reduced span lengths or a reduced diameter of the water pipeline.

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8

Lukashova, N. "Optimization solution of damping oscillations in undercarriages of carts of urban electric transport." Lighting Engineering and Power Engineering 1, no. 54 (2019): 9–17. http://dx.doi.org/10.33042/2079-424x-2019-1-54-9-17.

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9

Boronenko, Yury, Anna Komarova, and Yury Romen. "Influence of car pumping on the power consumption for train traction." Bulletin of scientific research results, no. 1 (March 20, 2016): 18–29. http://dx.doi.org/10.20295/2223-9987-2016-1-18-29.

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Objective: To estimate the influence of dynamic processes in the system «car – track», considering different structures of undercarriages to the resistance to the train motion and power consumption for the train traction. Methods: This paper uses mathematic simulation method. Results: A significant difference was found between the theoretical results, obtained by using simulation methods, and the results, obtained by using nominal equations, in estimation of power consumption. Practical importance: Results of the research demonstrate, that it is necessary to adjust the techniques of estimation of resistance to the train motion and corresponding calculations of expenses for train traction because of alterations of structures of modern bogies.

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10

Böttger, Friedrich, Michael Ketting, and Christoph Pietzsch. "Influence of solid contamination on the lubrication for carrier rollers and idlers of undercarriages for tracked vehicles." Journal of Terramechanics 31, no. 4 (July 1994): 247–56. http://dx.doi.org/10.1016/0022-4898(94)90020-5.

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11

Tkachenko, Victor, Svitlana Sapronova, Ivan Kulbovskiy, and Oleksij Fomin. "Research into resistance to the motion of railroad undercarriages related to directing the wheelsets by a rail track." Eastern-European Journal of Enterprise Technologies 5, no. 7 (89) (October 24, 2017): 65–72. http://dx.doi.org/10.15587/1729-4061.2017.109791.

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12

Raj, Baldev, T. Jayakumar, S. Mahadevan, and Sanjay K. Rai. "X-ray Diffraction Based Residual Stress Measurements for Assessment of Fatigue Damage and Rejuvenation Process for Undercarriages of Aircrafts." Journal of Nondestructive Evaluation 28, no. 3-4 (November 17, 2009): 157–62. http://dx.doi.org/10.1007/s10921-009-0058-4.

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13

Pan, Guanting, Jingbin Sun, Xiaole Wang, Fuzeng Yang, and Zhijie Liu. "Construction and Experimental Verification of Sloped Terrain Soil Pressure-Sinkage Model." Agriculture 11, no. 3 (March 12, 2021): 243. http://dx.doi.org/10.3390/agriculture11030243.

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The construction of a scientific and effective soil pressure-sinkage model under sloped terrain condition has important guiding significance for the investigation of the soil compaction effect. It is also important for the theoretical calculation of driving resistance and design optimization of the undercarriage structure of hillside metal-tracked tractors (HMTs). The classic Bekker’s pressure-sinkage model does not consider the influence of the soil water content, bulk density, slope angle, and other factors; therefore, it cannot be directly used to investigate the relationship between the soil compaction and its sinkage under sloped terrain conditions. To solve this problem, this study first verified that the soil water content and bulk density exert significant effects on the pressure–sinkage relationship under flat terrain condition. Secondly, a pressure-sinkage test was carried out using the quadratic rotation orthogonal combination design method, and the soil water content, density, and slope angle were considered. The pressure-sinkage curves of sloped terrain soils from Yangling and Yangxian in Shaanxi Province, and Huining and Jingning in Gansu Province were obtained. Then the pressure–sinkage parameters (sinkage exponent, cohesive modulus, and frictional modulus) were calculated using the weighted least-squares method. Thirdly, the mathematical relationship between the parameters and the soil water content, bulk density, and slope angle was obtained. Then Bekker’s model was modified to obtain the pressure–sinkage model of sloped terrain. Finally, the control variable method under slope angle of 10°, soil water content of 10%, and bulk density of 2 mg·m−3 were used to validate the model. The results revealed that the root-mean-square error between the calculated pressure value of the model and the measured value of the film pressure sensor was 1.614, 1.601, and 0.822, respectively. In the dynamic operation of a hillside tractor prototype, the calculated pressures between the supporting wheels were close to the measured values. It indicates that the modified soil pressure–sinkage model is more suitable for calculating the force at the bottom of the track between the supporting wheels. It can also provide an important theoretical basis for accurately calculating the pressure–sinkage parameters of sloped terrain soil. Additionally, this approach could provide theoretical and technical support for the rational arrangement of HMT undercarriages to reduce the soil sinkage and driving resistance.

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14

Vykydal, Petr, František Bauer, Pavel Sedlák, and Adam Polcar. "The influence of the undercarriage and tire inflation rating on drawbar characteristics of tractors." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 60, no. 5 (2012): 255–64. http://dx.doi.org/10.11118/actaun201260050255.

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The aim of the measurement was to verify the drawbar characteristics of chosen tractors with different undercarriages. The tractors were of the same engine power as well as type of gearbox (PowerShift – gears full shifted while loaded). We were dealing with the wheeled tractor John Deere 8320 and crawler tractor John Deere 8320RT. The measurement was implemented in the land register of Vrbovec (Znojmo region) in an area where green peas were grown as the main product and winter wheat as the preceding crop. The measured and the counterproductive tractors were interconnected by the rope containing strain-gauge force sensors. The wheeled tractor was decelerated by the tractor crawler. The tractor crawler was decelerated by two wheeled tractors. The wheeled tractor’s stress-strain properties were also measured applying two pressure rating alternatives. Variant A presented inflation pressure of 160 kPa on the front axle and of 140 kPa on the rear axle. Variant B applied inflation pressure of 120 kPa on the front axle and of 100 kPa on the rear axle. Measured and calculated findings reveal that the tractor crawler achieved higher drawbar power and lower specific tractive consumption and traction slip than the wheeled tractor with both variants of inflation. Comparing the stress-strain characteristics of the wheeled tractor with a different tire inflation illustrates that using variant B, higher drawbar power and lower specific tractive consumption and traction slip were measured.

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15

Chatterjee, Subrata, S. K. Ghosh, and P. S. Bandyopadhyay. "Thermo-Mechanically Controlled Processed Ultrahigh Strength Steels." Materials Science Forum 783-786 (May 2014): 685–91. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.685.

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A low-carbon, titanium and niobium (Ti-Nb) bearing and a low-carbon titanium, niobium and copper (Ti-Nb-Cu) bearing ultra high strength steel have been thermo-mechanically processed on a laboratory scale unit. Evolution of microstructure and mechanical properties of the above air cooled steels have been studied at different finish rolling temperatures (FRTs). Microstructural characterization reveals largely a mixture of granular bainite and bainitic ferrite along with the precipitation of microalloying carbide/carbonitride particles and/or Cu-rich precipitates. (Ti-Nb) bearing steel yields higher yield strength (1114-1143 MPa) along with higher tensile strength (1591-1688 MPa) and moderate ductility (12-13%) as compared to (Ti-Nb-Cu) bearing steel having yield strength (934-996 MPa) combined with tensile strength (1434-1464 MPa) and similar ductility (13%) for the selected range of 850-750°C FRT. Due to higher strength-ductility combinations, these present investigated steels can be regarded as the replacement material for ballistic applications as well as other sectors like defense, pipeline, cars, pressure vessels, ships, offshore platforms, aircraft undercarriages and rocket motor casings etc. Key words: Thermo-mechanical controlled processing, ultra high strength steel, microstructure, mechanical properties.

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16

Goeke, Sebastian, Tobias Brüggemann, and Dirk Biermann. "Development of Machining Processes for the Use of Multilayer High-Performance Coatings." ISRN Tribology 2013 (December 30, 2013): 1–6. http://dx.doi.org/10.5402/2013/750251.

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The development of corrosion- and wear-resistant high-performance coatings is important to improve components of mobile and stationary turbines, aerospace undercarriages, combustion engines, and hydraulic modules. New micro- and nanostructured coating materials and processes to machine these coatings are developed in order to increase the performance of workpieces and components, to enhance durability, and to reduce maintenance and manufacturing costs. At the Institute of Machining Technology (ISF), milling and grinding procedures have been developed for the preparation of the workpiece surface for the subsequent coating process. In contrast to conventional applications, the workpieces are not manufactured with the aim of achieving a minimized resulting surface roughness. Instead of this, a defined and adequate structure has to be generated, providing a good adhesion of the thermal sprayed coating on the workpiece surface. After first coating of the prepared substrates by a High-Velocity-Oxygen-Fuel (HVOF) coating process, the resulting surface topography does not have the required surface quality for a subsequent (Diamond Like Carbon) DLC coating process. In order to generate a more uniform surface structure, the deteriorated surface resulting from the HVOF coating process also has to be processed. Therefore, the application of an adapted grinding process with diamond wheels is used.

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17

Chołodowski, Jakub, Piotr A. Dudziński, and Michael Ketting. "A method for predicting the internal motion resistance of rubber-tracked undercarriages, Pt. 3. A research on bending resistance of rubber tracks." Journal of Terramechanics 97 (October 2021): 71–103. http://dx.doi.org/10.1016/j.jterra.2021.06.001.

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18

Chołodowski, Jakub, and Piotr A. Dudziński. "A method for predicting the internal motion resistance of rubber-tracked undercarriages, Pt. 2. A research on the motion resistance of road wheels." Journal of Terramechanics 96 (August 2021): 101–15. http://dx.doi.org/10.1016/j.jterra.2021.02.005.

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19

Akbar, Syaeful, and Wahyu Anhar. "Kajian Hasil Pengukuran Undercarriage Bulldozer Komatsu D375A-5 di PT. Pama Persada Nusantara site Batukajang." JST (Jurnal Sains Terapan) 4, no. 1 (April 16, 2018): 70–75. http://dx.doi.org/10.32487/jst.v4i1.455.

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Peranan komponen undercarriage pada bulldozer sangat penting, karena sangat mepengaruhi performa kerja dari bulldozer. Komponen undercarriage merupakan consumable part atau komponen habis pakai, yang rata-rata menghabiskan biaya + 60% dari total maintenance cost. Komponen ini harus diganti jika tingkat keausannya melebihi batas yang ditentukan oleh pabrik. Jika terlambat melakukan penggantian, maka performa kerja akan menurun, dan sebaliknya jika terlalu cepat dilakukan penggantian, maka akan terjadi pemborosan biaya. Oleh karena itu penggantian komponen undercarriage secara tepat sangat penting. Program monitoring pengukuran undercarriage perlu dilakukan untuk memonitor laju tingkat keausan komponen agar dapat diprediksi kapan waktu yang tepat untuk melakukan penggantian. Sudah barang tentu alat dan metode pengkuran harus tepat, agar hasil pengukuran akurat sehingga keputusan yang diambil adalah keputusan yang tepat. Penelitian ini bertujuan menginvestigasi, apakah alat dan metode yang digunakan dalam pengukuran komponen undercarriage adalah tepat dan akurat, dan untuk membuktikannya, dapat dilakukan dengan cara menguji hasil pengukuran yang dilakukan. Jika sebaran data hasil pengukuran berdistribusi normal, maka dapat disimpulkan alat dan metode pengukuran yang dilakukan sudah tepat dan benar. Berdasarkan hasil uji normalitas data terhadap hasil pengkuran komponenn undercarriage menunjukan bahwa alat dan metode pengukuran yang dilakukan mayoritas baik, karena angka signifikannya > 0,05 sedangkan hasil pengukuran komponen link-pitch, idler, dan sprocket tidak meyakinkan, karena nilai signifikan < 0,05. Oleh karena itu perlu dilakukan penelitian lebih lanjut, apakah alat atau metodenya yang tidak tepat, ataukah mungkin tingkat keausan yang terjadi pada komponen-komponen tersebut tidak normal.

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20

Dudziński, Piotr A., and Jakub Chołodowski. "A method for predicting the internal motion resistance of rubber-tracked undercarriages, Pt. 1. A review of the state-of-the-art methods for modeling the internal resistance of tracked vehicles." Journal of Terramechanics 96 (August 2021): 81–100. http://dx.doi.org/10.1016/j.jterra.2021.02.006.

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21

Smolnicki, Tadeusz, and Mariusz Stańco. "Determination of Centre of Gravity of Machines with the Rail Undercarriage." Solid State Phenomena 165 (June 2010): 359–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.165.359.

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Determination of centre of gravity of rotational handling machines with the rail undercarriage can be conducted by the measurement of rails strains induced by the wheels of driving machine. At the properly selected combination of superstructure locations with respect to undercarriage, it is possible to eliminate the systematic measurement failures. Determination of centre of gravity is necessary for proper weighing of the machine and selection counterweight. Otherwise it can cause the loss of stability or fast degradation of superstructure rotation bearing.

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22

Gunawan, Gian Oktaputra, Dwita Suastiyanti, and Pathya Rupajati. "Peningkatan Sifat Mekanis Permukaan Master Link Doozerr Komatsu Dengan IQT (Induction Quenching Tempering)." Jurnal Teknik Mesin ITI 4, no. 3 (December 5, 2020): 84. http://dx.doi.org/10.31543/jtm.v4i3.447.

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Baja SMnB3H-1 merupakan baja paduan rendah yang banyak digunakan sebagai material komponen mesin seperti master link pada undercarriage yang pada penggunaannya banyak mengalami gesekan atau aus. Master Link adalah salah satu komponen undercarriage bulldozer berfungsi untuk menghubungkan dan memutuskan proses assembly dan diassembly pada track link undercarriage. Untuk meningkatkan ketahanan aus pada master link, diperlukan perlakuan pengerasan permukaan salah satunya yaitu Induction Quenching Tempering (IQT). IQT adalah proses pengerasan baja menggunakan induksi dan dilanjut dengan pendinginan cepat (quenching) menggunakan soluble/polymer. Dalam penelitian ini dilakukan proses IQT dengan variasi holding time 45 detik, 60 detik dan 75 detik pada suhu austenite (850°). Tujuan penelitian ini adalah untuk mengetahui pengaruh holding time IQT terhadap kekerasan dan kekerasan kedalaman (Case Depth). Hasil dari uji kekerasan dan pengukuran case depth didapat nilai tertinggi yaitu pada holding time 75 detik, untuk nilai kekerasan 58,5 HRC sedangkan case depth posisi H1, H2 dan T adalah 31,62 mm, 30,12 mm dan 19,8 mm.

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23

Сливинский, Евгений, Evgeniy Slivinskiy, Валентин Киселёв, and Valentin Kiselev. "UNDERCARRIAGE MODERNIZATION OF DIESEL LOCOMOTIVE TEP60." Bulletin of Bryansk state technical university 2017, no. 5 (October 2, 2017): 79–83. http://dx.doi.org/10.12737/article_59b11cb6e8c169.20262273.

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24

Liu, Peng, Ying Yun Huang, Hao Peng Gao, and Da Sheng Ou. "Vibration Analysis of Diesel’s Undercarriage by Virtual Measure and Actual Measure." Advanced Materials Research 228-229 (April 2011): 621–26. http://dx.doi.org/10.4028/www.scientific.net/amr.228-229.621.

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This paper proposes to verify and test the vibration of diesel’s undercarriage got by virtual measure and actual measure through the analysis of time domain characteristics and amplitude frequency response characteristics of three-orientation vibrant speed of diesel’s undercarriage, represents the difference in time domain characteristics and amplitude frequency response characteristics got by virtual measure and actual measure, expounds the reasons of difference and puts forward a method to diminution the difference. It proves that virtual measure can replace actual measure in a way, though there are some difference in existence, we can erase these difference to the best of ours’ abilities through enough analysis.

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25

Frolov, Nikolay Olegovich, and Evgeniy Mikhaylovich Elkin. "A new way to control axis of headlight light beam in curves." Transport of the Urals, no. 4 (2020): 68–74. http://dx.doi.org/10.20291/1815-9400-2020-4-68-74.

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The paper presents a system of changing the deflection angle of an axis of headlight light beam according to the angle of inclination of the rolling stock undercarriage in curves. The authors have carried out the analysis of the existing systems of adjusting the direction of the locomotive headlight light beam. The authors have also determined the dependencies of deflection angle of the headlight light beam axis from the angle of inclination of undercarriage in curves and have calculated possible angles of light beam axis deflection. As a result, the paper proposes and describes an algorithm of a system for changing the deflection angle of matrix headlight light beam axis.

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26

Slivinskiy, Evgeniy, and Sergey Radin. "UNDERCARRIAGE UPDATING OF DIESEL LOCOMOTIVE TE 109." Bulletin of Bryansk state technical university 2020, no. 1 (January 17, 2020): 28–33. http://dx.doi.org/10.30987/1999-8775-2020-2020-1-28-33.

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In the design of modern diesel locomotives equipped with three-axial bogies both in our country and abroad there is widely used a spring hanger made as cylindrical spiral springs of compression with the use of hydraulic shock absorbers. At that the boxes of wheel pairs are connected with frames with the aid of carriers. A considerable drawback of such bogies is that these designs do not allow obtaining the angular turn of wheel pairs during their motion along curvilinear areas of a railway. That is why in practice an increased wear of wheel flanges of wheel pairs takes place. In Bunin SU of Yelets at the level of the invention (RU2604924) there is developed a promising design of a spring hanger excluding such a drawback and a series of computations for substantiation of its efficient design parameters. The investigation results are recommended by research and industrial companies in the field of heavy engineering both in our country, and abroad with the purpose of the further study of the design developed and its possible introduction in practice.

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27

Haines, G. H. "Influence of Rough Runways on Undercarriage Design." Aircraft Engineering and Aerospace Technology 57, no. 11 (November 1985): 2–8. http://dx.doi.org/10.1108/eb036183.

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28

Zain, Abdul. "PERANCANGAN SISTEM PENGAMAN TRACK UNDERCARRIAGE PADA BULLDOZZER." Jurnal Sinergi Jurusan Teknik Mesin 15, no. 2 (May 26, 2019): 173. http://dx.doi.org/10.31963/sinergi.v15i2.1192.

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Perancangan sistem pengaman trackundercarriage pada bulldozer berbasis mikrokontroler bertujuan meningkatkan pengaman pada bulldozer sehingga dapat mencegah terjadinya kerugian yang besar terhadap jiwa manusia. Alat ini bekerja setelah sensor PIR KC7783R mendeteksi gerakan manusia, PIR sensor KC7783R akan mengirim sinyal ke mikrokontroler, mikrokontroler akan menyalakan driverrelay sehingga trackundercarriage tidak dapat berputar. Sistem ini telah terealisasi pada bulldozer. Jika ada seseorang mendekati bladebulldozer dan terdeteksi oleh sensor PIR KC7783R, maka track akan berhenti berputar selama 5 (lima) detik. Meskipun demikian, sistem ini masih mempunyai kelemahan yaitu hanya bisa dilaksanakan pada siang hari. Sensor mendeteksi adanya yang panas berlebihan sehingga sensor akan aktif dengan sendirinya, akan t etapi kondisi ini hanya berlaku apabila panas yang masuk ke sensor lebih dari 70º C.

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29

Kruchek, Victor, and Andrey Yevstafiyev. "Instrument accuracy influence on kinematics of rotary traverse of axial gear set with horizontal jet thrust in a group tractive drive of a lokomotive." Proceedings of Petersburg Transport University, no. 2 (June 20, 2017): 256–66. http://dx.doi.org/10.20295/1815-588x-2017-2-256-266.

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Objective: To obtain analytical responses of linear and angular movements of horizontal jet thrust and axial reduction unit, appearing in the process of their production and group tractive drive assembly, occurring as a result of vertical wheelset and engine’s undercarriage frame shifts during engine movement. The given responses are the basis for identifying its velocity, acceleration, and dynamic loads on drive components, as well as searching for methods to boost drive components reliability, taking into account its constructive specificities and running conditions. Methods: Analytical responses were identified on the basis of higher mathematics, the laws of theoretical mechanics as well as trigonometry knowledge application. Results: Analytical responses of kinematic spatial movements of horizontal jet thrust and an axial reduction unit with instrument accuracy of a group tractive drive were obtained from vertical engine’s undercarriage frame shifts and locomotives wheelset. Boundary conditions of jet thrust slopes were detected, as well as center lines of axial reduction units. The analysis of established relations was performed. Possible scheme variants of spatial movements of horizontal jet thrust and a wheel set axial reduction unit in engine’s undercarriage frame were presented with possible discrepancies of linear dimensions from production tolerance. Characteristic curves of vertical shifts of actual towline constructions from vertical shifts of undercarriage frame during locomotive’s movement were graphed. Practical importance: On the basis of obtained relations the analysis of linear displacement, angular velocities and accelerations of jet thrusts and wheel set axial reduction units is possible, as well as the generation of rational and robust wheel set cardan tractive gear constructions for locomotives with minimal dynamic load on its elements. The results of analytical research might be applied in the designing of new engines with high dynamic parameters.

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30

Wang, Xiao Jin, Xin Li, Xiao Ling Peng, and Qi Feng Fang. "The Safe Auxiliary System for Aircraft’s Forced Landing." Advanced Materials Research 940 (June 2014): 306–10. http://dx.doi.org/10.4028/www.scientific.net/amr.940.306.

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Aiming at the abnormal landing of the aircraft which caused by the invalidation of the undercarriage, a safe auxiliary system for aircraft’s forced landing is proposed. Firstly, the article introduces the basic compositions and the main functions of each part in the system, and proposes the undercarriage robot based on the aircraft arresting system and also the underground rail system based on the steam-driven catapult principle is put forward. Secondly, the detail introductions on the system’s operating principles for aiding the forced landing of aircraft are given separately from starting, docking, decelerating and separation. At last, an expert control system based on knowledge base is proposed for realizing the calculation of docking position, velocity matching and the optimal decelerating scheme.

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Kravchenko, Vladimir Alekseevich, Lyudmila Vladimirovna Kravchenko, and Izzet Melukovich Melikov. "Evaluation of traction-chain properties of powerful tractors and combines complete with varieties of various performance." Agrarian Scientific Journal, no. 8 (August 31, 2020): 83–88. http://dx.doi.org/10.28983/asj.y2020i8pp83-88.

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The purpose of this study is to determine the traction and coupling properties of the undercarriage systems of wheeled mobile energy vehicles equipped with tires with different internal structures of the tire cover. It has been proved that the breaker ply rating for class 5 tractor should be equal to four, the carcass ply rating should be equal to six, the cord threads of the breaker and the carcass should have the slope of 70 and 0? respectively; the values of the corresponding tire parameters should be: 7, 6, 62, 15? for the propulsor of a combine. It has been established that when the undercarriage systems are equipped with experimental tires, the traction and coupling properties of mobile energy vehicles are improved.

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32

Bazhukov, A. E., and Sergey I. Hoodorozhkov. "CALCULATING THE UNDERCARRIAGE PARAMETERS OF A TRACKED VEHICLES." St. Petersburg State Polytechnical University Journal 231, no. 4 (January 2016): 189–95. http://dx.doi.org/10.5862/jest.231.20.

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33

Heslehurst, Rikard Benton. "Undercarriage Lateral Tip-Over Criteria: a Parametric Study." Journal of Aircraft 48, no. 6 (November 2011): 1825–28. http://dx.doi.org/10.2514/1.46564.

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34

Zhang, Ren Peng, Yi Yong Hu, and Jun Yao. "Reliability Enhancement Test on Undercarriage Signal Light Box." Applied Mechanics and Materials 291-294 (February 2013): 2403–7. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.2403.

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Based on the theory of failure physics, reliability enhancement test is a test technology of stimulation in order to improve reliability by discovering, researching and curing failure. In this paper, the main factors inducing failure modes of undercarriage light box were analyzed, and the environmental sensitive stresses affecting reliability were determined. The testing program was designed and test profiles were established based on the theory of reliability enhancement test. Additionally, the test results were analyzed based on failures of products in order to carry out improvement measures.

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35

Gajanana, Dr S., B. Suresh Kumar Reddy, T. Shivendra Lohit, K. Anil Kumar Reddy, and Ankur Jain. "Induction Hardening and Microstructure Analysis of Micro-Alloyed Steel Roller Shaft of an Undercarriage." International Journal of Engineering Research 4, no. 7 (July 1, 2015): 358–62. http://dx.doi.org/10.17950/ijer/v4s7/705.

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36

Polyakova, E. Ya, B. O. Polyakov, and S. I. Dubinskiy. "On icing of railway rolling stock under operating conditions of Northern Latitudinal Railway." PROCEEDINGS OF PETERSBURG TRANSPORT UNIVERSITY 18, no. 1 (March 31, 2021): 72–79. http://dx.doi.org/10.20295/1815-588x-2021-1-72-79.

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Objective: Study of the mechanism of forming compacted snow masses deposits on the surfaces of the undercar space and undercarriage of the rolling stock, study of forming microclimatic conditions in the niches of the undercarriage due to the interaction of air masses of the incoming ﬂow with convective ﬂows formed during the operation of the brake equipment. Methods: Solid models in the SolidWorks software package are developed, CFD analysis is implemented by the ﬁnite volume method in the FlowSimulation module based on the numerical solution of the Navier–Stokes equations. Results: By means of numerical modeling, the presence of a centrifugal-transverse zone of the ﬂuid behind the surface of the wheel rim was established, as a result of which drops are carried out in the radial direction, adhering to the metal parts of the undercar space, creating a white type of ice formations that can increase in size due to the braking process. To redirect the ﬂow containing snow inclusions, a deﬂector device is proposed. Diagrams of temperature ﬁelds in the plane of the bogie brake discs were obtained with and without a deﬂector, a comparative analysis was carried out, and a conclusion was made about the necessity of using the device. Practical importance: The performed numerical modeling made it possible to visually demonstrate the main zones of the ice build-up formation on the undercarriage of a moving rolling stock and to identify a variant of controlling the dimensions of these areas using the proposed device of a mechanical deﬂector.

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37

Cheban, Anton, and Natalia Khrunina. "The technologies of application and design features of layer by layer milling machines." E3S Web of Conferences 56 (2018): 01007. http://dx.doi.org/10.1051/e3sconf/20185601007.

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Significant quantity of surface miners, various designs and engineering factors are involved in open-cut mining. The article authors offer expanded classification of applied and perspective surface miners with regard to features of design of work tools, rock destruction tool, undercarriage and other elements.

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38

Kirichenko, Igor. "Evaluating the loads on bulldozer undercarriage under longitudinal trim." IMK-14 - Istrazivanje i razvoj 26, no. 3 (2020): 57–60. http://dx.doi.org/10.5937/imk2003057k.

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Based on the air-wheel type machines simulation, a bulldozer mathematic model for all its operating modes has been worked out. Evaluation of loads on the bulldozer undercarriage under longitudinal trim has been considered as an example of possible implementing the potential of the mathematical model proposed.

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39

Bharath, M., Pallavi Singh, and Badari Kantheti. "Determination of Influence of Parameters on Undercarriage Shock Absorber." SAE International Journal of Aerospace 11, no. 2 (December 31, 2018): 85–114. http://dx.doi.org/10.4271/01-11-02-0006.

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40

Vorobyev,, А. А., A. M. Budyukin, and V. G. Kondratenko. "Analysis of current technical solutions applied in the design of low-floor tram cars." PROCEEDINGS OF PETERSBURG TRANSPORT UNIVERSITY 18, no. 1 (March 31, 2021): 7–15. http://dx.doi.org/10.20295/1815-588x-2021-1-7-15.

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Objective: To show the prospects of using public urban transport and, ﬁrst of all, high-capacity light rail rolling stock for urban transportation, and in the immediate future, the possibility of completely abandoning private vehicles for movement around the city. As a result, this will help lessen the trafﬁc jam load in Russian megacities. Methods: The authors have analyzed and applied best practice of the leading tram companies in Europe (Vienna, Prague, Riga, etc.), analyzed the most progressive designs of the rolling stock and their undercarriage, and compared foreign and domestic experience of service facilities operation. Results: The experience of many European companies has proved the feasibility of using cars with swivel bogies, which have a beneﬁcial effect on the track and make it possible to pass curves of small radii. The use of wagons made of multi-link structures allowed designing a completely low-ﬂoor cabin. It is advisable to place a gearbox and an electric drive on the outside of the low-ﬂoor car undercarriage, or to use a gearless drive and low-speed electric motors. Practical importance: The introduction of low-ﬂoor cars in cities improves the accessibility of this type of transport for passengers, primarily for passengers with disabilities, and signiﬁcantly reduces the time of their boarding (disembarking). The advantage of cars with swivel bogies is shown. The increased complexity of the undercarriage design allows designers to create an extremely low ﬂoor cabin, but this consequently leads to an increase in the cost of rolling stock, an increase in repair costs, stricter requirements for the support services and a demand for highly qualiﬁed technical personnel. It is recommended to purchase domestic low-ﬂoor rolling stock as the most adapted to operation in Russian cities.

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41

Fu, Li, Liping Lin, and Yuandong Zhou. "Research of the Key Technologies for Undercarriage Landing Buffer System." Procedia Environmental Sciences 10 (2011): 549–54. http://dx.doi.org/10.1016/j.proenv.2011.09.089.

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42

Rich, Frederick A., and Christopher Kluse. "Analysis of Steel Track Undercarriage Wear Based on Geographic Location." American Journal of Engineering and Applied Sciences 11, no. 1 (January 1, 2018): 359–67. http://dx.doi.org/10.3844/ajeassp.2018.359.367.

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43

HARTLEB, J., and M. KETTING. "Stable algorithm to simulate dynamic undercarriage loads of tracked vehicles." Archives of Civil and Mechanical Engineering 11, no. 4 (January 2011): 867–74. http://dx.doi.org/10.1016/s1644-9665(12)60083-1.

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44

Hu, Weipeng, Mingzhe Song, Zichen Deng, Xindong Wang, and Zhiwei Xiong. "Structure-preserving Analysis on Folding and Unfolding Process of Undercarriage." Acta Mechanica Solida Sinica 29, no. 6 (December 2016): 631–41. http://dx.doi.org/10.1016/s0894-9166(16)30333-0.

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45

Kindl, Vladimir, Karel Hruska, Roman Pechanek, and Bohumil Skala. "Redesign of an Undercarriage Wheel for a Self-Acting Robot." IEEE Transactions on Magnetics 52, no. 2 (February 2016): 1–5. http://dx.doi.org/10.1109/tmag.2015.2488596.

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46

Bošnjak, Srđan M., Zoran D. Petković, Aleksandar M. Simonović, Nenad Đ. Zrnić, and Nebojša B. Gnjatović. "‘Designing-in’ failures and redesign of bucket wheel excavator undercarriage." Engineering Failure Analysis 35 (December 2013): 95–103. http://dx.doi.org/10.1016/j.engfailanal.2012.12.007.

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47

Erdik, A., S. A. Kilic, N. Kilic, and S. Bedir. "Numerical simulation of armored vehicles subjected to undercarriage landmine blasts." Shock Waves 26, no. 4 (May 27, 2015): 449–64. http://dx.doi.org/10.1007/s00193-015-0576-1.

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48

Miková, Ľubica, Michal Kelemen, and Dušan Koniar. "Mathematical Model of Four Wheeled Mobile Robot and its Experimental Verification." Applied Mechanics and Materials 611 (August 2014): 130–36. http://dx.doi.org/10.4028/www.scientific.net/amm.611.130.

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The paper deals with creation of a mathematical model of the mobile robot. For description of the kinematic variables such as position and velocity of each wheel a transformation matrix is used. The simulation model can be applied for calculation of assumed of the undercarriage centre of gravity and path of wheels. The function model was also used for experimental verification of the results of simulation experiments.

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49

KUĽKA, Jozef, Melichar KOPAS, Eva FALTINOVÁ, Martin MANTIČ, and Peter BIGOŠ. "KINEMATIC LINKAGES IN THE HINGED UNDERCARRIAGE OF A MOBILE WORKING MACHINE." Scientific Journal of Silesian University of Technology. Series Transport 91 (June 1, 2016): 81–88. http://dx.doi.org/10.20858/sjsutst.2016.91.8.

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50

Wood, Richard. "EPA Smartway Verification of Trailer Undercarriage Advanced Aerodynamic Drag Reduction Technology." SAE International Journal of Commercial Vehicles 5, no. 2 (September 24, 2012): 607–15. http://dx.doi.org/10.4271/2012-01-2043.

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