Relevant bibliographies by topics / A running gear / Journal articles

To see the other types of publications on this topic, follow the link: A running gear.

Journal articles on the topic 'A running gear'

Author: Grafiati

Published: 28 May 2022

Last updated: 18 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'A running gear.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

Polach, O. "Coupled single-axle running gears—a new radial steering design." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 216, no. 3 (2002): 197–206. http://dx.doi.org/10.1243/095440902760213620.

Full text

Abstract:

New railway vehicle concepts with broader and shorter carbodies necessitate new running gear concepts. One of the possibilities, the single-axle running gear, offers several advantages. The disadvantage of the conventional single-axle running gear during curving can be counteracted with a simple coupling between the single-axle running gears of the neighbouring carbodies. This paper presents parameter analysis and design principle of the coupled single-axle running gears. They can be constructed for an almost ideal curve negotiation in a great range of curve radii. The coupling of the running gears not only improves the running characteristics in a curve but also increases the stability limit. Bombardier Transportation Winterthur has developed the coupled single-axle running gears called FEBA. The test runs with prototype as well as with serial running gears in the Norwegian commuter train Class 72 have fully confirmed the anticipated running characteristics.

APA, Harvard, Vancouver, ISO, and other styles

Miltenović, Aleksandar, Milan Banić, Jovan Tanasković, Jelena Stefanović-Marinović, Damjan Rangelov, and Marko Perić. "WEAR LOAD CAPACITY OF CROSSED HELICAL GEARS." Facta Universitatis, Series: Mechanical Engineering 22, no. 1 (2024): 125. http://dx.doi.org/10.22190/fume220114015m.

Full text

Abstract:

The paper presents a wear load capacity of crossed helical gears (gear pair consists of a worm and a helical gear). Crossed helical gears are similar to worm gear pairs, and it is logical to extend the load capacity calculation approach of worm gears for the case of crossed helical gears. One of the disadvantages of crossed helical gear sets is very high running-in wear. The paper explains the transition between running-in and steady-state wear and proposes a joint wear calculation model. The paper outlines a proposal to extend the calculation method for wear load capacity from a worm gear pair to the case of crossed helical gears (a worm with a helical gear). This calculation method for determining the wear load capacity of crossed helical gears is verified for the cases when the wheel is of bronze CuSn12Ni2-C-GCB and sintered steel Fe1.5Cr0.2Mo.

APA, Harvard, Vancouver, ISO, and other styles

Andrews, C. "SportsTech: Running Gear." Engineering & Technology 12, no. 4 (2017): 78–79. http://dx.doi.org/10.1049/et.2017.0409.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Kreutz, Stephan, Wolfgang Bartusch, Jens Ullrich, Holm Bretschneider, and Hartmut Bauwe. "The Running Gear." ATZextra worldwide 14, no. 2 (2009): 28–31. http://dx.doi.org/10.1365/s40111-009-0165-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Song, Chun Yu, Jing Ru Liu, and Xiu Juan Zhang. "Fracture Reasons and Improvements for the Running Gear of Shearers." Advanced Materials Research 490-495 (March 2012): 2733–37. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.2733.

Full text

Abstract:

Running traction mechanism of shearers is adopted as the analysis object in this paper. The finite element models for the elastic contact analysis between the running gears and pin-rails are created. When the gears are running, the variation principles of contact spots, contact force, and internal stress for the gears and pin-rails at the different contact positions are analyzed. The calculation results show that the maximum stress is located at the edges of the gear teeth for the different contact positions. When the teeth are loaded with the repeated large stress, cracks are produced at the tooth edges at first and then are growing. The tooth breakage is produced at last. Gear chamfers using two circulars at the tooth edges can change the location of the maximum stress and the maximum MISES stress can be reduced by 20% or more. Therefore, the fracture problem of gear teeth is solved basically.

APA, Harvard, Vancouver, ISO, and other styles

Ren, Zhong Yi. "Quadruple-Arc Gear Design, Digital Processing and Carrying Capacity Test." Advanced Materials Research 295-297 (July 2011): 2603–6. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.2603.

Full text

Abstract:

Both the industrial sector and the academic study is the single-arc and double-arc gear at present, that is, tooth profile curve are composed by one or two arc. This paper propose a new arc gear —, which tooth profile curve are composed by four arcs, and gain a invent patent (patent number is 200810212732.1). Finite element analysis and tests conformed that qssuadruple-arc gear carrying capacity is more than 30% higher than double-arc gear. Tests also confirmed that quadruple-arc gears are smooth and have less noise compared with double-arc gears when running.

APA, Harvard, Vancouver, ISO, and other styles

Winkler, KJ, S. Schurer, T. Tobie, and K. Stahl. "Investigations on the tooth root bending strength and the fatigue fracture characteristics of case-carburized and shot-peened gears of different sizes." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 21-22 (2019): 7338–49. http://dx.doi.org/10.1177/0954406219841650.

Full text

Abstract:

This paper contains data of the research project FVA 293 III by Schurer et al. and investigates the tooth root bending strength and the fatigue fracture characteristics of case-carburized and shot-peened gears of different sizes. The investigated carburized and shot-peened gears are made out of high-purity steel batches of the materials 20MnCr5 and 18CrNiMo7-6. Three different gear sizes with the normal modules mn = 1.5, 5, and 10 mm are examined in pulsator test rigs. Additionally, gear running tests in the FZG back-to-back gear test rigs for the gear size mn = 1.5 are performed.

APA, Harvard, Vancouver, ISO, and other styles

Li, Jubo, Songlin Wang, Jianjun Yang, Huijie Zhang, and Hengbo Zhao. "A Digital Twin-Based State Monitoring Method of Gear Test Bench." Applied Sciences 13, no. 5 (2023): 3291. http://dx.doi.org/10.3390/app13053291.

Full text

Abstract:

The gear test bench is important equipment for analyzing gear performance, detecting gear quality, and providing basic data for gear design and machining. In order to monitor the running state of the gear test bench, predict its running performance both timely and effectively, and guarantee its stable operation, a digital twin-based state monitoring method of the gear test bench is proposed in this paper. The state monitoring system of the gear test bench based on the digital twin model is constructed to simulate its normal running state in real time. On this basis, through the acquisition of physical information of the gear test bench, the developing of the state monitoring system, and the simulation of the digital twin model, the real-time state monitoring of the normal operation gear test bench is realized. The test results of the closed power flow gear test bench show that the digital twin simulation results of the gear test bench are basically consistent with it. The proposed state monitoring system can map the normal running state of the gear test bench, so as to realize the running state monitoring of the gear test bench.

APA, Harvard, Vancouver, ISO, and other styles

Wang, Tao, Wei Zhong Zhang, Chen Xie, Deng Xia Zhang, and Yan Ru. "Fatigue Life Prediction of Gear Transmission Based on ANSYS." Advanced Materials Research 1055 (November 2014): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amr.1055.161.

Full text

Abstract:

With the study subject of the gear transmission in an unmanned system, several common methods of fatigue life prediction are analyzed. According to the actual running state, S-N nominal stress method is used to predict the fatigue life of the gears. Based on the S-N data of the gear material and the linear cumulative damage theory, ANSYS is used to estimate the bending fatigue life of the gears, so as to obtain the fatigue life loss coefficient of the gears. It provides a reliable data reference of the design, use and maintenance of the gear transmission in unmanned system.

APA, Harvard, Vancouver, ISO, and other styles

Kozik, Bogdan, Jadwiga Pisula, Mariusz Dębski, and Tomasz Dziubek. "Durability of involute gear pairs manufactured by rapid prototyping methods." Polimery 70, no. 5 (2025): 340–44. https://doi.org/10.14314/polimery.2025.5.5.

Full text

Abstract:

The durability of cylindrical spur gears made of ABS and PU manufactured using the FDM (Fused deposition modeling) additive method and vacuum casting was investigated. The tests were carried out for pairs of gears with an involute profile for three values of the profile angle: 20, 25 and 30° to determine the effect of the profile angle on the gear operation time. The effect of running-in on gear durability was also assessed.

APA, Harvard, Vancouver, ISO, and other styles

Szpaczyńska, Daniela, Mirosław Przybysz, and Tomasz Muszyński. "Comparison of Multi-Tracked Running Gears in Terms of Obstacle Negotiation Capabilities." Applied Sciences 15, no. 4 (2025): 1696. https://doi.org/10.3390/app15041696.

Full text

Abstract:

This paper concerns lightweight—up to 800 kg—UGVs (unmanned ground vehicles), where multi-tracked running gears are used to improve the obstacle negotiation performance. A comparison of four different multi-tracked systems and, for reference, classic tracked running gear is presented. Simulations in a multi-body dynamics program were performed, where running gear solutions overcame three typical obstacles and were assessed using a total of five effectiveness and functionality criteria. The simulation models took into account the variable track–ground contact surface. The ground parameters were validated by means of experimental tests for grassy terrain. In the results, the most advantageous solutions in each category are indicated, and design guidelines for increasing the obstacle-overcoming capabilities of multi-tracked UGVs are presented.

APA, Harvard, Vancouver, ISO, and other styles

Wu, Jie, and Jia Quan Wang. "Study on Design Method of the Double Arc Gear Hobs." Advanced Materials Research 823 (October 2013): 257–60. http://dx.doi.org/10.4028/www.scientific.net/amr.823.257.

Full text

Abstract:

This article find that one of the effecting the double circular arc gear s running performance is the double circular arc gear tooth profile precision, through analysis to the running-in properties of double arc gear. The problems about tooth profile precision of gear hobs caused by the current profiling theory and approximate design method of gear hobs are analyzed. In the design of circular arc gear hob, use the space engagement theory, can eliminating the tooth error. Acquiring the equation of hobs basic of worm tooth surface by analytical and calculation that the establishment of basic gear rack and worm of hob meshing. The hob not only eliminate the tooth profile error in manufacturing, but also improve the running performance of double circular arc gear, and provides the theory evidence for engineering practice.

APA, Harvard, Vancouver, ISO, and other styles

Carrier, D. R., C. S. Gregersen, and N. A. Silverton. "Dynamic gearing in running dogs." Journal of Experimental Biology 201, no. 23 (1998): 3185–95. http://dx.doi.org/10.1242/jeb.201.23.3185.

Full text

Abstract:

Dynamic gearing is a mechanism that has been suggested to enhance the performance of skeletal muscles by maintaining them at the shortening velocities that maximize their power or efficiency. We investigated this hypothesis in three domestic dogs during trotting and galloping. We used ground force recordings and kinematic analysis to calculate the changes in gear ratio that occur during the production of the external work of locomotion. We also monitored length changes of the vastus lateralis muscle, an extensor muscle of the knee, using sonomicrometry in four additional dogs to determine the nature and rate of active shortening of this muscle. During both trotting and galloping, the gear ratios of the extensor muscles of the elbow, wrist and ankle joints were relatively constant early in limb support, but decreased rapidly during the second half of support. The gear ratio at the hip exerted an extensor moment initially, but decreased throughout limb support and became negative midway through support. This pattern of decreasing gear ratio during the second half of support indicates that dynamic gearing does not maximize muscle power or efficiency at the elbow, wrist, hip and ankle joints. In contrast,the extensor muscles of the shoulder and knee joints exhibited an increase in gear ratio during limb support. In two dogs, the vastus lateralis muscle shortened at a relatively constant rate of 3.7-4 lengths s-1 during intermediate-speed galloping. This pattern of increasing gear ratio and constant velocity of muscle shortening at the knee joint is consistent with the hypothesis of dynamic gearing. Given the amount of work done at the knee and shoulder joints of running dogs, dynamic gearing may contribute to the economy of constant-speed running and may be important to integrated limb function.

APA, Harvard, Vancouver, ISO, and other styles

Gao, Zhi, Meixuan He, Xinming Zhang, and Shuo Gao. "An Evidential Reasoning Assessment Method Based on Multidimensional Fault Conclusion." Applied Sciences 14, no. 17 (2024): 7689. http://dx.doi.org/10.3390/app14177689.

Full text

Abstract:

The running gear mechanism is a critical component of high-speed trains, essential for maintaining safety and stability. Malfunctions in the running gear can have severe consequences, making it imperative to assess its condition accurately. Such assessments provide insights into the current operational status, facilitating timely maintenance and ensuring the reliable and safe operation of high-speed trains. Traditional evidential reasoning models for assessing the health of running gear typically require the integration of multiple characteristic indicators, which are often challenging to obtain and may lack comprehensiveness. To address these challenges, this paper introduces a novel assessment model that combines evidential reasoning with multidimensional fault conclusions. This model synthesizes results from various fault diagnoses to establish a comprehensive health indicator system for the running gear. The diagnostic outcomes serve as inputs to the model, which then assesses the overall health status of the running gear system. To address potential inaccuracies in initial model parameters, the covariance matrix adaptation evolution strategy (CMA-ES) algorithm is utilized for parameter optimization. Comparative experiments with alternative methods demonstrate that the proposed model offers superior accuracy and reliability in assessing the health status of high-speed train running gear.

APA, Harvard, Vancouver, ISO, and other styles

Hsu, Ruei-Hung, and Chi-Wen Han. "Study on Crowning of helical gear shaved by CNC shaving machine with three synchronous axes." MATEC Web of Conferences 293 (2019): 01004. http://dx.doi.org/10.1051/matecconf/201929301004.

Full text

Abstract:

Gear Shaving is the most efficient and economical ways to finish gears before heat treatment. The workpiece after shaving operation can reduce the running noise, which often used in the automobile industry. In this paper, we propose a mathematical model of a CNC shaving machine with multi-synchronous axes. The proposed mathematical model can be used to calculate the crowning tooth surface of the gear in parallel-shaving process.

APA, Harvard, Vancouver, ISO, and other styles

Smith, J. D. "A Gear Test Rig with a Variable Torque Actuator." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 206, no. 5 (1992): 311–15. http://dx.doi.org/10.1243/pime_proc_1992_206_133_02.

Full text

Abstract:

The requirements for a test rig for gear damage monitoring purposes and the problems of standard recirculating designs are discussed. In particular, the need for torque variation while running is emphasized. An economical design based on easily replaceable standard gears and the use of an air torque actuator is shown. Problems were encountered with air leakage and with gear lubricating oil flows initially but simple solutions were applied successfully.

APA, Harvard, Vancouver, ISO, and other styles

Zaman, Muhammad, Muhammad Atif, and Mudassar Naseer. "Formal Verification of Twin Clutch Gear Control." VAWKUM Transactions on Computer Sciences 10, no. 2 (2022): 24–33. http://dx.doi.org/10.21015/vtcs.v10i2.1273.

Full text

Abstract:

Twin clutch model enables the power-shifts as conventional planetary automatic transmission and eradicates the disadvantages of single clutch transmission. The automatic control of the dual clutches is a synchronization problem. Particularly, to control the clutching component that engages torque when running in one direction of revolution and disengages when running in the other direction, which exchange the torque smoothly during torque phase of the gear-shifts on planetary-type automatic transmissions, seemed for quite a while hard to compensate through clutch control. Another problem is to skip gears during multiple gearshifts. However, the twin clutch gear control described in ["M Goetz, M C Levesley and D A Crolla. Dynamics and control of gearshifts on twin clutch transmissions, Proceedings of the Institution of Mechanical Engineers, Journal of Automobile Engineering 2005"], a significant improvement in twin clutch gear control system is discussed. We formally specify the algorithm for the twin clutch gear control system and verify it using the model-checking. Formal methods have a high potential to measure correctness of communicating protocols. We use UPPAAL for formal specification and verification. Our results show that the twin clutch gear control model partially fulfills its functional requirements

APA, Harvard, Vancouver, ISO, and other styles

Shih, Yi-Pei, and Zhang-Hua Fong. "Flank Modification Methodology for Face-Hobbing Hypoid Gears Based on Ease-Off Topography." Journal of Mechanical Design 129, no. 12 (2006): 1294–302. http://dx.doi.org/10.1115/1.2779889.

Full text

Abstract:

The fundamental design of spiral bevel and hypoid gears is usually based on a local synthesis and a tooth contact analysis of the gear drive. Recently, however, several flank modification methodologies have been developed to reduce running noise and avoid edge contact in gear making, including modulation of tooth surfaces under predesigned transmission errors. This paper proposes such a flank modification methodology for face-hobbing spiral bevel and hypoid gears based on the ease-off topography of the gear drive. First, the established mathematical model of a universal face-hobbing hypoid gear generator is applied to investigate the ease-off deviations of the design parameters—including cutter parameters, machine settings, and the polynomial coefficients of the auxiliary flank modification motion. Subsequently, linear regression is used to modify the tooth flanks of a gear pair to approximate the optimum ease-off topography suggested by experience. The proposed method is then illustrated using a numerical example of a face-hobbing hypoid gear pair from Oerlikon’s Spiroflex cutting system. This proposed flank modification methodology can be used as a basis for developing a general technique of flank modification for similar types of gears.

APA, Harvard, Vancouver, ISO, and other styles

Khodaee, Alireza, and Arne Melander. "A Study of the Effects of Reversal Cycles in the Gear Rolling Process by Using Finite Element Simulations." Key Engineering Materials 611-612 (May 2014): 134–41. http://dx.doi.org/10.4028/www.scientific.net/kem.611-612.134.

Full text

Abstract:

The manufacturing of machine components with sustainable and innovative methods is an interesting topic for research. Gears are some components which have complexity in both design and production technology. Therefore applying innovative methods on gear manufacturing can be of interest to industry. One of the most promising production methods for gear wheels is Gear Rolling. The gear wheel is formed during a certain rolling process from a cylindrical blank into the final designed shape. The process of gear rolling with rotational gears is progressing by running several rolling cycles with one, or two dies in contact with a work-piece. A specified rotational speed and radial feed speed is applied to the dies in order to form the required geometry on the blank. In this paper, the authors have simulated the process with the finite element code, DEFORM 3D. Especially the effects of reversal cycles on final gear wheel geometry have been evaluated from the simulations. Different settings for the rotation direction of the dies have been used and the effects are evaluated with specific quality criteria.

APA, Harvard, Vancouver, ISO, and other styles

Jamari, J., M. I. Ammarullah, I. Y. Afif, R. Ismail, M. Tauviqirrahman, and A. P. Bayuseno. "Running-in Analysis of Transmission Gear." Tribology in Industry 43, no. 3 (2021): 434–41. http://dx.doi.org/10.24874/ti.1092.04.21.08.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Kim, Chul Su, and Gil Hyun Kang. "Durability Analysis of the Reduction Gear for High Speed Train Considering Driving Histories." Advanced Materials Research 586 (November 2012): 269–73. http://dx.doi.org/10.4028/www.scientific.net/amr.586.269.

Full text

Abstract:

To assure the safety of the power bogies for train, it is important to perform the durability analysis of reduction gear considering a variation of velocity and traction motor capability. In this study, two types of applied load histories were constructed from driving histories considering the tractive effort and the train running curves by using dynamic analysis software (MSC.ADAMS). Moreover, this study was performed by evaluating fatigue damage of the reduction gears for rolling stock using durability analysis software (MSC.FATIGUE). The finite element model for evaluating the carburizing effect on the gear surface was used for predicting the fatigue life of the gears. The results showed that the fatigue life of the reduction gear would decrease with an increasing numbers of stops at station.

APA, Harvard, Vancouver, ISO, and other styles

Cheng, Chao, Ming Liu, Bangcheng Zhang, Xiaojing Yin, Caixin Fu, and Wanxiu Teng. "Health Assessment of High-Speed Train Running Gear System under Complex Working Conditions Based on Data-Driven Model." Mathematical Problems in Engineering 2020 (July 23, 2020): 1–13. http://dx.doi.org/10.1155/2020/9863936.

Full text

Abstract:

It is very important for the normal operation of high-speed trains to assess the health status of the running gear system. In actual working conditions, many unknown interferences and random noises occur during the monitoring process, which cause difficulties in providing an accurate health status assessment of the running gear system. In this paper, a new data-driven model based on a slow feature analysis-support tensor machine (SFA-STM) is proposed to solve the problem of unknown interference and random noise by removing the slow feature with the fastest instantaneous change. First, the relationship between various statuses of the running gear system is analyzed carefully. To remove the random noise and unknown interferences in the running gear systems under complex working conditions and to extract more accurate data features, the SFA method is used to extract the slowest feature to reflect the general trend of system changes in data monitoring of running gear systems of high-speed trains. Second, slowness data were constructed in a tensor form to achieve an accurate health status assessment using the STM. Finally, actual monitoring data from a running gear system from a high-speed train was used as an example to verify the effectiveness and accuracy of the model, and it was compared with traditional models. The maximum sum of squared resist (SSR) value was reduced by 16 points, indicating that the SFA-STM method has the higher assessment accuracy.

APA, Harvard, Vancouver, ISO, and other styles

Lee, Chan Woo, and Dong Hyeong Lee. "Design Life Analysis of KTX Running Gear Systems on Various Operating Conditions." Key Engineering Materials 625 (August 2014): 674–77. http://dx.doi.org/10.4028/www.scientific.net/kem.625.674.

Full text

Abstract:

The maximum speed of KTX is 305 km/h for commercial service and it is designed to reach 330 km/h. The design fatigue life of KTX running gear systems is 20 years. The mileage per year of KTX train is 600,000 km/year. In other words, the design life of the KTX running gear systems is 12,000,000km. KTX train is designed to be dedicated to driving the high-speed railway. But the KTX train routes that connect with the conventional line and high-speed line service. South Korea’s high-speed railway design maximum speed is 350km/h. Comparison, speed KTX train existing line of service is set to 150km/h, 180km/h and 220km/h, depending on the section. Thus, the value of the maximum torque, torsional stress and bending moments acting on the KTX running gear systems may appear differently from the high-speed line design criteria. Furthermore, the maximum stress/strain acting on the suspension of parts of the running gear system is different. In this study, the actual KTX train to set running gear system design life compared to the actual life, according to the characteristics of the actual service routes were compared and analyzed.

APA, Harvard, Vancouver, ISO, and other styles

Weck, M., and G. Mauer. "Optimum Tooth Flank Corrections for Helical Gears." Journal of Mechanical Design 112, no. 4 (1990): 584–89. http://dx.doi.org/10.1115/1.2912650.

Full text

Abstract:

Growing requirements on the running behavior and the load carrying capacity of heavy-duty gears and furthermore, the expanding techniques in the field of gear manufacturing are demanding suitable designing methods for tooth flank corrections. In order to calculate these corrections the spatial stress and deformation state in the mesh is determined based on the finite element method. Calculated examples of corrected helical gears show that even simple geometric modifications of the flanks which do not require advanced manufacturing methods can improve the gear characteristics so that an increased transferable power and a reduction in noise emission can be expected.

APA, Harvard, Vancouver, ISO, and other styles

Walton, D., and Y. W. Shi. "A Comparison of Ratings for Plastic Gears." Proceedings of the Institution of Mechanical Engineers, Part C: Mechanical Engineering Science 203, no. 1 (1989): 31–38. http://dx.doi.org/10.1243/pime_proc_1989_203_083_02.

Full text

Abstract:

The failure mechanisms of plastic gears are examined and methods for calculating tooth bending and surface contact stresses for non-metallic gears are reviewed. The applications and limitations of the Lewis equation and Hertzian contact theory are considered and comparisons made between steel and plastic conditions, gear standards and various commercial rating practices for plastic gears. Special emphasis is laid on the British Standard BS 6168: 1987, the Polypenco rating method and ESDU 68001 for the design of non-metallic gears. A comparison is made between gears of different materials and material combinations, and for gears running under dry and oil-lubricated conditions. The effects of gear speed on ratings are briefly examined. As a result some shortcomings in the various rating methods are mentioned.

APA, Harvard, Vancouver, ISO, and other styles

Dhanasekaran, S., and R. Gnanamoorthy. "Gear tooth wear in sintered spur gears under dry running conditions." Wear 265, no. 1-2 (2008): 81–87. http://dx.doi.org/10.1016/j.wear.2007.08.025.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Mark, W. D. "Effects of Bearing Offset and Flexibility on the Mesh Force Distribution of Spiral Bevel Gears." Journal of Mechanisms, Transmissions, and Automation in Design 110, no. 2 (1988): 203–10. http://dx.doi.org/10.1115/1.3258927.

Full text

Abstract:

For straight or spiral bevel gears of nominal spherical involute design, the resultant total force vector transmitted by the gear mesh, in the absence of friction, lies in the plane of tooth contact. This force vector can be characterized by three scalar components, two orthogonal force components lying in the plane of contact and the resultant moment taken about the nominal center of the zone of contact. Equations for these three generalized force components are derived. The equations are expressed in terms of tooth pair/gear body stiffnesses, bearing/bearing support flexibility influence coefficients, the shaft input torque, deviations of the tooth running surfaces from perfect spherical involute surfaces, and bearing centerline offsets from the positions occupied by the base cone axes of the perfect involute bevel gear counterparts to the actual gears under consideration. Inertial forces arising from transverse and axial vibrations of the gear bodies are assumed to be negligible in comparison with the bearing support reaction forces.

APA, Harvard, Vancouver, ISO, and other styles

Irgashev, A., Sh A. Shaabidov, B. A. Irgashev, and N. A. Egamberdieva. "Roughness of meshing gear teeth." IOP Conference Series: Earth and Environmental Science 1112, no. 1 (2022): 012003. http://dx.doi.org/10.1088/1755-1315/1112/1/012003.

Full text

Abstract:

Abstract The article is devoted to the method of calculating some parameters of gear teeth roughness, taking into account the parameters of meshing gears under rolling friction conditions in the presence of relative sliding between the meshing gear teeth. A model for determining the running roughness of the surface of the teeth, which have the form of a truncated cone, based on the roughness model of the spherical form is obtained. The proposed calculation methods allow us to: calculate the depths of penetration of the run-in roughness to the surfaces of the mutually contacting gear teeth; establish the regularities of changes in the roughness parameters of the gear teeth surface depending on the contact parameters of the gear meshing and the load in the meshing. Determined the most probable correlation between the actual and nominal contact area, depending on the degree of relative slip, occurring between the gear teeth, in the zone of the actual contact area of the gear teeth, depending on the engagement module of the contacting gear teeth.

APA, Harvard, Vancouver, ISO, and other styles

Černe, B., Z. Bergant, R. Šturm, J. Tavčar, and D. Zorko. "Experimental and numerical analysis of laminated carbon fibre-reinforced polymer gears with implicit model for coefficient-of-friction evaluation." Journal of Computational Design and Engineering 9, no. 1 (2022): 246–62. http://dx.doi.org/10.1093/jcde/qwab083.

Full text

Abstract:

Abstract Laminated composites have so far received little attention as a potential material for gear drive applications. In the presented study, the thermomechanical performance of a newly developed type of epoxy impregnated, autoclave-cured carbon fibre-reinforced polymer gear—running in pair with a steel pinion—was analysed, using a combination of experimental and numerical approaches. The employed methods enabled the identification of the composite’s mechanical, thermal, and tribological characteristics, as related to the studied gear pair application. A newly proposed, finite-element-analysis-based iterative procedure enabled an implicit evaluation of the analysed material pair’s coefficient of friction (COF), which is a key parameter in determining the gear pair’s thermomechanical characteristics. For the considered material pair, a value of 0.34 was identified for the coefficient in the quasi-steady region. As the coefficient is strongly correlated with frictional heat generation and significantly affects the surface shear stress, it can consequently have a meaningful influence on the composite’s wear rate. The developed COF identification procedure was validated using a reciprocating cylinder-on-flat tribological test method. The composite gear’s service life was additionally tested at various running loads, resulting in pitch contact pressures ranging between 400 and 540 MPa. Lifetime gear test results showed a markedly superior performance compared to the high-temperature thermoplastic polyether ether ketone, which is typically employed in the most demanding polymer gear applications. Several methods are additionally proposed that could further improve the developed composite gears’ performance.

APA, Harvard, Vancouver, ISO, and other styles

Rohrmoser, Andreas, Christoph Bode, Benjamin Schleich, Hinnerk Hagenah, Sandro Wartzack, and Marion Merklein. "Influence of Metal Gear Tooth Geometry on Load and Wear within Metal-Polymer Gear Pairs." Applied Sciences 12, no. 1 (2021): 270. http://dx.doi.org/10.3390/app12010270.

Full text

Abstract:

Gear pairs made of the material pairing metal-polymer provide advantages, such as a reduced weight, beneficial damping properties and the possibility to be operated in dry running conditions. However, the service life of the pairing is limited due to wear. The properties of the metallic gearing have a significant influence on the wear behavior of the material pairing. From previous investigations, the influence of the surface topography and the flank hardness of the metal pinion is known. With regard to resource saving and efficient manufacturing of the metal pinion, cold forging offers benefits. Through cold forging, metallic gears for the material pairing can be produced ready-to-use in a process suitable for serial production. In order to enable manufacturing by extrusion, the application of gear radii is necessary. The gear radii significantly affect the extrusion process and the achievable gear properties. However, the influence of gear radii on wear within the metal-polymer material pairing has not yet been investigated. Within this contribution, the influence of the gear radii on the contact behavior as well as the resulting local load and wear of the tooth flank is determined. For this purpose, wear tests with aluminum (AlMgSi1) and steel (16MnCr5) gears with different gear radii within the pairing with polyamide (PA66) gears were performed. It has been shown that the local wear of the tooth flank can be attributed to the local load and that adjusted gear radii lead to a varying load and wear of the metal and polymer gears. Based on the findings, functional relationships regarding the choice of gear radii and the wear behavior are derived which can be applied in the design of cold forged gears.

APA, Harvard, Vancouver, ISO, and other styles

Padmanabhan, S., S. Sivasaravanan, and Karun Devasundaram. "A New Artificial Immune Algorithm for Solving Gear Design Problem." Applied Mechanics and Materials 766-767 (June 2015): 1003–8. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.1003.

Full text

Abstract:

The design of gears is critical for smooth running of any mechanism, automobile and machinery. Gear drive design starts with the need of optimizing the gear thickness, module, number of teeth etc., this creates huge challenges to a designer. Optimization algorithms are more flexible and gaining importance in engineering design problems, because of the accessibility and affordability of today’s mechanical field. A population based heuristic algorithm offers well-organized ways of creating and comparing a novel design solution in order to complete an optimal design. In this paper, a new artificial immune system based algorithm proposed as Modified Artificial Immune System (MAIS) algorithm is used to optimize a gear design problem. The results are compared with an existing design.

APA, Harvard, Vancouver, ISO, and other styles

Hecht, M. "European freight vehicle running gear: Today's position and future demands." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 215, no. 2 (2001): 1–11. http://dx.doi.org/10.1177/095440970121500201.

Full text

Abstract:

The running gear of most of the rail freight vehicles in operation today tends to be built to very old designs. The running gear for new freight rolling stock and, in particular, new types of bogie must have significantly improved performance if they are to satisfy the demands of all the stakeholders associated with the railways. Improved performance in this context means reduced inspection time and brake manipulation time in marshalling yards, lower weight, lower noise emissions and lower lateral track forces. All this can be achieved by new designs of bogie running gear, at little extra first cost and at lower whole life cost.

APA, Harvard, Vancouver, ISO, and other styles

A., G. Bhatkar. "PARAMETRIC DESIGN AND OPTIMIZATION OF A STANDARD SPUR GEAR WITH CIRCULAR FILLET USING FINITE ELEMENT METHOD." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES [NC-Rase 18] (November 22, 2018): 143–52. https://doi.org/10.5281/zenodo.1494024.

Full text

Abstract:

Gears are toothed cylindrical wheels used for transmittal mechanical power from one rotating shaft to a different and is one of the foremost important parts in a mechanical power gear. Due to their high degree of compactness and reliability it's expected that gears can predominate because the best suggests that of power transmission in close to future. Increase in demand for accurate and quiet power transmission in machines, generators and vehicles has resulted in the need for a lot of precise analysis of drugs characteristics. In auto business as lighter vehicles continue to be in demand, highly reliable and light-weight weight gears became necessary. Designing extremely loaded spur gears for power transmission systems that are each robust and quiet, requires analysis ways that will simply be enforced and conjointly give info on contact and bending stresses, along with transmission errors. Transmission error results due to two main factors i.e. manufacturing quality or mounting errors and elastic deflection underneath load. Hence, compensation for transmission errors by modifying gear teeth needs to be thought-about by gear designers. Transmission error is considered to be one the most contributors to noise and vibration in a gear set. If a pinion and gear have ideal involute profiles running with no loading torque they must in theory run with zero transmission error.

APA, Harvard, Vancouver, ISO, and other styles

Wang, Yanzhong, Kai Yang, and Wen Tang. "Prediction and test of stable transmission time of spiral bevel gear during a loss-of-lubrication event in helicopter transmission system." Industrial Lubrication and Tribology 74, no. 1 (2022): 111–17. http://dx.doi.org/10.1108/ilt-08-2021-0341.

Full text

Abstract:

Purpose This paper aims to establish a prediction model of stable transmission time of spiral bevel gear during a loss-of-lubrication event in helicopter transmission system. Design/methodology/approach To observe the temperature change of spiral bevel gear during working condition, a test rig of spiral bevel gear was developed according to the requirements of experiments and carried out verification experiments. Findings The prediction is verified by the test of detecting the temperature of oil pool. The main damage form of helicopter spiral bevel gears under starved lubrication is tooth surface burn. The stable running time under oil-free lubrication is mainly determined by the degree of tooth surface burn control. Originality/value The experimental data of the spiral bevel gear oil-free lubrication process are basically consistent with the simulation prediction results. The results lay a foundation for the working life design of spiral bevel gear in helicopter transmission system under starved lubrication.

APA, Harvard, Vancouver, ISO, and other styles

Reddy Mutra, Rajasekhara, D Mallikarjuna Reddy, M. Amarnath, M.N. Abdul Rani, M.A. Yunus, and M.S.M. Sani. "Artificial Neural Network-Based Fault Diagnosis of Gearbox using Empirical Mode Decomposition from Vibration Response." International Journal of Automotive and Mechanical Engineering 20, no. 3 (2023): 10695–709. http://dx.doi.org/10.15282/ijame.20.3.2023.12.0826.

Full text

Abstract:

This paper presents a gearbox defect diagnosis based on vibration behaviour. In order to record the vibration response under various circumstances, an industrial gearbox was used as the basis for an experimental setup. The signals resulting from gear wear were processed using an empirical mode decomposition for two operating time intervals (zero-hour running time and thirty-hour running time). The first three intrinsic mode functions and the corresponding frequency response were detected. The ten statistical parameters most sensitive to gear wear were selected using an evaluation method based on Euclidean distance. Using the identified features, an artificial neural network (ANN) was trained to track the gearbox for the selected future data set. The neural network received its input from the statistical parameters, and its output was the number of gearbox running hours. To achieve faster convergence, the radial basis function and the backpropagation neural network were compared. The superiority of the proposed strategy is demonstrated by comparing the performance of ANN. For monitoring the condition of industrial gears, the proposed strategy is found to be effective and trustworthy.

APA, Harvard, Vancouver, ISO, and other styles

Spitas, Vasilios A., Theodore N. Costopoulos, and Christos A. Spitas. "Optimum Gear Tooth Geometry for Minimum Fillet Stress Using BEM and Experimental Verification With Photoelasticity." Journal of Mechanical Design 128, no. 5 (2005): 1159–64. http://dx.doi.org/10.1115/1.2216731.

Full text

Abstract:

This paper introduces the concept of nondimensional gear teeth to be used in gear stress minimization problems. The proposed method of modeling reduces the computational time significantly when compared to other existing methods by essentially reducing the total number of design variables. Instead of modeling the loaded gear tooth and running BEA to calculate the maximum root stress at every iterative step of the optimization procedure, the stress is calculated by interpolation of tabulated values, which were calculated previously by applying the BEM on nondimensional models corresponding to different combinations of the design parameters. The complex algorithm is used for the optimization and the root stresses of the optimum gears are compared with the stresses of the standard gears for the same transmitted torque. Reduction in stress up to 36.5% can be achieved in this way. This reduction in stress has been confirmed experimentally with two-dimensional photoelasticity.

APA, Harvard, Vancouver, ISO, and other styles

Medwid, Marian, Wojciech Jakuszko, Krzysztof Łukaszewski, and Karol Bryk. "Rail running gear with friction-drum drive." Rail Vehicles, no. 1 (February 2, 2018): 35–44. http://dx.doi.org/10.53502/rail-138477.

Full text

Abstract:

Zaprezentowano koncepcję szynowego układu jezdnego z bębnowym, ciernym napędem rolek szynowego układu jezdnego, przeznaczonego do zastosowania w pojazdach szynowo – drogowych. Przedstawiono strukturę układu oraz rozkład sił w elementach nośnych konstrukcji. Przeprowadzono analizę porównawczą istniejących rozwiązań. Zaproponowano dalsze kierunki badań w tej dziedzinie.

APA, Harvard, Vancouver, ISO, and other styles

Tavkhelidze, David, and Zurab Mchedlishvili. "Force analysis of stair climber’s running gear." Works of Georgian Technical University, no. 2(516) (August 7, 2020): 110–16. http://dx.doi.org/10.36073/1512-0996-2020-2-110-116.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Nakajima, Kouji, Toshiki Hirogaki, Eiichi Aoyama, and Masaki Nagata. "Contact Analysis of Tooth Surface in Gear Meshing Based on Infrared Ray Imagery." Materials Science Forum 773-774 (November 2013): 563–72. http://dx.doi.org/10.4028/www.scientific.net/msf.773-774.563.

Full text

Abstract:

Improving accuracy ofthe gear tooth surface has become an important challenge, because the toothsurface accuracy greatly influences vibration of gears. However, for the spiralbevel gear, the tooth surface accuracy is considered to be very difficult toevaluate because the geometrical theory is difficult. Generally, the managementof tooth surface accuracy has conventionally been substituted by the toothsurface contact evaluation with red lead, which is a kind of paint. However,the results of visual examinations are too subjective. We therefore focused onthe infrared ray imagery to investigate the gear tooth meshing. In this research,a high response infrared thermography was used to estimate the tooth contact ofa hypoid gear under running conditions. Specifically, we looked at the increasein temperature on the tooth surface caused by gear meshing. The results clearlyshowed that the temperature was affected by load, sliding speed between toothsurfaces, and the average peripheral speed of tooth surface. We also proposedan equation that predicts tooth surface temperature rise and showed its utility.Thus, the proposed method effectively evaluates the tooth surface accuracy ofhypoid gear.

APA, Harvard, Vancouver, ISO, and other styles

MA, YONG, XIAOYAN NIU, LIN QIN, NAIMING LIN, XIANGYU ZHANG, and BIN TANG. "MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mo-MODIFIED Ti6Al4V SPUR GEAR." Surface Review and Letters 24, no. 03 (2017): 1750030. http://dx.doi.org/10.1142/s0218625x17500305.

Full text

Abstract:

In order to improve the performance of the Ti6Al4V (TC4) spur gear, a Mo surface modified layer is prepared by the plasma surface metallurgy technique. The element concentration, microstructure and elastoplastic properties are investigated with glow-discharge optical emission spectroscope (GDOES), scanning electron microscope, optical microscope (OM) and nanoindenter. Engaging with 41Cr4 steel gears, the wear resistances of the treated and untreated TC4 spur gears are evaluated through running-in and operation tests performed by a friction and wear tester under lubricated conditions. By finite element analysis, contact stress distributions in the TC4 and 41Cr4 spur gears pair are quantitatively determined. The results indicate that, being compact and uniform, the Mo-modified layer has higher hardness and retains relatively fine plasticity. The wear resistance of the treated TC4 spur gear is improved significantly.

APA, Harvard, Vancouver, ISO, and other styles

Deng, Gang, Masana Kato, Noboru Maruyama, Kunihiko Morikawa, and Nobuteru Hitomi. "Initial Temperature Evaluation for Flash Temperature Index of Gear Tooth." Journal of Tribology 117, no. 3 (1995): 476–81. http://dx.doi.org/10.1115/1.2831278.

Full text

Abstract:

In the AGMA standard for the scoring resistance evaluation of gears, flash temperature is used as an index indicating the risk of scoring. The flash temperature is expressed as the sum of flash rise of temperature and initial temperature. In this research, the initial temperatures are measured for various gear sets in running by thermocouples which are mounted just beneath the working surface of pinion. The effects of gear dimensions, rotating speed, and lubrication conditions on the initial temperature are clarified. An experimental formula is proposed for estimating the initial temperature, which depends on the temperature of oil inlet, the frictional power loss, and the running conditions such as rotating speed, contact position, and the oil supply rate. The estimated initial temperatures are in good agreement with the measured values. The proposed method is available for the scoring resistance evaluation of the vehicle transmissions.

APA, Harvard, Vancouver, ISO, and other styles

Pisula, Jadwiga. "Geometric analysis of injection-molded polymer gears (Rapid communication)." Polimery 66, no. 1 (2021): 56–62. http://dx.doi.org/10.14314/polimery.2021.1.8.

Full text

Abstract:

Properties of polymer gears were tested using coordinate measurement methods. This study is a follow-up to research on geometric accuracy of gears manufactured by injection molding. Spur gears were measured on a coordinate measuring machine running the GINA software by Klingelnberg. Measurement results were output in the form of measurement sheets which included values required in the DIN 3962 standard. The article also analyses the topography of test gear teeth. The topography was presented for a single tooth of the gear and determined on the basis of the measurements of 9 profiles distributed evenly over a specific profile assessment interval (interval Lα defined in the standard) and 7 tooth traces located within a relevant tooth trace assessment interval (interval Lβ defined in the standard). All gears tested in this study were placed outside accuracy class 12.

APA, Harvard, Vancouver, ISO, and other styles

Aulin, V., T. Zamota, A. Hrynkiv, S. Lysenko, O. Bondarets, and V. Yatsun. "Increase of formation efficiency of gears contact spot at electrochemical-mechanical running-in." Problems of Tribology 24, no. 94/4 (2019): 33–39. http://dx.doi.org/10.31891/2079-1372-2019-94-4-33-39.

Full text

Abstract:

The analysis of literature sources showed that gears are the most common types of mechanical gears. They are widely used in all branches of mechanical engineering, in particular in metal-cutting machines, cars, tractors, agricultural machines, etc. Among the many advantages of this type of gear, there are disadvantages, among which it is worth noting increased demands on precision manufacturing and Assembly, which results in a greater complexity of the collaborative process of finishing gears in view of their complicated shape and heavy-duty loads for contour and complex mode of interaction. This makes it particularly difficult to increase the durability when running gears. They require increased surface hardness, which is associated with small contact areas (in most cases-in line) and large specific loads. Even small distortions in this case lead to a significant complication of the process of their burn-in. The results of experimental studies have shown that for elimination of inaccuracies of form of details and errors of assembling mechanism expose to running-in which running- in of the surfaces take place. The most effective factor of acceleration of running-in is to use the combined processes at running- in surfaces. One of them is the electrochemical - mechanical running-in (ECMR)

APA, Harvard, Vancouver, ISO, and other styles

Zhang, J., and B. A. Shaw. "The Effect of Superfinishing on the Contact Fatigue of Case Carburised Gears." Applied Mechanics and Materials 86 (August 2011): 348–51. http://dx.doi.org/10.4028/www.scientific.net/amm.86.348.

Full text

Abstract:

The contact fatigue performance of two pairs of case carburised gears with either an as-ground or superfinished surface finish was studied. This comparison test was carried out using a back-to-back gear test rig. Test results showed that superfinished gears provided an enhanced contact fatigue resistance with only the development of minor scratches and light micropitting after running, while as-ground gears failed through a sequence of initial micropitting, progressive micropitting, macropitting and scuffing.

APA, Harvard, Vancouver, ISO, and other styles

Shen, Zhao Kui, and Xiao Lin Pan. "The Development of Graphic Design Method Based on Pro/Toolkit Spur Gears." Advanced Materials Research 328-330 (September 2011): 606–9. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.606.

Full text

Abstract:

Pro/Toolkit is the powerful secondary development provide of Pro/E ,It encapsulates many aimed at Pro/E bottom resources library function and call header files.Using VC++6.0 for integrated development environment and under Windows for development.This paper mainly introduces a graphic design method based on Pro/Toolkit spur gears.Firstly by using Pro/E to establish the spur gears 3d model and realize the 3d model parametric design. Then using VC++6.0 to type VC DLL program, design MFC dialog and for source program's compiles and links, to create dynamic link files(DLL or EXE files), through the registration documents and running applications.Finally realizes input gear parameters to get the corresponding gear effect in the dialog.Completed in VC++6.0 integrated development environment using Pro/Toolkit for forging spur gears graphic design. Got use Pro/Toolkit for straight tooth cylindrical gear and internal gear's secondary development interface.To avoid a lot of labor, meet different repeat and improv product design efficiency.

APA, Harvard, Vancouver, ISO, and other styles

Szpaczyńska, Daniela, and Marian Łopatka. "Analysis of the possibility of using rubber track systems in high-speed engineering machines. Part II. Technical limitations." Bulletin of the Military University of Technology 70, no. 1 (2021): 97–112. http://dx.doi.org/10.5604/01.3001.0015.6961.

Full text

Abstract:

The article presents problems and indicates limitations affecting the possibility of using rubber tracks in high-speed engineering machines. On the basis of the conducted analyzes, it was also indicated how to shape the running gear in such a way as to improve the working abilities of machines and minimize the disadvantages of rubber track systems. Keywords: mechanical engineering, elastomer tracks, running gear, high-speed engineering machines

APA, Harvard, Vancouver, ISO, and other styles

Meuleman, P. Klein, D. Walton, K. D. Dearn, D. J. Weale, and I. Driessen. "Minimization of transmission errors in highly loaded plastic gear trains." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 221, no. 9 (2007): 1117–29. http://dx.doi.org/10.1243/09544062jmes439.

Full text

Abstract:

Transmission errors (TEs) are an important source of unwanted noise and vibration in gear drives. Errors can result from geometrical inaccuracies and from elastic deformations. Plastic drives are often loaded in a way that produces high deflections relative to steel gears, and the elastic component of TE is relatively more important. Furthermore, plastic gears are often run in mesh with gears made from steel or other metals. In this case there is a large difference in tooth stiffness, which leads to unusual TE problems. The current paper discusses the origins of elastic TEs and means of their calculation. A simple beam model is used to demonstrate the stiffness of a pair of meshing gear teeth. A finite-element analysis is used to refine this model and to run iterative tooth meshing enabling TEs to be accurately characterized. A number of TE traces from gear pairs running under high loads are included and compared with the theoretical predictions. Several different scenarios are proposed including balancing gear tooth stiffness for dissimilar materials and the adjustment of pressure angle to account for tooth deflection. A set of design guidelines are presented in the conclusions. A case study of a precision printer drive is used to illustrate some of the techniques for the minimization of TEs.

APA, Harvard, Vancouver, ISO, and other styles

Mark, W. D. "Use of the Generalized Transmission Error in the Equations of Motion of Gear Systems." Journal of Mechanisms, Transmissions, and Automation in Design 109, no. 2 (1987): 283–91. http://dx.doi.org/10.1115/1.3267452.

Full text

Abstract:

The vibratory excitation arising from a gear pair is widely recognized to be a consequence of the nonuniform transmission of motion by the gear pair. In the preceding paper in this issue, it is shown that a three-component transmission error is required to describe the nonuniform transmission of motion by bevel gears for vibration excitation characterization purposes. The expression for the three-component transmission error derived in that paper is combined in the present paper with an analysis of the mesh forces and mesh elasticity to yield an equation of constraint involving the six degree-of-freedom unknown vibratory displacements of the gear shaft centerliners, the three unknown components of the generalized force transmitted by the mesh, and the geometric deviations of the tooth running surfaces from perfect involute surfaces which are assumed known. This matrix equation can be combined with the equations of motion of a gear system to predict the vibratory response of the system to the generalized transmission error excitation arising from meshing gear pairs within the system.

APA, Harvard, Vancouver, ISO, and other styles

Kong, Yiyi, Hong Jiang, Ning Dong, et al. "Analysis of Time-Varying Mesh Stiffness and Dynamic Response of Gear Transmission System with Pitting and Cracking Coupling Faults." Machines 11, no. 4 (2023): 500. http://dx.doi.org/10.3390/machines11040500.

Full text

Abstract:

The gear transmission system is an important part of the mechanical system, so it is essential to judge its running state accurately. To solve the difficult problem of identifying the components of coupling faults, this paper derives the calculation method of gear time-varying mesh stiffness for coupling faults of pitting and cracking based on the energy method and considering the coupling between teeth, establishes the dynamics model of two-stage gear transmission system with coupling faults and studies the influence of coupling faults on gear time-varying mesh stiffness and dynamic characteristics. The accuracy of the proposed method is verified by experiments. The results show that both pitting and cracking can lead to a reduction in mesh stiffness. The stiffness of pitting will fluctuate irregularly due to the influence of pitting on the tooth surface, while the stiffness of cracked teeth is relatively smooth. The coupling fault stiffness is dominated by more serious faults. By analyzing the periodic impact components in time domain and the sideband components around the harmonics in frequency domain the faulty gears in the transmission system can be distinguished. It provides an effective reference for the diagnosis of faulty gears.

APA, Harvard, Vancouver, ISO, and other styles

Chen, Ying Ying, Wen Jie Feng, Ying Yang, and Yong Du. "Numerical Simulation of Cold Heading and Extruding for Spiral Bevel Gear." Advanced Materials Research 139-141 (October 2010): 1202–5. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.1202.

Full text

Abstract:

This paper develops an opened forging and divided flow process for spiral bevel gears. By the help of rigid-plastic finite-element software DEFORM-3D, this paper designed cold-extruding part and concave die for bevel gear in the rear running gear of tri-motorcycle and simulated the forming process of cold-heading and extruding. On condition of guaranteeing shaping quality of teeth, the optimum diameter of die porthole was made sure by analyzing the effect of porthole size on volume of billet and plastic force. The experiment results show that the design parameter is reasonable and simulation results are helpful to the design of die.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!