Articles de revues : « Creo Simulate gear simulation »

1

Li, Zheng, et Yang Chen. « The Stress Analysis on Spur Gear Meshing Simulation ». Applied Mechanics and Materials 392 (septembre 2013) : 151–55. http://dx.doi.org/10.4028/www.scientific.net/amm.392.151.

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The gear meshing is a very complicated process due to the nonlinear behaviors during the teeth contact. It is necessary to build a reliable model to simulate gear meshing process which can consider geometry and boundary conditions nonlinear behavior in gear tooth contact analysis. This paper propose a 3D finite element model to simulate the meshing process of a pair of spur gears, and then carry out the gear tooth contact analysis with the consideration of nonlinear behaviors. The results and relevant discussions will indicate and explain some significant phenomena of the gear tooth contact characteristics in gear meshing process.

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Ma, Jun Gong, Zhong Zhi Wu, Hao Ran Guo et Jia Li. « Design and Simulation Study of a Certain Landing Gear Loading Simulation System ». Advanced Materials Research 871 (décembre 2013) : 69–76. http://dx.doi.org/10.4028/www.scientific.net/amr.871.69.

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The landing gear ground loading tests is a vital part before flight. As the motion of landing gear is three-dimensional motion,the traditional loading method cannot effectively simulate the pneumatic load on the ground. In order to simulate the load in the process of retraction/extension, a loading simulation system is proposed, including retractile system, position follow-up system and force servo loading system. This paper analyzes retraction/extension mechanism of the landing gear and builds up its mathematical model. A co-simulation model is developed in which the hydraulic system model and control system are built in software AMESim, the mechanical system of test platform model is built in software ADAMS. The results of the simulation confirm that the loading simulation system is feasible and provide the basis for building hardware platform.

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da Costa Neves, Carlos Guilherme, Aly Ferreira Flores Filho, Mateus Felipe Goettems et Pablo Augusto Machado Borges. « Pseudo direct drive simulation and analysis ». COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, n^o 5 (3 septembre 2018) : 1722–31. http://dx.doi.org/10.1108/compel-01-2018-0008.

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Purpose The purpose of this paper is to simulate a pseudo direct drive (PDD) by using permanent magnet arrays. Design/methodology/approach A 2D finite element model of the PDD was built. The static magnetic torque on air-gaps was obtained by Coulomb’s virtual work method using Ansys Maxwell software. To simulate the relative movement between input rotor and output rotor, two movement bands were applied. Findings The PDD’s torque relation was proved. The PDD simulated presents low cogging torque. Practical implications The manufacturing steps and materials applied in a construction of a coaxial magnetic gear, PDD’s main component, are presented. Originality/value The value of this paper is to present the numerical techniques applied to simulate a PDD and the manufacturing steps and materials applied in a construction of a coaxial magnetic gear.

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Jin, Shou-Song, Xiao-Tao Tong et Ya-Liang Wang. « Influencing Factors on Rotate Vector Reducer Dynamic Transmission Error ». International Journal of Automation Technology 13, n^o 4 (5 juillet 2019) : 545–56. http://dx.doi.org/10.20965/ijat.2019.p0545.

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The factors influencing rotate vector (RV) reducer dynamic transmission error were studied using virtual prototyping technology, which contained the elastic deformation, working load, part manufacturing error, and assembly clearance. According to the error transmission relationship of the RV reducer, 15 influencing factors were selected to design an orthogonal simulation test. The virtual prototype of the RV reducer was built using CREO and ANSYS, and imported into ADAMS for multi-body dynamics simulation. The simulation method reliability was verified via experiments. The results show that the circle center radius error of the pin gear, the amount of equidistant modification of the cycloid gear, the amount of radial-moving modification of the cycloid gear, the clearance between the support bushing and planet carrier, and the clearance between the crankshaft and the support bushing were positively correlated with the RV reducer dynamic transmission error. Among these, the circle center radius error of the pin gear has the greatest influence on the dynamic transmission error of the RV reducer followed by the amount of equidistant modification of the cycloid gear. The elastic deformation of the part and the load fluctuation show a certain gain effect on the transmission error, the elastic deformation of the cycloid gear has a great influence, and the elastic deformation of the pin gear has the least.

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Monkova, Katarina, Peter Monka, Jozef Tkac, Romana Hricova et Dusan Mandulak. « Effect of the Weight reduction of a Gear Wheel on Modal Characteristics ». MATEC Web of Conferences 299 (2019) : 03002. http://dx.doi.org/10.1051/matecconf/201929903002.

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The paper deals with the influence of gear weight reduction on its modal properties. The aim of thepaper is to use the simulation tools to introduce the dependence of natural frequencies on the change in the shape of the gear, which is reflected in the change in weight. At the beginning of the paper, the theory and experimental bases of vibration testing and analysis are introduced to understand the principles of modal parameter specification. Verification of the boundary conditions used in the simulation was performed using the experimental method and it is described in the next part of the article. Tests confirmed the consistency of the values achieved by both approaches. Thus, the same boundary conditions could be used to specify the dependence of natural frequencies on the change in the geometry ofthe gear (which is associated with weight reduction). Numerical analysis was performed by FEM analysisusing PTC Creo software. Experimental modal analysis was performed using a PULSE measurement system.

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Zhang, Lin Hai, Xiao Ye Qi, Jun Gong Ma et Rong Rong Yang. « The Load Simulation Research of Nose Landing Gear Steering ». Applied Mechanics and Materials 687-691 (novembre 2014) : 701–5. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.701.

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The nose landing gear is a vital component of an aircraft,which has an important impact on the safety of the aircraft.This paper studies the system of nose landing gear steering on the basis of the gear and rack mechanism durability test of a certain type of civil aircraft landing gear steering. Furthermore,it puts forward a method of passive loading,which can simulate the friction when the nose landing gear reciprocating turning,and establishes the mathematical model. The simulation results show that the simulator can meet the requirements of load,and laid a theoretical foundation for the subsequent actual work.

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Nallusamy, S., M. Rajaram Narayanan et S. Saravanan. « Investigation on Structural Steel and Silicon Carbide Aluminum Metal Matrix Composite Spur Gears Using PTC Creo and ANSYS 16.0 ». Materials Science Forum 937 (octobre 2018) : 33–41. http://dx.doi.org/10.4028/www.scientific.net/msf.937.33.

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In the field of Engineering and Technology, Gear is one of the most significant and essential component in mechanical power transmission system. General devices have major applications in various fields like automotives, industrial rotational machines, lifting devices, etc. Gears are usually subjected to fluctuating loads while in action. Gear tooth mainly fails due to excessive bending stress and excessive contact stress. Thus while designing the gear it is very necessary and vital to analyze the stresses induced in the gear for its safe operation. Weight reduction of gear is also one of the main design criteria as it has a great role in improving the efficiency of the entire system. Nowadays engineering components made up of composite materials and plastics find increasing applications. The components made by the composite materials provide reasonable mechanical properties with minimum weight. The objective of this research is to develop the spur gear and pinion assembly model using engineering simulation PTC Creo and imported to 3-D design software ANSYS workbench 16.0 for working on the static structural analysis. The analysis was carried out by considering different materials for gears like structural steel, polycarbonate and 20%AlSiC. From the observed results it was found that, 20%AlSiC composite material has mass reduction of about 45%, hence it is suitable for light weight applications.

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Chang, Shinn Liang, Chien Kai Huang, Khac Hiep Doan et Jia Hung Liu. « Serration Design and Simulation of Gear Plunge Shaving Cutter ». Applied Mechanics and Materials 376 (août 2013) : 377–82. http://dx.doi.org/10.4028/www.scientific.net/amm.376.377.

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Now, plunge shaving process is becoming a common method in gearing manufacture. Serration design and parameters adjustment for shaving cutter require considerable experiences and time. By combining Visual Basic and Solidworks API, this study proposes a new method to quickly simulate the shaving process and get final work gear profile easily.

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Sun, Li. « The Research and Practice of the Hydraulic Parts Assembly Three-Dimensional Animation Simulation ». Applied Mechanics and Materials 513-517 (février 2014) : 1660–63. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.1660.

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This paper introduces the three dimensional animation to simulate the CBKI gear pump assembly procedure with three dimensional manufacture software 3DMAX, AUTOCAD2000 and AE in which AUTOCAD2000 is used to create the gear pump line, 3DMAX is for modeling and AE is used to create the animation and post-processing. This paper mainly focuses on the scheme of the gear pump in the assembly which is from the design and manufacture to the final performance.

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Li, Yun, Yu Guo, Jun Guo, Xian Jun Yu et Yan Xue Liu. « Gear Fault Identification by Envelope Order Analysis Based on ADAMS Simulation ». Applied Mechanics and Materials 333-335 (juillet 2013) : 628–31. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.628.

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Due to the gear fault signal are often covered by complex noisy even under varying-speed running condition, and it is difficult to simulate the gear fault impact in practical work. To address the problem, a simulation scheme of gear fault is proposed in this paper. In the proposed approach, the gear fault model is built in UG at first. Subsequently, the model is imported in ADAMS, in which the meshing force instead of the vibration signal from a gearbox in real world is extracted, and then the envelope of the meshing force signal is extracted. Finally, the envelope order spectrum analysis scheme is used to obtain the feature order of gear faults. Simulation is conducted to verify the validity of the proposed method.

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Zhu, Yu Ming, et Hai Cheng Yang. « Computer-Aided Multi-Domain Unified Modeling and Simulation for Aircraft Landing Gear ». Advanced Materials Research 421 (décembre 2011) : 392–96. http://dx.doi.org/10.4028/www.scientific.net/amr.421.392.

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In order to model complex product systems and analyze their whole performance to deal with the coupling relationships between multi-domain，aircraft landing gear selected as the object, unified multi-domain modeling and simulation and for complex product systems was studied. The aircraft leading gear is decomposed as structure, and the mathematical models of the landing gear components are established. The model library of the landing gear components was developed using Modelica-based platform and multi-domain unified model of the landing gear was established. The impact work amount, the vertical load and the stroke are selected as the indexes to simulate and analyze the earthquake resistant performance of the shock absorber.

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Cao, Wei, et Rui Wang. « Modeling and Analysis of Gear Driving System Based on the CATIA ». Applied Mechanics and Materials 86 (août 2011) : 700–703. http://dx.doi.org/10.4028/www.scientific.net/amm.86.700.

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In this paper, CATIA was used to establish the parameterized model for gear driving system of reducer. The Assembly Design workbench was used to complete the virtual assembly and the DMU Kinematics module was adopted to simulate the movement of gear pair. Finally, finite element analysis was conducted by using Analysis &Simulation module to simulate the actual working condition of gear driving system, which verified the rationality of parametric model and the accuracy of calculation , at the same time, provided the reference data for failure analysis.

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Wang, Yong, Qing Jian Liu, Tai Yong Wang, Yu Long Wang, Zhi Qiang Yu, Jiang Deng et Jin Hai Huo. « Dynamics Simulation Analysis of Column for NC Bevel Gear Grinder ». Key Engineering Materials 693 (mai 2016) : 101–8. http://dx.doi.org/10.4028/www.scientific.net/kem.693.101.

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To avoid the influence of column vibration on machining precision, it is necessary to simulate the stiffness characteristics of the columns for CNC grinding machine, and to optimize the structure of the column by using sensitivity method. Based on structural characteristics of the grinding machine and structural characteristics of the columns, a finite element model is established to simulate and calculate the first-four models of the columns. In order to optimize the structure of the column, a sensitivity analysis is made to calculate the sensitivity of natural frequencies and mass of the column to each panel and ribbed plate. Considering a weighting factor and taking integrated natural frequency of the column as an optimization objective, the mass of the column as a constraint, an optimization equation is established. By a quadratic programming method, the parameter optimization of the column is got as follows: the mass decreased by 4%, integrated natural frequency increased by 2%. Dynamic stiffness of the column has been optimized by harmonic response analysis, the results showed that the largest column in the Z resonance peak reduced by 8.44%.

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Mou, Liu Chen, et Guang Fu Yin. « Power Train-Vehicle Modeling to Simulate Shifting Transients of Off-Highway Vehicles ». Advanced Materials Research 44-46 (juin 2008) : 415–20. http://dx.doi.org/10.4028/www.scientific.net/amr.44-46.415.

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Analytic modeling and analog computer simulation techniques are presented to determine the power train transient responses excited by clutch-actuated gear shifts. A method to describe the dynamics of a transmission arrangement having several clutches and interconnected planetary gear sets is considered in detail. Simulation model testing is directed toward optimizing system design parameters and evaluating power train component capability and vehicle shift-feel. Data reduction techniques applied to model responses of torque and speed will yield appropriate spectrums representative of simulated work cycle.

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Hong, Wei Bo, Ke Ping Zhang et Ya Ping Yao. « Numerical Simulation of the Influence of Gear Rotation Speed on the Gear Pump Flow Field ». Applied Mechanics and Materials 741 (mars 2015) : 232–36. http://dx.doi.org/10.4028/www.scientific.net/amm.741.232.

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Gear pump has simple structure, long service life, strong self-priming capacity, high working reliability and other characteristics, which is widely used in various kinds of mechanical equipment. In order to study the influence of gear rotational speed on the internal fluid flow field change rule, the computational fluid dynamics software Fluent was used to simulate the gear pump flow field, while dynamic grid technique was carried on the numerical simulation of the gear pump under different rotation speed, and flow field characteristics were analysed. The results showed that with the increase of gear rotation speed, the area of pump fluid velocity mutation decreased, the area of pressure mutation reduced, and the larger volume of fluid closed to balance.

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Fu, Yong Ling, Peng Zhang, Sheng Jun Li et Zhu Feng Li. « Drop Dynamic Simulation for Landing Gear via SimMechanics ». Advanced Materials Research 694-697 (mai 2013) : 77–83. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.77.

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To better reflect the dynamic performance of landing gear, a hybrid modeling method based on Matlab/SimMechanics is proposed as our approach and drop simulations were carried out for it to verify our approach. Firstly, a widely used levered-suspension landing gear is chosen as studying subject. Secondly, the mathematic models of the respective landing gear subsystem were established for the bumper and the tire, while braking control system was imposed via Simulink. Thirdly, SimMechanics was used to integrate all the subsystems into a comprehensive unit by taking advantage of its capability of showing the joint constraint, force reaction of each part, and on-line control law imposing. Lastly drop simulation tests were done on the landing gear model to verify its validity. The simulation results show that our approach can effectively simulate the drop feature, and accordingly provides a foundation for retrofit design in the next step, and thus makes it is valuable for real engineering applications.

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Li, Qing, Yu Guo et Tai Yong Wang. « Dynamic Contact Analysis of the Offset Face Gear ». Advanced Materials Research 189-193 (février 2011) : 1793–98. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1793.

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The face gear drive is a gear meshing drive with cylindrical gear and bevel gear. Because of its small space, high contact ratio, large transmission torque, low vibration and noise, not sensitive to the axial phase error of the worm and so on, face gear transmission is widely applied. In the traditional gear transmission dynamic contact analysis (TCA), first, simulate the meshing equation; second, calculate the contact trajectory that is formed by the adherent point; last, solve each of the instantaneous contact areas and solve tooth contact region in meshing process. But it can’t solve the tail, diamond and other high contact defects. In the real mesh transmission, tooth meshing is very complex, including edges contact, multi-tooth engagement and many other issues. With the progress of the times, using finite element analysis software ANSYS, it will be able to simulate the dynamic contact analysis of the gear. In this paper, the offset face gear as the research object, with MATLAB program, Solidworks and ANSYS software, establish the mathematical model of the orthogonal offset face gear, simulate its geometric model in the three-dimensional software. Finally, implement the simulation of its dynamic contact meshing in the finite element analysis software.

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Liu, Qing Li, Lei Shen, Albert Tsai, Su Fen Yao et Edmund Wang. « The Parametric Simulation Design Method of Conjugate Cams of Automatic Pin Insertion Machine Based on Creo Parametric Software ». Applied Mechanics and Materials 236-237 (novembre 2012) : 1201–4. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.1201.

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Cam mechanisms are widely used in automated machines. Conjugate cams have become popular for its eminent kinematics and dynamic performance in research and in industry. As a commonly used cam mechanism in industry, especially in automatic pin insertion machines, conjugate cams have the advantages of being highly efficient, highly accurate and relatively cheap. A parametric simulation method was used to create a conjugate cam profile. This paper describes the steps used to create 3D models of the conjugate cam and the basic principles used to simulate the motion of cam mechanisms. The motion simulations were done with the parametric 3D modeling method using Creo Parametric Software.

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Cai, Gai Pin, Xiao Hui Zhao et Hong Tao Su. « The Finite Element Simulation Used in Straight Tooth Bevel Gear’s Vibration Rotary Forging ». Advanced Materials Research 430-432 (janvier 2012) : 1716–20. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1716.

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Vibration rotary forging is a complex precision forming process. In the forming process, the addition of the vibration make the boundary condition and the friction condition of the gear blank and the mould changed with the rotation of the head, which lead the forming process of the spur bevel gears become more complicated. Using the rigid-plastic finite element method to study the metal flow law and the stress distribution of the gear blank during the forming process of the spur bevel gears. Using the DEFORM-3D finite element analysis software to simulate and analysis the forming process of the spur bevel gear, in order to get the forming law of the bevel gear during the different type of the vibration parameters.

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E, Jia Qiang, Guang Ming Li, Bin Zhang et Jiang Dong Dong. « Fatigue Simulation and Analysis on Planetary Gear of Megawatt Wind Power Yaw Reducer ». Advanced Materials Research 455-456 (janvier 2012) : 180–86. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.180.

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The new type wind power yaw reducer has been virtually assembled in Pro/E for the operating conditions of the Megawatt wind power yaw reducer. The planetary gear contact model of the new type wind power yaw reducer has been built to simulate the change of the contact stress in the process of planetary gear operation with the interface of Pro/E and ANSYS. The results show that: the initial maximum contact stress of the meshing planetary gear is 395MPa and the maximum stress in the engagement process is 460MPa, but it is still less than the material yield limit of the planetary gear. The results also show that the fatigue life of the gear teeth is 125,800 times, the cumulative fatigue factor is 0.72501 by analyzing the fatigue loads and 42CrMo’s S-N curve of Megawatt wind power yaw drive planetary gear, so it can meet the design and operation requirements for the Megawatt wind power yaw reducer.

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Li, Yong Xiang, Wen Quan Shen, You Jia Zhao et Xiu Yang Hu. « Gear Modification Analysis to Improve the Vibration and Noise of Automobile Transmission ». Key Engineering Materials 579-580 (septembre 2013) : 265–69. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.265.

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As to the practical problems of vibration and noise of automobile transmission, this paper focuses on the gear pair of automobile transmission as the research object to realize the gear meshing analysis with the software MASTA. Through establishing the simulation model of the automobile transmission to simulate the actual load condition, the process analysis of comprehensive intelligent gear modification is carried on. Finally, the reasonable modification results indicate that the simulation analysis recurring to the professional software can obtain the modified gear of the automobile transmission more suitable to the engineering application, which will provide good guidance for the development and application of new transmission gear in the future and lay the research foundation to reduce the vibration and noise of the transmission based on the gear modification method.

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Liu, Bao Long, Jie Hong, Da Yi Zhang et Yan Hong Ma. « Fatigue Failure Analysis of a Minitype Straight Bevel Driven Gear ». Advanced Materials Research 622-623 (décembre 2012) : 605–10. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.605.

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In the presented paper, the failure mechanism of 12Cr2Ni4A minitype straight bevel gear was analyzed by means of both experimental characterizations and numerical simulation techniques. Fractography and simulation were conducted to find the failure mechanism. 3D finite element models (FEMs) of the driven gear with different structure parameters were constructed and used to simulate the inherent characteristic and stress field in the tooth root. Fractography indicated that teeth of the straight bevel driven gear failed because of high cycle fatigue (HCF). Simulation results showed no resonance but stress concentration in the tooth root. It was concluded that this failure occurred due to high cycle fatigue (HCF) and high stress concentration caused by small tooth root fillet radius.

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Nguyen, Xo Van. « Design calculations and simulation dynamics of banana screen ». Journal of Mining and Earth Sciences 61, n^o 2 (29 avril 2020) : 50–57. http://dx.doi.org/10.46326/jmes.2020.61(2).06.

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The banana screen is a device used to classify materials widely used in screenings factories at home and abroad. It's working ability depends on many factors (kinematic parameters, technological parameters, particle size, and material moisture,...). If using the traditional method to determine suitable parameters to reach high efficiency, it is very difficult. Because the calculated results are not accurate, it takes a designer much time and makes the manufacturing cost increase. In this study, the author uses the computer software CREO, ADAMS, ANSYS to design and simulate the dynamics of the screen. The results of study are the dynamic parameters of the screen during the working time and are shown in different graphs (Elastic pillow deformation of spring; the force exerted on the elastic pillow; the center velocity of vibration box; center acceleration of vibration box; static energy of vibrates box; translational momentum of vibration box; moment momentum of vibration box). These results also can be applied to design banana screens, which have a high capacity and efficiency as well as a long lifetime.

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Wang, Chin Yu, et Hsin Te Wang. « On Numerical Simulations of the Micro-Gears and their Cold Forging Process ». Key Engineering Materials 419-420 (octobre 2009) : 17–20. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.17.

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In this paper, a parametric cubic spline function for generating gear profile is proposed. The spline function includes new gear design parameters such as pressure angle, number of teeth, module, and tooth tip circle modification. The proposed geometry can improve corner filling condition. Finally, the simulation software DEFORM is used to simulate the cold forging process of the micro-gears with different profiles.

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Zeng, Cheng, Dong Bo Yang, Li Liu et Feng Tian Cai. « Modeling and Simulation Research on the Effect of Driving Skills on Vehicle Fuel Efficiency ». Advanced Materials Research 512-515 (mai 2012) : 1167–73. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1167.

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The research and application of eco-driving has the important practical significance for the energy conservation and emission reduction of automobile industry. In this paper, a simulation model has been set up based on GT-Suite and mathematical models of driving operations to simulate three typical driving operations. The results show that the acceleration speed plays important role in the acceleration operation. As the acceleration speed increases, fuel economy significantly deteriorates. In the transmission operation, the engine should not be operated in the high speed region. Otherwise, the fuel economy would deteriorate. In the cruise operation, the gear should be selected to matching the speed. High-gear low speed operation will cause safety problems, while low-gear high-speed operation will cause significantly deterioration of fuel economy.

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Shih, Yi-Pei, Zhang-Hua Fong et Grandle C. Y. Lin. « Mathematical Model for a Universal Face Hobbing Hypoid Gear Generator ». Journal of Mechanical Design 129, n^o 1 (17 mai 2006) : 38–47. http://dx.doi.org/10.1115/1.2359471.

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Based on the theory of gearing and differential geometry, a universal hypoid generator mathematical model for face hobbing spiral bevel and hypoid gears has been developed. This model can be used to simulate existing face hobbing processes, such as Oerlikon’s Spiroflex© and Spirac© methods, Klingelnberg’s Cyclo-Palloid© cutting system, and Gleason’s face hobbing nongenerated and generated cutting systems. The proposed model is divided into three modules: the cutter head, the imaginary generating gear, and the relative motion between the imaginary generating gear and the work gear. With such a modular arrangement, the model is suitable for development of object-oriented programming (OOP) code. In addition, it can be easily simplified to simulate face milling cutting and includes most existing flank modification features. A numerical example for simulation of the Klingelnberg Cyclo-Palloid© hypoid is presented to validate the proposed model, which can be used as a basis for developing a universal cutting simulation OOP engine for both face milling and face hobbing spiral bevel and hypoid gears.

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Kong, Long, Zhong Da Wang, Xiao Yu Wang et Ji Xin Wang. « Dynamic Contact Analysis of Power Spilt Device in Energy Coupling and Decoupling ». Applied Mechanics and Materials 448-453 (octobre 2013) : 3154–57. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.3154.

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Power Spilt Device (PSD) is the key power component of Hybrid Electric Vehicle (HEV), and it affects dynamic performances and fuel consumption of HEV. The dynamic contact analysis of PSD gear train is difficult, as it is time-consuming and complex to set calculation parameters. This paper presents a method for dynamic contact analysis of PSD gear train using ABAQUS software. Three working conditions are chosen to simulate the dynamic contact pressure. The work in this paper provides an effective simulation method for obtaining dynamic contact characteristics of PSD gear meshing.

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Wu, Xiongxi, Qifeng Gao et Zesong Li. « Mathematical and Finite Element Modeling of Micro-Modification for Marine Gear ». International Journal of Rotating Machinery 2015 (2015) : 1–7. http://dx.doi.org/10.1155/2015/902941.

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Based on the computer simulation technique, this paper used the professional gear design software MASTA and finite element software ANSYS combined with the method of gear micro-modification to redesign the gear profile and eventually realized the optimization design of gear micro-modification. Then the gear transmission model of one-level reducer was established to simulate and analyze the contact equivalent stress, transmission error, and meshing impact before and after gear modification. By comparing the simulations results it is found that gear micro-modification can lower meshing impact load, reduce the vibration strength, make gear transmission steady, and improve the gear bearing capacity. By comparing the transmission error curves and meshing impact load curves before and after gear micro-modification, this helps to understand the effects of gear micro-modification on the gear transmission and provides basis references for the future redesign of the marine gears with high strength and long service life.

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Bouzakis, K. D., S. Kombogiannis, A. Antoniadis et N. Vidakis. « Gear Hobbing Cutting Process Simulation and Tool Wear Prediction Models ». Journal of Manufacturing Science and Engineering 124, n^o 1 (1 mars 2001) : 42–51. http://dx.doi.org/10.1115/1.1430236.

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Gear hobbing is an efficient method to manufacture high quality and performance toothed wheels, although it is associated with complicated process kinematics, chip formation and tool wear mechanisms. The variant cutting contribution of each hob tooth to the gear gaps formation might lead to an uneven wear distribution on the successive cutting teeth and to an overall poor tool utilization. To study quantitatively the tool wear progress in gear hobbing, experimental-analytical methods have been established. Gear hobbing experiments and sophisticated numerical models are used to simulate the cutting process and to correlate the undeformed chip geometry and other process parameters to the expected tool wear. Herewith the wear development on the individual hob teeth can be predicted and the cutting process optimized, among others, through appropriate tool tangential shifts, in order to obtain a uniform wear distribution on the hob teeth. To determine the constants of the equations used in the tool wear calculations, fly hobbing experiments were conducted. Hereby, it was necessary to modify the fly hobbing kinematics, applying instead of a continuous tangential feed, a continuous axial one. The experimental data with uncoated and coated high speed steel (HSS) tools were evaluated, and correlated to analytical ones, elaborated with the aid of the numerical simulation of gear hobbing. By means of the procedures described in this paper, tool wear prediction as well as the optimization of various magnitudes, as the hob tangential shift parameters can be carried out.

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Tang, Jia Li, Chen Rong Huang et Jian Min Zuo. « Gear Fault Diagnosis with Support Vector Machine ». Advanced Materials Research 455-456 (janvier 2012) : 1169–74. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.1169.

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Because of the complexity of gear working condition, there are non-linear relationship between characteristic parameters and fault types. This paper proposes to apply the Support Vector Machine to set up the nonlinear mapping to solve the difficulties of gear fault diagnosis. Taking a certain gearbox fault signal acquisition experimental system for instance, Matlab software and its neural network toolbox are used to model and simulate. The simulation result shows the founded model has preferable learning and generalization capabilities, which performs effectively in the common gear fault diagnosis and it can identify various types of faults stably and accurately.

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Slivinskas, Kastytis, V. Gičan, A. J. Poska et Vytautas Kazimieras Augustaitis. « Analysis of the Possibilities of the Usage of Electrical Synchronous Link for a CNC Gear Hobbing Machine ». Solid State Phenomena 113 (juin 2006) : 97–102. http://dx.doi.org/10.4028/www.scientific.net/ssp.113.97.

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The method of creating the dynamical model of the CNC gear hobbing machine and for its analyzing is presented in this paper. The model comprises detail mechanical parts of the hob spindle and work spindle axes, their electrical counterparts, linking, and allows one to investigate dynamic characteristics of the machine and to simulate processes, which take place during gear hobbing. The article also presents the simulation diagram, introducing these axes and the third axis, which help to model the cutting process. It also presents results of simulation of processes during hobbing and amplitude-frequency characteristics calculated.

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Wang, Yong, Lin Zhao et Jin Bao Kou. « Virtual Machining of Spiral Bevel Gear Based on VERICUT ». Advanced Materials Research 199-200 (février 2011) : 1885–89. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.1885.

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Spiral bevel gear milling machine is one typical representative of complex manufacturing equipments. In order to simulate spiral bevel gear cutting, a five-axis virtual CNC gear cutting machine under VERICUT software is established in this paper. Based on a spiral bevel gear generating theory, the surface forming of the spiral bevel gear is studied by using coordinate transformation method in spatial kinematics, and the G-code required by actual gear cutting is generated. Then, according to the properties of the general five-axis CNC system, the machine model and the relevant configuration parameters under VERICUT is created, so the spiral bevel gear virtual NC machining system is set up. Finally, the cutting simulation and crash examination are accomplished under VERICUT. By using this method, the accuracy of the bevel gear cutting system based on a general five-axis CNC can be well verified.

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Zhang, Li, et Cai Jun Xue. « A Landing Gear Drop Dynamic Simulation Based on the LMS. Virtual. Lab ». Applied Mechanics and Materials 55-57 (mai 2011) : 684–87. http://dx.doi.org/10.4028/www.scientific.net/amm.55-57.684.

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In order to evaluate the dynamic behavior of the buffer of the Seagull 300 aircraft’s main landing gear, a drop model is built to simulate the drop dynamics using the software of LMS Virtual Lab Motion. The fluid damping force of the buffer, the air spring force of the buffer, the tire force of the landing gear and the weight of the fuselage are considered in the model. The simulation results are compared with the results of the Seagull 300 landing gears drop test, which proves the accuracy of the simulation model. Then the buffer performance and its influence factors are computationally discussed. This method gives a new way to study and improve the performance of the buffer system of an aircraft.

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Aziz, Ismail Ali Bin Abdul, Daing Mohamad Nafiz Bin Daing Idris, Mohd Hasnun Arif Bin Hassan et Mohamad Firdaus Bin Basrawi. « Finite Element Analysis of Impact Energy on Spur Gear ». MATEC Web of Conferences 225 (2018) : 06011. http://dx.doi.org/10.1051/matecconf/201822506011.

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In high-speed gear drive and power transmission, system impact failure mode always occurs due to the sudden impact and shock loading during the system in running. Therefore, study on the amount of impact energy that can be absorbed by a gear is vital. Impact test equipment has been designed and modelled for the purpose to study the impact energy on gear tooth. This paper mainly focused on Finite Element Analysis (FEA) of impact energy that occurred during simulation involving the impact test equipment modelling. The simulation was conducted using Abaqus software on critical parts of the test equipment to simulate the impact event and generate impact data for analysis. The load cell in the model was assumed to be free fall at a certain height which gives impact load to the test gear. Three different type of material for the test gear were set up in this simulation. Results from the simulation show that each material possesses different impact energy characteristic. Impact energy values increased along with the height of load drop. AISI 1040 were found to be the toughest material at 3.0m drop that could withstand up to 44.87N.m of impact energy. These data will be used to validate data in physical experiments in further study.

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Peng, De Qi, Wei Qiang Wang, Tian Lan Yu, Biao Wei, Yu Zhou et Jia Shi Tang. « 3D Numerical Simulation of Fluid Flow and Heat Transfer for Asymmetric Spiral-Gear Inserts in a Tube ». Applied Mechanics and Materials 130-134 (octobre 2011) : 1686–90. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.1686.

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For solving cleaning fouling online for shell-and-tube heat exchanger，an asymmetric spiral-gear cleaning technology is presented. The RNGk-εturbulent model is used to simulate the fluid flow and heat transfer of the tube with the spiral-gear. Its velocity and turbulent intensity field, convection heat transfer characteristic and resistance property are analyzed. Numerical simulation results shows that radial velocity is larger in the annular area near the tube wall than that in the smooth tube. Tangential velocity in the diameter area corresponding to the width of spiral-gear insertion increases with radius，but it decreases with radius in the annular clearance between the insert and the tube wall. However, fluid tangential motion of the smooth tube is only stochastic，and its tangential velocity is lower several orders of magnitude than that for the tube with the insertions. The average surface heat transfer coefficient of the spiral-gear-inserted tube wall is increased nearly 88% than that from the smooth tube wall. In addition, the pressure drop caused by spiral-gear inserts is in the permissible range of engineering application. The inserts is applicable to the heat exchangers at a flow rate lower than 0.8 m·s-1.

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Pecora, Rosario. « A Rational Numerical Method for Simulation of Drop-Impact Dynamics of Oleo-Pneumatic Landing Gear ». Applied Sciences 11, n^o 9 (30 avril 2021) : 4136. http://dx.doi.org/10.3390/app11094136.

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Oleo-pneumatic landing gear is a complex mechanical system conceived to efficiently absorb and dissipate an aircraft’s kinetic energy at touchdown, thus reducing the impact load and acceleration transmitted to the airframe. Due to its significant influence on ground loads, this system is generally designed in parallel with the main structural components of the aircraft, such as the fuselage and wings. Robust numerical models for simulating landing gear impact dynamics are essential from the preliminary design stage in order to properly assess aircraft configuration and structural arrangements. Finite element (FE) analysis is a viable solution for supporting the design. However, regarding the oleo-pneumatic struts, FE-based simulation may become unpractical, since detailed models are required to obtain reliable results. Moreover, FE models could not be very versatile for accommodating the many design updates that usually occur at the beginning of the landing gear project or during the layout optimization process. In this work, a numerical method for simulating oleo-pneumatic landing gear drop dynamics is presented. To effectively support both the preliminary and advanced design of landing gear units, the proposed simulation approach rationally balances the level of sophistication of the adopted model with the need for accurate results. Although based on a formulation assuming only four state variables for the description of landing gear dynamics, the approach successfully accounts for all the relevant forces that arise during the drop and their influence on landing gear motion. A set of intercommunicating routines was implemented in MATLAB® environment to integrate the dynamic impact equations, starting from user-defined initial conditions and general parameters related to the geometric and structural configuration of the landing gear. The tool was then used to simulate a drop test of a reference landing gear, and the obtained results were successfully validated against available experimental data.

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Shen, Wang Hao, Long Kong, Zhong Da Wang, Chao Xu et Ji Xin Wang. « Thermal-Mechanical Coupling Analysis of Power Spilt Device Gear Train ». Applied Mechanics and Materials 448-453 (octobre 2013) : 3115–18. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.3115.

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Power Spilt Device (PSD) is the key power component of Hybrid Electric Vehicle (HEV). It is very important to simulate and analyze the temperature field and stress field of PSD gear train. The thermal-mechanical coupling analysis is difficult, as it involves the interaction between temperature field and stress field. This paper presents the process of the thermal-mechanical coupling simulation in ABAQUS, and tooth surface temperature and contact stress are obtained and analyzed.

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Wang, Hong, Fu Jin Yu, Kai Long Huang, Yong Xiang Li et Wen Quan Shen. « Gear Strength Optimization Analysis of Automobile Gearbox Based on the Software of MASTA ». Key Engineering Materials 579-580 (septembre 2013) : 216–19. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.216.

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Automobile gear, as key part of automobile gearbox, bears the torque of automobile transmission, whose strength will directly affect the transmission efficiency of automobile gearbox and the service life of transmission system. On the basis of gear transmission theory, This paper focuses on gear pair of an automobile transmission as the research object, with the help of the professional transmission system software of MASTA, to realize the gear meshing analysis of the automobile gearbox, establish the simulation model of the automobile gearbox, simulate the actual load condition to complete the process analysis of the gear transmission. Finally, the strength optimization analysis of gear pair is implemented to obtain the reasonable gear design, which is more close to the gear meshing transmission process. There are great benefits to improve the overall performance of the automobile gearbox, effectively reduce the test cost, shorten development cycle, and optimize product structure. Therefore, it will provide guidance for the development and application of new transmission gear in the future, and present a new perspective and approach for the optimization analysis of gear strength.

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Li, Cheng, Chang Hua Qiu et Nian Li Lu. « Dynamic Response of Marine Gear under External Impact Load ». Advanced Materials Research 430-432 (janvier 2012) : 1597–601. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1597.

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In order to determine the anti-shock performance of marine gear, dynamic model of gear-rotor-bearing system under external load is established. On the base of Hertz contact theory, the mathematical model of maximum stress response of the gear tooth contact area is developed and the typical shock spectrum was transferred to double peaks and triangle wave to simulate the process of base excitation. By simulating different impact pulse width and acceleration peak value, the programming result is in good agreement with Finite-Element simulation. The study considers that the bearing oil film can absorb impacting load and Information on stress response of gear contact area under external load could offer references for the design of marine gearbox to enhance the resistance to underwater shock damage.

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Guo, Rui, Yongtao Li, Yue Shi, Hucheng Li, Jingyi Zhao et Dianrong Gao. « Research on Identification Method of Wear Degradation of External Gear Pump Based on Flow Field Analysis ». Sensors 20, n^o 14 (21 juillet 2020) : 4058. http://dx.doi.org/10.3390/s20144058.

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As a kind of hydraulic power component, the external gear pump determines the performance of the entire hydraulic system. The degradation state of gear pumps can be monitored by sensors. Based on the accelerated life test (ALT), this paper proposes a method to identify the wear degradation state of external gear pumps based on flow field analysis. Firstly, the external gear pump is theoretically analyzed. Secondly, dynamic grid technology is used to simulate the internal flow field of the gear pump in detail. Finally, the theoretical and simulation results are verified by the ALT. The results show that this method can effectively identify the wear degradation status of four sample pumps. The results of the work not only provide a solution to the research on the wear degradation of external gear pumps, but also provide strong technical support for the predictive maintenance of hydraulic pumps.

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Nandurkar, Rahul Dilip, Akash Mohanty et P. Barath. « Design and Simulation of Automotive Seat Height Adjuster Driving Mechanism Based on Multi-Body Dynamics ». Applied Mechanics and Materials 592-594 (juillet 2014) : 2282–86. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.2282.

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The paper presents a technique to simulate driving mechanism in automotive seat height adjuster. Simulation is done using multi-body dynamic software ADAMS. The exercise included development of an accurate model using design tool. The design model is then converted to simulation tool. Selected operating force is applied and simulated. The area of focus is forces between two gear meshing parts. Simulation result is then compared with analytical calculation. Validation is also made for the considered factor of safety.

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Li, Guoyan, Fangyi Li, Haohua Liu et Dehao Dong. « Fault features analysis of a compound planetary gear set with damaged planet gears ». Proceedings of the Institution of Mechanical Engineers, Part C : Journal of Mechanical Engineering Science 232, n^o 9 (27 avril 2017) : 1586–604. http://dx.doi.org/10.1177/0954406217705906.

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The fault properties of compound planetary gear set are much more complicated than the simple planetary gear set. A damaged planet will induce two periodic transient impulses in the raw signals and generates modulation sidebands around the mesh harmonics. This paper aims to investigate the fault properties of a compound planetary gear set in damaged planet conditions. A dynamic model is proposed to simulate the vibration signals. The time interval between the fault-induced close impulses in the time domain is used as a significant feature to locate the faulty planet. Considering the phase relations, the time-varying mesh stiffness is obtained. Then, the fault properties are demonstrated in the simulation, and the theoretical derivations are experimentally verified.

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Kweh, C. C., M. J. Patching, H. P. Evans et R. W. Snidle. « Simulation of Elastohydrodynamic Contacts Between Rough Surfaces ». Journal of Tribology 114, n^o 3 (1 juillet 1992) : 412–19. http://dx.doi.org/10.1115/1.2920900.

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The paper describes the results of an elastohydrodynamic lubrication (EHL) analysis of an elliptical contact between a rough, stationary surface and a smooth, moving surface. The roughness consists of two-dimensional grooves/ridges aligned in a direction perpendicular to that of lubricant entrainment, and is sinusoidal in profile with two scales of wavelength and amplitude. The main feature of these results is the significant degree of asperity deformation and corresponding ripple in the pressure distribution. Also presented are preliminary results of a line contact EHL analysis in which profiles from real surfaces are used to simulate the lubrication of gear teeth at high temperatures. These results show significantly less proportional reduction of roughness due to asperity deformation.

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Xu, Feng, Ke Min Xue, Ping Li, Dong Mei Gong, Gang Chao Wang et Wen Chao Shi. « Simulation and Experiment of Cold Forging for Spur Gear Based on Local Loading ». Advanced Materials Research 268-270 (juillet 2011) : 241–46. http://dx.doi.org/10.4028/www.scientific.net/amr.268-270.241.

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The cold closed-die forging of spur gears brings the problems of great forming forces , low life of the dies and insufficent corner filling. The two-step forming technology is presented. First, the billet is pre-forged by closed-die forging for getting most of tooth profile. Second, the gear is finish-forging by local loading. The finite element method is used to simulate the cold forging process.The strain distributions, the stress distributions, velocity distributions and load-stroke curve are investigated.. The simulation results show that the technology can guarantee the full filling effect, and decrease the forming force remarkably. The results of simulation and analysis were verified by the physics experiment.

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Lu, Ya Guo, Guo Zhe Ren et Jian Ping Hu. « Numerical Simulation for Feed-Oil Pump of Aero-Engine ». Applied Mechanics and Materials 510 (février 2014) : 193–96. http://dx.doi.org/10.4028/www.scientific.net/amm.510.193.

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With reference to cavitation phenomena in the feed-oil pump of aero-engine, a numerical method is presented in this paper to analyze operating performance of pump. Local re-meshing model is introduced to update the computational mesh when the gear teeth in mesh depart each other. Also, the full cavitation model is applied to simulate the flow field, the mass transfer between oil and vapor at low pressure producing region. The performance of a typical feed-oil pump is predicted to evaluate the altitude influence. Results show that more oil vapor is produced at higher altitude. Meanwhile, the leakage mass is mainly depended on the pressure drop.

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Sanni, Olalekan Abdulrahim, et Sunday Ayoola Oke. « Analysis on Nylon 6/6 Camshaft Gear Temperature Simulation In A 1.1 Kva Elepaq Generator Using Inventor and ANSYS ». International Journal of Mechanical Engineering Technologies and Applications 2, n^o 2 (2 juillet 2021) : 161. http://dx.doi.org/10.21776/mechta.2021.002.02.10.

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<p class="02abstracttext">Camshaft gear temperature simulations are presently crucial as they offer a distinctive visual account of the temperature profile within the generator, they permit superior manufacturing assessment and the design of heat-resistant camshaft gear with high performance and low cost. However, available information to designers is inadequate as they omit the approximate global maximum temperature, particularly for the nylon 6/6 camshaft gear in a 1.1 kVA elepaq generator. In this article, the idea is to simulate and account for the global minimum and maximum temperature using the Inventor and ANSYS software. The stress-induced on the generator was considered. The results of the simulation revealed an approximate global maximum temperature of the nylon 6/6 camshaft gear as 37°C max with 22°C min. Furthermore, the global minimum at 35°C max with 21°C min was considered. Besides, the structural steel global maximum of 38°C max, 25°C min and global minimum 35°C max, 24°C min. The stress values did not exceed 0.1419 MPa on ANSYS but the ANSYS revealed that the camshaft gear strain was within safe limits. The simulation approach predicts the minimum and maximum temperature of the nylon 6/6 camshaft gear and the stress and strain values. The utility of this attempt is to help designers to implement effective decisions on material choice and design parameters for optimisation, performance and low-cost design.</p>

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WAN, XIAOKAN, et QIONG WANG. « THE PARAMETERS MATCHING OF ELECTRIC VEHICLE DRIVE MOTOR AND DRIVE SYSTEM ». Journal of Advanced Manufacturing Systems 11, n^o 02 (décembre 2012) : 81–89. http://dx.doi.org/10.1142/s0219686712500060.

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The determination principle of the transmission and the gear number in the electric vehicle driving system are studied in this paper. The results show that the rated power or torque and speed of the motor must reasonably match the parameters of transmission system. A type of electric vehicle is taken as the research object. Two of the five manual transmission speeds gears are calculated and analyzed, which are the equilibrium diagram of the driving force and the driving resistance force between the second gear and the third gear. The single gear-driven scheme of the fixed speed ratio reducer is proposed to replace the heavy mechanical gear reducer. It can reduce the mass of the whole vehicle and increase the driving distance from the theorem. Appling the simulation software Advanced Vehicle Simulator (ADVISOR) of electric vehicle to simulate the vehicle power performance and continued mileage, it verifies that the parameters determination principle and the method of the proposed drive system are correct.

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Shweiki, Shadi, Antonio Palermo et Domenico Mundo. « A Study on the Dynamic Behaviour of Lightweight Gears ». Shock and Vibration 2017 (2017) : 1–12. http://dx.doi.org/10.1155/2017/7982170.

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This paper investigates the dynamic effects of mass reduction on a pair of spur gears. A one-Degree-of-Freedom (DOF) model of a mechanical oscillator with clearance-type nonlinearity and linear viscous damping is used to perform the investigations. One-dimensional (1D) gear pair models aim at studying the torsional gear vibrations around the rotational axes and can be used to simulate either gear whine or gear rattle phenomena. High computational efficiency is reached by using a spring-damper element with variable stiffness to model the gear meshing process. The angle-dependent mesh stiffness function is computed in a preparation phase through detailed Finite Element (FE) simulations and then stored in a lookup table, which is then interpolated during the dynamic simulation allowing for high computational efficiency. Nonlinear contact effects and influence of material discontinuities due to lightweighting are taken into account by FE simulations with high level of detail. Finally, the influence of gear body topology is investigated through a sensitivity analysis, in which analytical functions are defined to describe the time-varying mesh stiffness.

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WANG, Yu-ning, Zhang Zhao-gang, Lin Yi-zhen et Yin Ming-ang. « Dynamic Analysis of Shaft Structure Based on ANSYS/LS-DYNA ». MATEC Web of Conferences 179 (2018) : 01019. http://dx.doi.org/10.1051/matecconf/201817901019.

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In this study, a part of the shafting structure of the accessory transmission system consisting of shaft-gear-bearing is studied. ANSYS/LS-DYNA explicit dynamics simulation software is used to simulate the dynamics of the shaft structure. It compares and analyzes the overall shaft structure, gears and bearings. The simulation results show that: The place where the equivalent stress of the shaft structure is relatively large is mainly concentrated at the tooth root and the tooth surface, where the stress is mainly in the vicinity of two or three teeth. With the change of time, the maximum equivalent stress value and position of the rolling elements are also correspondingly changed, it provides a reference for the design and optimization of gear and bearing in the actual assembly process for transmission system.

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Guo, Shanxin, et Dagui Chen. « Calculation of Unloading Area of Internal Gear Pump and Optimization ». Mathematical Problems in Engineering 2020 (26 août 2020) : 1–9. http://dx.doi.org/10.1155/2020/7319871.

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In order to obtain the calculation method of the unloading area of the internal gear pump during oil trapping, a pair of internal gears including an external gear and an internal gear was used as the research object to simulate the oil trapping process. The geometric relationship during the meshing process was established, and the unloading area expression was obtained by using the geometric pattern expansion method with the variable f as the independent variable. Guided by a mathematical model, two improved optimization schemes were proposed for the internal gear tooth profile, and the unloading area expressions sud, suda, and sudb were obtained. Taking the meshing gear pair with module 3 and number of teeth 13/19 as examples, the simulation results were very consistent with the existing literature. The reliability of the model and the feasibility of the optimization scheme are obtained based on the theoretical analysis and calculation results. This calculation method of unloading area can be applied to the same type of gear pump design in the future, providing a reference for the design of high pressure and low noise gear pumps.

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