The contact tension in the coupling gears is the key parameter in the design of gears. The spur gears are sketched, modeled and assembled in ansys designmodeler. This common type of failure which is a slow, progressive failure. The file used to create the spur gear and rotate and translate into mesh are given in the. The results obtained from finite element analysis are compared with theoretical hertz equation values. Dear all, while solving the spur gear the dimensions and loads are quoted from a research article, i. At first, a spur gear with perfect involute is modeled using a 3d cad software. As a result, based on this finding if the contact stress minimization is the primary concern and if the large power is to be transmitted then a spur gear with higher module is preferred.
Generally speaking, when two spur gears are in mesh, the gear with more teeth is called the gear and the one with the smaller number of teeth is called the pinion. The spur gear is sketched and modeled in the ansys designmodeler. Citeseerx design, modeling and optimization of spur gear. Straight gear is the most basic gear used to transmit power between parallel axes. Analysis of spur gear using ansys the two dimensional models fatigue or yielding of a gear tooth due to excessive bending stress is two important gear design considerations.
Dynamic analysis of nonlinear timevarying spur gear system. Contact stress analysis of spur gear for different. Furthermore, by using the equations developed in this study, the mesh stiffness of the involute spur gear pair with asymmetric. Pdf the failure of gear teeth because of fatigue is a common phenomenon. Initially download the bevel gear model which was given under the video. These stresses were compared with the theoretical values. The spur gear are modelled and assembled in ansys design modeler and stress analysis of spur gear tooth is done by the ansys 14. Static analysis bending stress on gear tooth profile by variation of gear. The teeth project radially, and with these straightcut gears, the leading edges of the teeth are aligned parallel to the axis of rotation. Firstly, a single degreeoffreedom gear pair model is established with consideration of the gear backlash, timevarying mesh stiffness and multiple harmonic excitations. We will load igs file of the assembly that we previously created. N karthik bommisetty abstract a finite element procedure has been developed in this work to determine the load distribution factor, km, of the agma formula for a set of spur gear.
This paper concerns the frequency response characteristics of a nonlinear timevarying spur gear system subjected to multifrequency excitation. Dimensions of the gear tooth are taken from practical understanding and is analysed for different torque specifications of the three existing vehiclemodels of maruti suzuki using ansys workbench r14. Free gear design software gear creator emachineshop. This paper analyses the bending stresses characteristics of an involute spur gear tooth under static loading conditions. An analysis is done on footstep power generator project where gear driver is used, analysis is done in ansys software. Lahtivirta et al modelling of spur gear contact using a local adaptive finite element mesh. Analysis of a gear train using finite element modelling. Stress analysis on spur gear using ansys ansys simple project. Gear is one of the most important machine elements in mechanical power transmission system.
An improved numerical method for the mesh stiffness calculation of spur gears with asymmetric teeth on dynamic load analysis. Citeseerx stress analysis spur gear design by using ansys. What are the effect of forces acting at the contact point of the mating spur gears. The contact stresses are examined by using 2d fem model. Spur gear drive solidworks video tutorial duration. Then, i have been performing static analysis of spur gear considering one gear as fixed and the other gear with frictionless support and moment. This paper deals with the bending stress calculation of spur gear theoretically and validating it with ansys software.
Smart size is used the number of elements near the roots of the teeth are automatically are much greater than in other places. Click on geometry and import the previously downloaded geometry to spaceclaim. Gear mate ansys static simulation complite youtube. Dynamic analysis of nonlinear timevarying spur gear. From the deformation pattern of steel and grey cast iron, it. How to setup a spur gear simulation in ansys workbench. Nov 30, 2018 the gear is one of the important elements of the machine in the mechanical power transmission system. The spur gear generally fails to bend the fault or contact failure. Now open ansys workbench and click on static structural and rename it as bevel gear. Stress analysis spur gear design by using ansys workbench.
The spur gear consists of the first tooth plus one tooth rotated clockwise and two teeth rotated counterclockwise for a total of four teeth. Ansys workbench contains design modeler in which the gear is designed from basic drawing tools. Contact stress analysis of composite spur gear using photo. Contact stress analysis in a spur gear assembly grabcad. Gears are mainly type like spur gears, helical gears, double helical gears, bevel gears, crown gears, hypoid gears, worm gears, rack and pinion, epicyclic gears etc. The grabcad library offers millions of free cad designs, cad files, and 3d models. Procedure for tooth contact analysis of a face gear meshing.
Marimuthu and muthuveerappan studied the load sharing on spur gears with asymmetric profiles for standard and high contact ratio spur gear drives. An improved numerical method for the mesh stiffness calculation of spur gears with asymmetric teeth on dynamic load analysis fatih karpat, oguz dogan, celalettin yuce, and stephen ekwaroosire advances in mechanical engineering 2017 9. It was found that the results from both hertz equation and finite element analysis are comparable. Sep 03, 20 view stress and deformation on the edge, surface and body of gear pair ansys workbench simulation duration. The conventional method of calculating gear contact stress using hertzs theory for verification by 2d fem analyzer using. A design and structural static analysis of spur gear in. A gear is a rotating machine part having cut tooth, which mesh with another toothed part in order to transmit torque. In this study, maximum contact stress is determined. Finite element analysis of a spur gear tooth using ansys and stress reduction by stress relief hole is done in paper 15. Gear torque analysis with solidworks the simulation of about particular axis with help of solidworks duration. Ansys originally a finite element analysis fea code for structural mechanics.
Here the theoretical maximum contact stress is calculated by hertz equation. Spur gear is most basic gear used to transmit power between parallel shafts. Finite element method fem is the easy and accurate. Join the grabcad community today to gain access and download. Generate the profile of spur gear teeth model to calculate the effect of gear bending, using threedimensional model and compare the results of two materials. Spur gear generally fails by bending failure or contact failure. Here we will give moment to one of the gear and will analyse the effect of the stress and strains produced at the mating region of pair of gears. Stress analysis of spur gear by using different materials. In addition, the developed spur gear model was compared to the gear standard iso 6336 and a commercial. Torque is applied to one of the spur gears and by frictionless support. Ali raad hassan, contact stress analysis of spur gear teeth pair, world academy of science, engineering and technology 58, 2009, pp. Checking the validation of spur gear with experimental data. But, it is one of the most important machine elements in mechanical power transmission system.
The gear is one of the important elements of the machine in the mechanical power transmission system. In this paper using ansys work bench software, bending stress, contact stress and static load on the tooth of spur gear drive is found. Gear mate ansys static simulation complite duration. Approximate equations for the meshing stiffness and the load. Contact stress analysis of spur gear for different materials. Approximate equations for the meshing stiffness and the. Steel is a popular choice when creating metal gears due. Apr 25, 2016 gear torque analysis with solidworks the simulation of about particular axis with help of solidworks duration. Modeling and finite element analysis of spur gear semantic scholar. Perform parametric study to study the effect of varying load on the various stresses, strains on the spur gear model. The use of commercial universal numerical finite element software has become an increasingly popular alternative for gear stress analysis and this research compares the root bending stresses in external spur gears established using iso 6336. How to setup a spur gear simulation in ansys workbench i realized that too many people are asking question regarding the boundary conditions required for setting up a simulation for a spur gear.
Wei yangang gives theoretical research to found location of the maximum contact stress for a pair of involute spur gear, whose contact ratio is larger than 1 and validated by finite element method. The unit to indicate the sizes of spur gears is commonly stated, as specified by iso, to be module. These types of failure can be minimized by analysis of the problem during the design stage and creating proper tooth surface profile with proper manufacturing methods. Analysis of spur gear box using software tool ansys. Compare that to the bottom gear where the stress contour is smooth. Comparison of our result through fem and ansys with the theoretical results. Modeling of spur gear in this study, maximum contact stress is determined, during the transmission of torque of 15000 lbin or 1694. The tooth profile is generated using catia and the analysis is carried out by finite element method using ansys software.
An improved numerical method for the mesh stiffness. Static analysis of spur gear using finite element analysis. Stress analysis on spur gears using ansys workbench 16. Gear is one of the most important critical components in a mechanical power transmission system, and most industrial dynamic machinery. Prabhakar purushothaman emphases on the contact stress. Extensive research has been carried out for reduction of root stress and for that attention has taken to the tooth fillet, the location where the fracture initiates 2.
Ansys, optimized spur gear1 cast iron, optimized spur gear2 steel. Spur gear fatigue analysis in ansys workbench ansys online training duration. Procedure for tooth contact analysis of a face gear. Technological university hmawbi, myanmar nwe lin min dept. The tooth profile is generated using catia and the analysis is carried out by finite. Stress analysis spur gear design by using ansys workbench pradeep kumar singh 1, manwendra gautam 1, gangasagar and shyam bihari lal corresponding author.
I currently have a static structural simulation running, however i cannot modify this to be explicit dynamics or transient structural beyond my knowledge. This thesis also considers the variations of the whole gear body stiffness arising from the gear body rotation due to bending deflection, shearing displacement and. Shape optimization of spur gear on the basis of stress analysis. Abstract a gear is a rotating machine part having cut tooth, which meshwith another toothed part in order to transmit torque. Contact stress and shear stress analysis of spur gear. Procedure for tooth contact analysis of a face gear meshing with a spur gear using finite element analysis. Finally we have compared the results of cast iron spur gear with that of steel gear and also compared the all spur gear with those optimized form of spur gear. Next, the analysis was done using both fem and hertizian stress formula. Stress analysis spur gear design by using ansys workbench pradeep kumar singh, manwendra gautam, gangasagar, shyam bihari lal. It has a wide range of applications starting from wrist watch to heavy industries due to its high degree of reliability. Stress analysis on spur gear using ansys diy ansys mechanical project provided with 3d images, synopsis, project. Dear all, while solving the spur gear the dimensions and loads are quoted from a research article, i the student community is a public forum for authorized ansys academic product users to share ideas and ask questions. Contact stress and shear stress analysis of spur gear using.
And the bending stresses in the tooth root are examined by using 3d fem model. Also the finite element analysis of spur gear is done to determine the maximum contact stress by ansys 14. The spur gear is sketched and modelled in ansys design modeller and the contact stress analysis is done in mechanical ansys multiphysics 8. To achieve this, first, three dimensional involute spur gear pairs were developed in solid works 2012 premium and the 3d model was exported to ansys workbench 14. For the meaning of the terms used in the software and for additional information regarding spur gears, click on the spur gears help button. In the workspace, add desired custom features as needed. Introduction spur gears are the simplest and most common type of gear. Stress analysis on spur gear using ansys ansys simple.
Gear simulation i need two involute spur gears in mesh over several tooth cycles in ansys workbench modelled. Chen and shao 12 calculated the mesh stiffness of spur gear pairs with profile modifications and tooth crack, and developed the dynamic simulation of the tooth with crack propagating. The model of spur gear 9 has been exported in ansys software for shape optimization. That is evidence that the slice boundary is too close to the teeth. View or download all content the institution has subscribed to.
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