Stress on spur gear and simulation for micro hybrid systems. Mar 14, 2016 how to do analysis of gear in ansys 11. Spur gear, contact stress, finite element method, ansys, rotational. A pair of spur gear tooth in action is generally subjected to two types of cyclic stress, contact stress and bending stress including fatigue.
By altering the amount of rotation, more energy can be manifested from a process. Design of gears lewis formula and hertz equation have been derived to account for various factors which have influence on gear rating. Stress on spur gear and simulation for micro hybrid systems by. Prabhakar purushothaman emphases on the contact stress. Harmonic gear ansys simulation ingenieria mecanica. Design and analysis of stress induced in spur gear tool. Frictional contact stress analysis of spur gear by using finite element method article pdf available in applied mechanics and materials 772.
Determine allowable force on gear teeth, including the factors necessary due to. It is a positive drive maintaining constant velocity ratio and possesses high efficiency in transmission. Effect of rim thickness on bending stresses in low. Contact stress analysis of spur gear for different. We have used spur gear in output stage because, 1 due to large p. The spur gear is sketched and modeled in the ansys designmodeler. During the transmission of torque of 15000 lbin or 1694. In this study, maximum contact stress is determined. Efforts have also been carried out for modeling and finite element analysis of gears using ansys 14.
Modelling and simulation analyses for bending stresses in involute spur gears by finite element method ashu jangid research scholar, department of mechanical engineering. Modelling the gear box without losing its geometry in catia software. The contact stress in dynamic for all 5 cases of spur gear drive is shown in table 5,6 and 7 the diagram for first case for 4 second is given below, figure 4 vonmises stress in 4 secondscase 1 by following the same procedure the contact stress in dynamic conditions for rest of the. I tried to simulate spur gear using stuctural analysis in ansys 19. Analysis of spur gear box using software tool ansys. Among the various types gears spur gear with involute profile is the most simplest considering the design and manufacturing cost 1. The application of finite element analysis allows the formation of bearing contacts. After analyis a comparison is made among exisisting cast iron spur gear. The increasing demand for quiet power transmission in machines, vehicles, elevators and generators, has created a growing demand for a more precise analysis of the characteristics of gear systems. Pdf contact stress analysis of spur gear under the different. Gear is the most common means of power transmission system in modern mechanical engineering world. Bullet penetration test in ansys explicit dynamics tutorial in ansys. The value of contact stress is very important, as the stress value.
One disadvantage of spur gears is that they can produce significant noise. How to setup a spur gear simulation in ansys workbench. Download sheetmetal drawings pdf foldable cardboard box. Apr 25, 2016 here is the tutorial for drawing and analysing a spur gear using ansys workbench.
Ansys workbench contains design modeler in which the gear is designed from basic drawing tools. Feb 10, 2017 simple tutorial showing contact pressure in two spur gears. Also how to do finite element analysis in ansys 11 and catia v5 r20. Modeling and finite element analysis of spur gear semantic scholar. Two criterions have been considered for designing spur gear i. Generate the profile of spur gear teeth model to calculate the effect of gear.
They have straight teeth, and are mounted on parallel shafts. Spur gear fatigue analysis in ansys workbench ansys online training duration. At first, a spur gear with perfect involute is modeled using a 3d cad software. 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.
Stressanalysisspurgeardesignbyusingansysworkbench 1. Calculating gear ratios within a planetary gear set duration. Analysis of composite material spur gear under static. Spur gear design and selection objectives apply principles learned in chapter 11 to actual design and selection of spur gear systems. We will use both triangles and quads in solution of the example problems that follow. Modelling and simulation analyses for bending stresses in. The spur gear is sketched and modelled in ansys design modeller and the contact stress analysis is done in mechanical ansys multiphysics. In this paper, the contact stress analysis of stainless steel spur gear by theoretical method using hertz equation and finite element analysis using ansys 16. They are not intended to be used as guides for determining suitable modeling methods for any application. Spur gears are used to transmit the power between parallel shafts. It has a wide range of applications starting from wrist watch to heavy industries due to its high degree of reliability. Gear is the one of the important machine element in the mechanical power transmission system. I already calculated contact stress between spur gear using agma equation and hertz equation. Ansys workbench contains design modeler in which the gear is designed from.
In this tutorial, it is shown how to perform a explicit dynamics tests. Index terms bending stress, contact stress, gear analysis using ansys work bench, static load. The simplest gears in this category are called spur gears because of their shape. Stress on spur gear and simulation for micro hybrid. Investigation of contact stress in spur gear using lewis equation and finite element method ashish v kadu1 and sanjay s deshmukh1 corresponding author.
Design and analysis of stress induced in spur gear tool profile using catia and ansys puspraj singh 1, gaurav verma 2, dr. These gears are used in cement plants, sugar mills, ball mills, coal mills, kilns, grinding mills, copper converters, and anode furnaces, etc. Analysis of stresses and deflection of sun gear by. Is the material coefficient and is the pitch point coefficient, which are given by 3. Ansys provides a 6node planar triangular element along with 4node and 8node quadrilateral elements for use in the development of plane stress models. I am getting satisfactory results in single gear analysis, but when i am doing pair analysis equi. Finite element methods fem, proengineer and ansys simulation methods are widely used to detail the stress and deflection analysis of the. Modeling and analysis of spur gear for sugarcane juice. University of johannesburg, department of mechanical engineering, p. The bending stress has to be analyzed by means of analytical and fea method. There are a few sorts of stresses exhibit in loaded and turning gear teeth and generally two sorts of. On the other hand, spur gears have a disadvantage in that they easily make noise.
Finite element analysis of a spur gear tooth using ansys and stress reduction by stress relief hole is done in paper 15. A finite element based approach is used for determining the effect of gear rim thickness on tooth bending stresses in low addendum large spur gears. Fea of a static structural case of meshing spur gears. The spur gear is sketched and modelled in ansys design modeller and the contact stress analysis is done in mechanical ansys multiphysics 8. Here is the tutorial for drawing and analysing a spur gear using ansys workbench. Effect on strength of involute spur gear by changing the. Analysis of composite material spur gear under static loading. Further, an elliptical contact area formed when two threedimensional. Tutorial for gear design and calculation with mdesign gearbox dipl. Design and structural analysis of high speed helical gear. The present work is an attempt to find root bending stress distribution, maximum allowable contact stress and total.
In another failure mode, called contact or hertzian fatigue, repeated stresses cause surface cracks and detachment of metal fragments from the tooth contact surface. Ansys workbench static structural fea of meshing of spur gears. Stress analysis spur gear design by using ansys workbench pradeep kumar singh 1, manwendra gautam 1, gangasagar and shyam bihari lal corresponding author. The spur gear is useful in many applications, but may not be ideal in situations that. Stress analysis spur gear design by using ansys workbench. Stainless steel spur gear, static load, contact stress, bending stress, total deformation, ansys workbench 16. In another failure mode, called contact or hertzian fatigue, repeated stresses cause surface cracks and detachment. Spur gear generally fails by bending failure or contact failure. Contact stress and shear stress analysis of spur gear.
How to make this foldable cardboard box in solidworks sheetmetal. The results of the th eoretical stress values are compared with the stress. Fea analysis for gears 3d modelling engineering finite. Ansys, contact stress, finite element analysis, spur gear. Static analysis bending stress on gear tooth profile by variation of gear.
The contact of the spur gear tooth starts in 95pinion and 68. Effect on strength of involute spur gear by changing the fillet radius using fea ashwini joshi, vijay kumar karma abstractgearing is the special division of mechanical engineering concerned with the transmission of power and motion between the rotating shafts. Finally compare and analyzing the spur gear using ansys software. Tutorial for gear design and calculation with mdesign gearbox. Ansys originally a finite element analysis fea code for structural mechanics. I am trying to do the analysis of gear pair together for my 2 stage reduction gearbox which we want to use in sae baja. For this static, the structural and dynamic analysis. Contact stress analysis of spur gear ijert journal. Shape optimization of spur gear on the basis of stress analysis. The smallest number of teeth on a spur pinion and gear, onetoone gear ratio, which can exist without interference is np.
Gear is one of the most important critical components in a mechanical power transmission system, and most industrial dynamic machinery. Utilizing ansys fill in seat software, bending stress, contact stress and static load on the tooth rot for spur gear drive will be found14. Calculate forces on teeth of spur gears, including impact forces associated with velocity and clearances. Then, i have been performing static analysis of spur gear considering one gear as fixed and the other gear with frictionless support and moment.
Static analysis of spur gear using finite element analysis. Analysis of a gear train using finite element modelling. Spur gear is most basic gear used to transmit power between parallel shafts. Also the finite element analysis of spur gear is done to determine the maximum contact stress by ansys 14.
We will load igs file of the assembly that we previously created. Conclusions this tutorial presents a stepbystep procedure of electrostatic analysis on spur gear teeth in ansys multiphysics. Contact stress and shear stress analysis of spur gear using. Based on the deflections and stresses from the analysis we choose the best one between the nylon and polycarbonate spur gears. Static structural analysis of spur gear for baja gearbox. Structural steel, gray cast iron, aluminium alloy, epoxy e. Checking the validation of spur gear with experimental data. In the gear design the bending stress and surface strength of the gear tooth are considered to be one of the main contributors for the failure of the gear in a gear set. Pdf frictional contact stress analysis of spur gear by. The spur gears are sketched, modeled and assembled in ansys designmodeler. The pinion values are decreasing from 95 to 61 and the wheel values are increasing due to clockwise and anticlockwise rotation of pinion and wheel. Contact stress analysis of composite spur gear using photo. The lewis formula is used to calculate the bending stress.
Tobias schulze, driveconcepts gmbh dresden conclusion this is a guide for generating a gear model and subsequent recalculation of the kinematics and the single parts with the software mdesign gearbox. Pdf in this study that spur gears are chosen, contact stress of spur. The above procedure can be modified in relation to the type of each technical problem. There are a few sorts of stresses exhibit in loaded and turning gear teeth and generally two sorts of fatigue failure in spur gear. Parametric design of a spiral gear process major qualifying report. Comparison of our result through fem and ansys with the theoretical results. Thus, the analysis of stresses has become popular as an area of research on gears to minimize or to reduce the failures and for optimal design of gears in this paper bending.
The present work is an attempt to find root bending stress distribution, maximum allowable contact stress and total deformation of a stainless steel spur gear. Spur gear give 9899% operating efficiency vivek karaveer et al. Bending stress analysis of high contact ratio spur gear. 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. There are several kinds of stresses present in loaded and rotating gear teeth. Stress analysis on spur gears using ansys workbench 16. Select the file from the location on which you have saved the file. Can anyone give me any tutorial which can teach me, how to do analysis of gear in ansys 11. 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. Spur gear spur gears are the most common type of gears. Contact stress analysis in a spur gear assembly grabcad. Modeling of spur gear in this study, maximum contact stress is determined, during the transmission of torque of 15000 lbin or 1694. Spur gears are outstanding at direct speeds however they have a tendency of being noisy at elevated speeds 3. But, it is one of the most important machine elements in mechanical power transmission system.
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. This common type of failure which is a slow, progressive failure caused by repeated loading. First of all lets create excell table contained parameters thatll define the spur gear. Parametric modelling of spur gear spur gear parametric modeling allows the design engineer to let the characteristic parameters of a. Christianhartmanngerlach, driveconcepts gmbh dresden dr. Ansys tutorials for undergraduate mechanical engineering courses. The weight reduction and stress distribution for cast steel and composite materials are studied. Spur gears are advantageous because of their low cost and simple design. Spur gear is the simplest type of gear having at tooth cut parallel to the axis of shaft on which the gear is mounted. These exercises are intended only as an educational tool to assist those who wish to learn how to use ansys.
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