drive shaft design calculations pdf
For spacer shafts the table gives the maximum allowable offset for 1 . »k»v*ì*ìUÇp àVM>nñE In addition to shaft articulation as described in Section 2, side loads can cause the shaft to deflect elastically. universal joints, transmission gears Each planetary gear at its center is attached to coaxially parallel chain crank (CR) which in turn meshes with a separate sprocket wheel mounted on rear wheel hub. Rajendra Mane College of Engineering and Technology Devrukh, Asst. So this problem can be overcome by introducing the shaft drive system. 'how to design a drive shaft drive shaft design for a may 13th, 2018 - the concept of drive shaft design formula is explained in this tutorials on basic mechanical design calculations nowadays lots of software tools are available' 'Shaft calculation MESYS AG 25 • 5.3 Strength calculations (FEA). The basic working principle is based on the patent (JP03/03449). DRIVE VS. Present study covers design, analysis and development of driveshaft for automobile applications. The diameter of a batch of shafts is normally distributed with 99.7% of the shafts within the tolerance field 20h9, it is between 20mm +0 / ‐52μm. A shaft is usually designed to perform a specific task in a specific machine. »µ»v*ìUØUØØ«±Wb®Å]
ZÀ®Å]»v*ì*Öv*ìUØ«±WaWU¬ • Determine torque in shafts from gears, pulleys, sprockets, clutches, and couplings. shafts, each drive shaft having front wheel mounting means on its outboard end. In this Therefore the carbon epoxy composite is providing great strength and less weight as compare to the standard automotive steel drive shaft. The shaft drive increases po, technology, a small number of modern shaft-drive, ends of the shaft are pivoted into the same dimensio, pinion is engaged with a crown and power is transmitted to the rear, If person does not turn the pedal then he will stand on it and so, T = (body mass of the rider) x (g) x (length of pedal cra, The CAD geometry is created by using SOLIDWORKS and, required boundary condition to get proper co, and the vibration of the gear pair are considerab. So, that we reduce the total load act on the particular contact on shaft. FE Model of spiral bevel gear All translational degrees of freedom and rotation about bevel gear is fixed for FE analysis. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 DESIGN AND ANALYSIS OF DRIVE SHAFT FOR HEAVY DUTY TRUCK P.Parveen Sulthana1, K.Aruna2, T.Krishna Rao3, H.G.Shivakumar4 1 M.Tech Scholar, Department of Mechanical Engineering, SV University College of Engineering, Tirupati, Andhra Pradesh, India 2 Assistant … In addition, the message window contains the hint that this shaft-hub-connection is suitable and can be used. Motor Sizing Calculations This section describes certain items that must be calculated to find the optimum motor for a particular application. Dynamic shaft load F wsta [N] Static shaft load F Tmax [N] Maximum span force F ... force unknown at design time, which therefore can not be inclu-ded in the calculation parameters, a suitable safety factor should be considered by the designer. of chain drive systems. This work deals with replacement of conventional two piece steel drive shaft with a single-piece eglass/epoxy, high strength carbon/epoxy and high modulus carbon/epoxy composite drive shaft for automobile shaft for an automotive application. DRIVEN GEARS The drive gear is the gear that is the source of the engine torque and rotation. Download full-text PDF Read full-text. 4. universal joints, transmission gears for axle and axle design will be performed considering all static and dynamic loads acting upon it. The design parameters were optimized with the objective on minimizing the weight of composite drive shaft. RPM. Autmobile Propeller Shaft Design Calculation- Part3 – Critical Speed of Shaft Critical speed or whirling speed of a drive shaft is such a speed at which the deflection of the driving shaft increases drastically due to the effect of the cetripetal force of the rotating cardon shaft and the shaft … Calculate the size of the tolerance field with 95% probability. The dual differential assembly consists of: housing means having a laterally extending passage therethrough aligned on a transverse axis, the housing means having first and second differential casings for associated first and second bevel gear differentials, the casings supported in laterally spaced alignment for rotation about the transverse axis, each first and second differential casing enclosing inboard and outboard side gears in meshing relation with planetary pinion gears, each casing having opposed inboard and outboard axial extensions thereon. The maximum stress experienced by the drive shaft for the specified terrain and for the design load is 125 MPa The total deformation of the drive shaft is 0.13 mm The factor of safety for the drive shaft is more than 1. A»;v*ì vv*Ö(v*ìUØì*¶G¥lU By using this mechanism, it is possible to control the rotation of the target axis without any effect on axes passing through, and then because of easy to produce, 2 wheel drive bicycle is manufactured, i.e., the driving force from the rear wheel transmits to the front wheel in high transmission efficiency without any interference in, Use of advanced composites has resulted in outstanding achievements in several fields as well as aviation, marine and automobile engineering, medicine, medicine and sports, in terms of improved fatigue and corrosion resistances, high specific strength and specific modulus and reduction in energy necessities due to reduction in weight. The main reason for this is a significant saving in weight of drive shaft. inch of spacer shaft length. Design and analysis of composite drive shaft, Modelling risks in international projects, Design, development and testing of a four component milling tool dynamometer, Quality Management in Indian Engineering Education institutes, Constant four wheel drive vehicle transaxle, Bicycle with Bilaterally Multichain Drive Mechanism and Forward Motion Promoting Rear Wheel Support, Mathematical Simulation of Automobile Driveshaft Using Composite Materials by FEM. Designing units of this kind requires precise calculations of all loads in static conditions. ISO 5480 standard applies to splined connections with involute splines based on reference diameters for connecting hubs and shafts either with a removable connection, a sliding fit … of steel shaft of vehicles with an acceptable composite shaft by the FEM. © 2008-2021 ResearchGate GmbH. 2, Issue 2, pp.43-49, A dual differential four-wheel drive assembly is described adapted for a two-wheel drive front transaxle vehicle having an internal combustion engine with a transverse oriented crankshaft for driving the vehicle with front and rear pairs of road wheels, a transmission gear unit for the transaxle including transverse input and output shafts, and right and left laterally extending front axle drive, This patent discloses drive mechanism which facilitates the usage of multiple chain drivetrain, with each chain mounted on chain crank with different axis, on both sides of the bicycle to drive the rear wheel, thereby facilitating application of driving force on larger area. drive shaft. The gear ratios in the transmission and drive axle are used to match the engine speed and torque output to the ve-hicle speed and torque requirements. of the drive shaft are the area of maximum stress concentration. Parashar A., Purohit S., Malviya S., Pande, 2016,"Design and fabrication of shaft driven bicycle", Equivalent von Mises stress and deformations within gear are plotted. universal joints, transmission gears for axle and axle design will be performed considering all static and dynamic loads acting upon it. Shaft Design Objectives • Compute forces acting on shafts from gears, pulleys, and sprockets. The combination of custom process and mechanical design necessary for rotary shaft (Figure 6). 1 August 15, 2007 1 17. DESIGN: The … • 4.2 Design of the driveshaft. Proceed with the next phase of the design. 3. In present study Carbon-epoxy and steel shafts were compared with one another in terms of their deformation below same conditions as within the previous journal. in which a suitable material is appropriate for section Of the Shaft ed. FIRSTMECHPGCON, University Of Pune, Pune, India. So this problem can be overcome by introducing the shaft drive system. Durgude J.A, Gawade S. R., 2015,"Design development and analysis of dual mode bicycle." One is spiral bevel pinion at pedal end and one is straight bevel pinion at the rear wheel end. Startability Index must be greater than 25 (see below calculation). The design of the composite drive shaft is divided into two main sections: First, the design of the composite shaft and second, the design of its coupling. All rights reserved. All damping and nonlinear effects are executed. The shaft for a mixer, especially a large one, involves significant mechanical design, partly because of the myriad of shaft lengths, impeller sizes, and operating speeds, andpartlybecauseboth strength andrigidity arenecessaryfora successful design. The composite drive shaft has a mass of about 2.7 kg, while the amount for steel drive shaft is about 10 kg [1]. • Find bending moments from gears, pulleys, or sprockets that are transmitting loads to or from other devices. Due to the weight reduction, energy consumption will be reduced. A cycle is the completion of • Compare combined stresses to suitable allowable stresses, exerted on shaft from the miter gear (2.1 N-m) Force- Based on axial load exerted on shaft from miter gear (156.12 N) Torque- Exerted by the stall torque of the motor, through a gear ratio of 2:1 (9.64 N-m) o Stress Calculation- 2 2 1/ 2 max [(8 ) 48 ] 4 M Fd T d =102 MPa 2 2 1/ 2 max 3 [(8 ) 64 ] 2 M Fd T d = 58.4 MPa o Factors of Safety- PDF | On Aug 25, 2016, Muni kishore and others published Design and Analysis of Drive Shaft of an Automobile | Find, read and cite all the research you need on ResearchGate enough, it can be utilized for generating pedal work. Figure 18: Message window 0.1.5 Documentation: Calculation Report After the completion of your calculation, you can create a calculation report. The use of composite drive shafts in race cars has gained great attention in recent decades. This Spline Design Data is based on ISO 5480. The ... were developed and constructed, rear-wheel drive, with a longitudinal driveshaft, was the most popular design. D = shaft diameter, inches St = 63000 PSI P = shaft horsepower N = 1101.00 RPM Cd = design coefficent TCMS use 10 St = yield strength, torsional shear PSI D = 2.68 in N = Shaft Speed, RPM D = 67.98 mm 69.67 69.67 0.858 Shafting Calculation eyemarine@ns.sympatico.ca 1 www.eyemarine.com • 5.2 Reliability. ìUØ«±Wb®Å]»v*ìUØ«±Wb®Å]»v*ìUØ«±Wbb®Å]»v*ìUØ«ÿÒêØ«±Wb®ÅZÅ]»v*ìUØ«±Wb®Å]»Bß}µcÐ⨬UØ«±Wb®Å]»v*âi×J¹9>ø¯A
â®Å]»v*ìUØ«±Wb±C±Wb®Å]»v*ìUإءث±Wb®Å]»v)K.?¼. 24 5. Accordingly shaft couplings e.g. Prof. based on providing sufficient fatigue and static Stress capacity for infinite life of the shaft. The drive shaft must provide a smooth, uninterrupted flow of power to the axles. Accordingly shaft couplings e.g. They have high damping capacity hence they produce less noise and vibration. Larger radius of the gear ring than planetary gears accounts for gear ratio. SEE FIGURE 1–2. Also, the value of maximum bending stress is much more than the shear stress. Shaft example 2012 Shaft Design - conveyor drive pulley A Problem description A shaft has to be designed to suit a drive pulley of a conveyor belt system. PDF | On Aug 25, 2016, Muni kishore and others published Design and Analysis of Drive Shaft of an Automobile | Find, read and cite all the research you need on ResearchGate ResearchGate has not been able to resolve any citations for this publication. The least misalignment will result in chain dropping. DESIGN CALCULATION Steel and composite materials and weight of the shaft is optimized and stress intensity factor found for both Steel and composite drive shafts. i±PiÒú7Õ ÈàJ/^Êÿ Ì?V%x¥¬ in which a suitable material is appropriate for section Of the Shaft ed. ìUØ«±WaWb`Wb®Å]»vvv*ìUØ«±Wb®Â`Wb®Å]»vv*Öv*ìUØ«±Wb®Â`Wb®Å]»v*ì*Öv*ìUØ«±Wb®Å\p«°+±Wb®Å]»v*Övv*ìUØ«±Wb®Å]
ZÀ®Å]»v*ìUØ«±WaV°+±Wb®Å]»v*ìUØU¬ 21 4. The ... were developed and constructed, rear-wheel drive, with a longitudinal driveshaft, was the most popular design. ìUØ«±WaWb`Wb®Å]§ú«Û´'öXýÍ
ÑÆÝTV`Wb®Å]» Besides basic devel-opment and designing innovative customer solutions, the main focus of iwis R&D division ranges from calculations, design and test-ing to wear elongation and fatigue strength analysis. Selection Procedure First, determine certain features of the design, such as drive mechanism, rough dimensions, distances moved, and positioning period. VII. ® The drive shaft with multiple pulleys experience two kinds of stresses, bending stress and shear stress. The drive shaft has two gears mounted one at each end. saving development time and helping the decision, layers can be used as the effective tool to reduce wei, but not least, I would like to thank all those who directly or indirectly help us in co, shaft drive for bicycle”, International Journal Of Emergin, International Journal Of Science Technology And Engineering, Vol. The overall dimensions are shown on the diagram below. To perform necessary calculations other measurement signals are required, such as the horizontal articulation angle. The drive shaft and differential are used to transfer this torque. universal joints, transmission gears • 4.4 Axial fixation of the drive shafts. To study relevant analytical model of automotive drive shaft that are available in literature To create geometrical and FE model of drive shaft for dynamic analysis. Lower rotating weight transmits more of available power. Cycling from stop (or idle speed) to a high operational speed, stresses the shaft material from zero stress to its maximum peak stress. d = 53.19 mm. These are minimum required boundary condition to get proper convergence of the model. The conventional bicycle employs the chain drive to transmit power from pedal to the rear wheel and it requires accurate mounting & alignment for proper working. Design & fabrication of shaft drive for bicycle, Prasad G. H., Marurthi S., Ganapathi R., Janardhan M., Madhusudhan M.P., 2014,"Design & fabrication of The use of composite drive shafts in race cars has gained great attention in recent decades. They have high specific modulus and strength. gearbox, wheels). developed. For example, a machine running at 1800 RPM with 12 inch of spacer shaft length would allow a maximum offset of: 0.6 mils/inch x 12 inches = 7.2 mils at either coupling at the ends of the spacer shaft. 27 • Couplings are used to transmit power from drive shaft (e.g., motor) to the driven shaft (e.g. Carbon epoxy is best in terms of maximum deformation as these parameters created during this shaft are less when compared to steel. Fig. Motor Sizing Calculations This section describes certain items that must be calculated to find the optimum motor for a particular application. calculations of drive shaft based on engine power required. The load distribution on the shaft is even with the supporting discs. Wheel hub front • 5.1 Design goals. gear mounted on the drive shaft which is shown in fig 1. 2: Shaft drive for bicycle Use of drive shaft: The torque that is produced from the pedal and transmission must be transferred to the rear wheels to push the vehicle forward and reverse. Selection Procedure First, determine certain features of the design, such as drive mechanism, rough dimensions, distances moved, and positioning period. For our calculation example the splined shaft is su ciently dimensioned. To perform necessary calculations other measurement signals are required, such as the horizontal articulation angle. Gawande A. S., Gedam A. E., Pipre A. G., Bajait N. C.,2015,"Design and fabrication of shaft driven VII. • The shaft rotates on rolling contact bearings or bush bearings. This covers dimension calculations of drive shaft based on engine power required. Proceed with the next phase of the design. • 4.3 Design of the tripod housings. exerted on shaft from the miter gear (2.1 N-m) Force- Based on axial load exerted on shaft from miter gear (156.12 N) Torque- Exerted by the stall torque of the motor, through a gear ratio of 2:1 (9.64 N-m) o Stress Calculation- 2 2 1/ 2 max [(8 ) 48 ] 4 M Fd T d =102 MPa 2 2 1/ 2 max 3 [(8 ) 64 ] 2 M Fd T d = 58.4 MPa o Factors of Safety- ,Ý1B!ÐRª,ÑIé±ØàJ3ZæO¶BXØâf*ìUtyÈQ8*¶WॱU5رï]GÉ9w«$æ=F)WÀ®Â®ÅZÅÅ].Å]
]µ.Å]
]»;v»vv*Ö(v»vv*ìPÖ*ì v*ì*ìU¬Pì v*ì*ìUØ¡¬UØì*ìU8±¤¶|nC$ø«°%Ø«°«±V±C°%Ø«°«±Wb`Wb®Å]
]»k»vv*ìU|PI5}5-N´À©¦gÂáBóO6£`A48ª®'?~¬Uf¬g'ù8ª]»vv*ÑÅ]]» 7.1Theoretical and Ansys results simulation the drive shaft for simplicity has been first idealized as a hollow cylindrical shaft … The use of bevel gears allows the axis of the drive torque from the pedals to be turned through 90 degrees. Here we only consider the maximum torque that can be transferred through the shaft as the known factor to calculate the shaft … Acoustical fluid interactions are neglected, i.e. The maximum total deformation happens in Steel below the given conditions. The maximum bending stress generated at the outer most fiber of the shaft. There may of course be thousands of similar machines produced, each using a shaft of that design, and the manufacturer may provide extra shafts as "spare parts", but that shaft design generally has no use outside the machine for which it was designed. Mechanical engineering, RMCET MU, (In, UG Student, Mechanical engineering, RMCET MU (India), First, it must transmit torque from the transmission to the foot p, During the operation, it is necessary to transmit maximum lo, The drive shaft must also be capable of rotating at the very fast speed. developed. 23 • 4.5 Lubrication and dust caps for tripod joints. The bevel gear at the rear end of drive shaft then meshes with a bevel gear rear wheel hub where the rear the flywheel unit would be on a conventional bicycle and canceling out the first drive torque change of axis. • Various types of retaining rings, thrust bearings, grooves and steps in the shaft are used to take up axial loads and locate the rotating elements. Tangential load is applied on the four teeth of the bevel gear. Weight is additionally reduced in carbon epoxy shaft as compare to the steel shaft by 74%. Accordingly shaft couplings e.g. Fig.1 Replacement of Chain drive bicycle with drive shaft, axis.The design of bevel gear produces less vibration a, The drive shaft and differential are used to transfer this torq, 70 per cent due to polygon effect in chain sprocket drives. Conclusion. Design and fabrication of shaft driven bicycle. assembly consists of a special type of gear (SBE) in which plurality of suitably modified planetary gears and a gear ring are arranged in such a way that gear ring can be rotated via pedal which in turn rotates planetary gears along its direction of rotation. The main components are shaft, disc, cylinder, and hub. The main reason for this is a significant saving in weight of drive shaft. with minimum safety factors of 1.5. radiol forces transmitted through the gears to the shaft to be determined as — —39m N follows. Some parameters such as critical speed, static torque, fiber orientation and adhesive joints were studied. Stress observed in gear is well within acceptable limit. – Start with an inexpensive, low or medium carbon steel for the first time through the design calculations. »kvv*ìUØUØ«XØ«±WaWb`Wb®Å]» All figure content in this area was uploaded by Dr-Rahul Vishwanath Dandage, conventional bicycle and canceling out th, Keywords: Analysis, Bevel gears, drive shaft, sha. Substituting composite structures for conventional metallic structures has much advantage because of higher specific stiffness and strength of composite materials. To perform static analysis and so identify the stress concentration area of the drive shaft. Accordingly shaft couplings e.g. So, the design of the shaft will be based on the maximum bending stress and will be driven by the followi… From experience the customer requires that the inclination of the shaft at the keyways be no more than 1/1200 (tangent or radians).