Optimization & Finite element Analysis of Single Joint Universal Coupling in Automobile Truck

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IJIRST 窶的nternational Journal for Innovative Research in Science & Technology| Volume 1 | Issue 7 | December 2014 ISSN (online): 2349-6010

Optimization & Finite Element Analysis of Single Joint Universal Coupling in Automobile Truck Dhwani Sanghani Pursuing Masters Department of Mechanical Engineering Atmiya Institute of Technology & Science, Rajkot

N. D. Gosvami Assistant Professor Department of Mechanical Engineering Atmiya Institute of Technology & Science, Rajkot

Abstract Universal joint in a rigid rod that allows the rod to bend in any direction, and is commonly used in shafts that transmit rotary motion. Due to pin (fork) wear occurs, at the mating surface of the universal coupling. It becomes noisy when rotate at high speed. Our main aim is to replace traditional single joint universal coupling with modern one which having a high strength to withstand desired motion, reduce weight& cost and saving time during assembly of components. It is used in Automobile industry, Food packing machinery, pharma machinery and heavy machinery where Power Torque is to be transmitted between misalign axis. Keywords: Universal Coupling, CREO, Ansys, Assembly, Strength, Stresses. _______________________________________________________________________________________________________ I.

INTRODUCTION

Universal coupling is used in rotating shaft that transmits rotary motion. It is a specialized rotary joint used to allow a rotating split shaft to deflect along its axis in any direction. It is a positive mechanical connection between rotating shafts which are not parallel but intersecting. The flexibility is achieved by constructing the joint with two U-shaped yokes which is joined by a cross shaped hub. One of the yoke is attached to the end of each portion of the split shaft and joined with the cross hub, with the U-sections oriented at 90 degree to each other. It allows the horizontal primary shaft to drive inclined shaft with no friction or loss of speed or drive output potential. It is one of the oldest of all flexible couplings. It is commonly known for its use on automobiles and trucks.

Fig. 1: Universal Coupling

II. LITERATURE SURVEY Reference[1] Two cases of failure in the power transmission system on vehicles: A universal joint yoke and a drive shaft byH. Bayrakceken, S.Tasgetiren, トー.Yavuz, Afyon Kocatepe University, Technical Education Faculty, Afyon 03200, Turkey 16 November 2005.In this paper spectroscopic analyses, metallographic analyses and hardness measurements are carried out for universal joint yoke and a drive shaft of an automobile power transmission system. For the determination of stress conditions at the failed section, stress analyses are also carried out by the finite element method. Reference[2] Dynamics of universal joints, its failures and some propositions for practically improving its performance and life expectancy by Farzad Vesali ,Mohammad Ali Rezvani, Mohammad Kashfi August 2012, Volume 26, Issue 8, pp 2439-2449.In this paper analyzing the loading behavior and the surface conditions of the defected bearings. By comparison with the known fatigue theories attempts are made in order to dig into the causes for the failures. Reference[3] An Investigation On Stress Distribution For Optimization Of Yoke In Universal Joint Under Variable Torque Condition: A Review by S G Solanke1 and A S Bharule Vol. 3, No. 2, April 2014.In this paper, an investigation on Stress Distribution for Optimization of Yoke in Universal Joint under Variable Torque Condition. Yoke is analysed under torque load from steering rod observing hot spot Stress concentration region, hot area potentially carrying load. Scope to optimize part by eliminatingdensity in order to maximize area of hot region with reducing in dead region. Reference[4] Finite Element Analysis of Universal Joint Swati N. Datey , S.D. Khamankar, Harshal C. Kuttarmare IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN:2278-1684,p-ISSN: 2320-334X, Volume 11, Issue 3 Ver. V (May- Jun. 2014), PP 64-69. In this paper,Finite Element analysis of rigid flange coupling is carried out with the help of ANSYS Software for different torque and load condition and it verify by manual calculation.

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