But for the early automotive engineers, the tremendous. Pdf static analysis and optimization of a connecting rod. The connecting rod is connection between the crankshaft and the piston. Connecting rod is designed by machine design approach and compared with the actual production drawing. In modern automotive internal combustion engines, the. The paper deals with study of an assembly of the piston, connecting rod and crank shaft of a four wheeler petrol engine. A time without the simplicity of hopping into a vehicle to take us anywhere we want to go is almost unfathomable to many americans. Connecting rod stress analysis into your dashboard via the link above. Tension and compression analysis in reciprocating engine connecting rods. The components of the assembly have to be rigid and the assembly has to move as a mechanism. Blais a thesis submitted in partial fulfillment of the requirements for the degree of masters of science in mechanical engineering approved.
Computer aided stress and modal analysis of connecting rod. Introduction a connecting rod is the link between the reciprocating piston and rotating crank shaft. Loading of connecting rod is calculated based upon the gas pressure and compressor specification. It connects the piston to the crankshaft and is responsible for. Engineering analysis reciprocating engine connecting rods. The mechanic didnt measure the bore for wear and rebuilt the engine with standard parts. A thesis entitled dynamic load analysis and optimization of connecting rod by pravardhan s. Design of connecting rod which is designed by machine design approach is compared with actual production drawing of connecting rod. This project deals with design and analysis of connecting rod. Thermal and structural analysis of connecting rod of an ic engine 1mr. A comparison of manufacturing technologies in the connecting. In the first part of the study, loads acting on the connecting rod and find out stresstime history at some critical point. Doc static structural analysis of connecting rod by. The function of connecting rod is to transmit the thrust of the piston to the crank shaft, and as the result the.
It undergoes high cyclic loads of the order of 108 to 109 cycles, which range from high compressive loads due. The original piston failed from excessive clearance and slapping. Hence the piston pin holes are fully constrained for all degrees of freedom dof 3. A catia model of connecting rod is used for analysis in hypermesh. Pdf static analysis of connecting rod using forged steel. Analysis of connecting rod using analytical and finite. Connecting rod, structural analysis, titanium, steel, gas load, fatigue, fea 1. This is why the connecting rod is the most stressed part of an engine system. Pdf design and analysis of a connecting rod for the. Evaluating the impact of nonlinear contact modeling in. Once the designing of the connecting rod is done fe analysis is done depending on the loading condition of the connecting rod. In the internal combustion engine, the connecting rod connects the piston to the crank or crankshaft.
This project aims at designing a connecting rod with standard dimensions of a stock one in creo 3. Krishna kanth department of mechanical engineering, sistam college, jntuk, india. They are free to slide along each other and separate but not penetrate each other. Almost everything has an internal structure and can be thought of as a structure. In this study, finite element analysis is carried out for the connecting rod using ansys under static load condition. Thus, the major aim of the current work is to analyze the connecting rod failure. Irfan sadaq, 3shaik vaseem yunus 1,2,3med, muffakham jah college of engineering and technology, hyderabad. Engine connecting rod an overview sciencedirect topics. Ali fatemi graduate school the university of toledo may 2004. Shubham chougale 1ug student 1department of mechanical engineering 1tssm bscoer, pune, india abstractthe connecting rod is a major link inside of combustion engine. Literature survey suggests cyclic loads comprised of static tensile and compressive loads are often used for design and analysis of. Finally, this paper will cover some of the more recent developments in the connecting rod. The connecting rod is that the main a part of the engine, additionally backbone of the engine.
Connecting rod, design, analysis, optimization, fea, anasys, photoelastic analysis. Introduction the connecting rod is a major link inside a. Finite element analysis of single cylinder four stroke petrol engines is taken for the study. The lubrication channel exhibited an area containing an embedded wbased material. Failure analysis of connecting rod at big end scientific.
The model of connecting rod is carried out using pro e software and analysis is carried out using ansys 14 software. Connecting rod can be easily analyzed using finite. To start this tutorial, you have to import the tutorial project tutorial01. Hence, a polygon drawn by these 3 forces should be closed for this piston to be in equilibrium. A connecting rod basically connects the piston to the crankshaft whilst transmitting power of the combustion from the combustion chamber to rotate the crank. F 34, as these 3 forces are acting on a concurrent point of piston. Because of the separate of the connecting rod cap, connecting rod shaft, connecting rod bushes, connecting rod bearing shells, and connecting rod bolt are assemble and analyse. Jun 20, 2011 example of fem analysis performed by creo elements pro. Design and analysis of connecting rod with abaqus international.
Ashok kumar department of mechanical engineering, sistam college, jntuk, india. A parametric model of connecting rod is modeled using catia v5 r19 software and to that model, analysis is carried out by using ansys. Separation contact is defined between all contacting faces. Journal of asian scientific research failure analysis of a. It connects reciprocating piston to rotating crank shaft, transmitting the thrust of the. The introduction of piston cooling nozzles in al engines provides scope for eliminating the oil hole in the connecting rod and thereby reducing the size of the i section. The results can be used for optimization for weight reduction and for design modification of the connecting rod. Nevertheless, connecting rod design is complicated because the engine is to work in variably complicated conditions and the load on the rod mechanism is produced not only by. The reciprocating engine mechanism is widely used as a suitable mechanism for pumps and compressors. The model is developed in catia v5 software and imported to ansys.
Connecting rod, buckling analysis, static analysis, buckling load factor, fe analysis. The existing connecting rod is manufactured using carbon. Modeling and analysis of two wheeler connecting rod citeseerx. Computer aided stress and modal analysis of connecting rod manish kumar department of mechanical engineering abstractinternal combustion engines components are highly complex and stressed components subjected to complex loading. They are used respectively depending on their field of application or use. Make sure that you do not copy verbatim more than two words in a row from the text you have found. The modified goodman diagram is used to carry out fatigue study based on stress life sxn theory. Static stress analysis of a connecting rod assembly in this tutorial we determine the effects of a 2,000 pound tensile load acting on a connecting rod assembly consisting of the rod and two pins.
References 1 venu gopal vegi, leela krishna vegi design and analysis of connecting rod using forged steel. Connecting rod stress analysis into your dashboard via the link above alternatively, you can add the tutorial project from the public projects library by searching for tutorial. The concurrent force pass through this concurrent point. Connecting rod is an important component in an engine. Pdf static structural analysis and optimization of. Connecting rods are mechanical parts for producing movement from a crankshafts piston rotating activity.
Wbased material acted as nucleation site for cracks that propagated by fatigue. Its primary function is to transmit the push and pull from the piston pin to the crank pin, thus converting the reciprocating motion of the piston into rotary motion of the crank. The connecting rods subjected to a complex state of loading. Achievable fail ure frequency reductions require accurate fail ure root cause analysis and the implementation of corrective action measures to prevent failure recurrence. Comparision of manufacturing methods and analysis of. The objective of study is performed on a cast iron connecting rod of a compressor for the static and dynamic analysis. The origin of the fracture was located at the conrod lubrication channel.
There is most significant of the connecting rod in an engine. Figure 2connecting rod in engine connecting rod rotates the crank shaft that helps the engine to maneuver on or any of the vehicles to rotate its wheels. In this regard, in order to calculate stress in different part of connecting rod, the total forces exerted. Fatigue analysis of connecting rod using finite element.
We found that there is possibility of further reduction in mass of connecting rod. Modal analysis of connecting rod as the structure of a connecting rod is complex, generally made with different number of parts. The main aim of paper is to analyze static stresses developed in connecting rod. In this study, detailed load analysis was performed on connecting rod, followed by finite element method in ansys medium. Analysis is done with the pressure of 16 mpa load applied at the piston end of the connecting rod which is calculated by using mathematiijrerd international journal of recent engineering research and development ijrerd 2. Analysis of connecting rod bearing design trends using a modebased elastohydrodynamic lubrication model by travis m. Finite element analysis is a mathematical technique using partial differential formulas for exploring and also fixing problems to an approximate precise. Tension and compression analysis in reciprocating engine. Jay kumar gupta1, shubham shah kamlesh2, ruby mishra3. Analysis of connecting rod under different loading. A connecting rod, also called a con rod, is the part of a piston engine which connects the piston to the crankshaft. Ismail petronas research sdn bhd, bangi, malaysia the immense reciprocating energy transfer in a connecting rod leads to durability concerns in an automotive engine design. The shape of the connecting rod is to be determined to minimize its weight subject to a set of stress constraints. Connecting rod is a main component which connects piston and crankshaft.
The causes for the failure of connecting rod cap and connecting bolts after approximately 175,200 h in service have been investigated. After analysis a comparison is made between existing steel connecting rod viz. The objective of this chapter is to figure out the forces being carried by these structures so that as an engineer, you can decide whether the structure can sustain these forces or not. Introduction to appreciate the certifiable impact, the vehicles had on our overall population, we would need to turn around in time more than one hundred years. August 8, 20 department of mechanical engineering kate gleason college of engineering. Greetings ansys workbench tutorial introduction to static structural. In general, the failure occurs at the big end of connecting rod. Design and analysis of assembly of piston, connecting rod. Failure analysis of a diesel generator connecting rod. Hence, the analysis should involve a rigidbody analysis and flexiblebody analysis. Keywords connecting rod, aluminum, aluminum alloy alfasic i.
Design and analysis of connecting rod for high speed. A solid model of the connecting rod was generated using proe wildfire 3. Sathiamurthi department of mechanical engineering, jyothi engineering college, kerala, india department of mechanical engineering, kongu engineering college, tamil nadu, india abstract the main objective of this study is to explore weight. Connecting rod cap and connecting bolts of a reciprocating compressor are subjected to complex dynamic loads therefore they are of critical machine elements. Gopal et al design and analysis of assembly of piston, connecting rod and crank shaft 236 international journal of current engineering and technology, vol. The present work has been established to replace the existing connecting rod made of forged steel with the aluminum mmc connecting rod for weight optimization. Quasi dynamic finite element analysis was performed at several crank angles. Dynamic analysis of a conn ecting rod using fea 1g. Abstractthe principal of connecting rod is to convert linear motion of piston to reciprocating motion of crankshaft. In order to understand the true impact the automobile has had on our society, we would have to go back in time over one hundred years. Shenoy submitted as partial fulfillment of the requirements for the master of science degree in mechanical engineering adviser.
Abstract the intermediate component between crank and piston is known as connecting rod. Static structural analysis of connecting rod by finite element analysis. It connects the piston with the crankshaft, converting linear to rotational motion fig 1. Pdf dynamic load analysis and optimization of connecting. Design and analysis of connecting rod using forged steel ijser. Design and analysis of a connecting rod for the 117kw six cylinders turbocharged diesel engine article pdf available march 2011 with 5,052 reads how we measure reads. If the engine is operating, connecting rod fails, this could cause a critical situation. Connecting rod is highly stressed component, as it is subjected to the cyclic dynamical tensile and compressive loads. A comparison of manufacturing technologies in the connecting rod industry danielle visser department of metallurgical and materials engineering colorado school of mines golden, co 80401 submission to fierf 060608 advisor. Connecting rod is the link between piston and crankshaft which is acted upon by axial forces and moments at. Fem analysis of connecting rod of different materials using ansys. Hence may 2015we can conclude that the connecting rod with titanium inserts is a better option than the connecting rod with steel inserts because it has lower weight and it has better life. Here, the connecting rod is replaced by various materials like stainless steel, aluminium, c70 steel and also a design change by inducing truss member is suggested. Design evaluation and optimization of connecting rod parameters.
Shenoy and fatemi 2005 were explained about optimization study was performed on a steel forged connecting rod with a consideration. Static stress analysis of a connecting rod assembly. Its primary function is to transmit the push and pull from the. The integrity, as well as efficiency of vehicles, relies on the design of the connecting rod. Analysis is done on the connecting rod using materials aluminum 6061, aluminum 7075, aluminum 2014 carbon fiber 280gm bidirectional and analysis is also done for the assembly of piston, connecting. The existing connecting rod is manufactured using carbon steel. Alternatively, you can add the tutorial project from the public projects library by searching for tutorial. Jun 20, 2015 introduction what is a connecting rod. Figure 1 shows two sets of parts from the same engine. The automobile engine connecting rod is a high volume production critical component. An optimization study was performed on a steel forged connecting rod with a consideration for improvement in weight and production cost.
Analysis of connecting rod of light commercial vehicle of tata motors analytically and by finite element method is carried out in the study of doshi and ingole 5. Design and analysis of connecting rod using forged steel. Ic engine is heart of any vehicle, while in running conditions different components of engine undergoes static and dynamic loadings. The geometric model, finite element mesh, physical dimensions, and. A failure analysis investigation of a connecting rod was conducted. Analysis of connecting rod bearing design trends using a mode. The study has dealt with two parts which are dynamic load and quasidynamic stress analysis of the connecting rod, and second to optimize the weight and cost.
It is the main component of an internal combustion ic engine and is the most. First the connecting rod solid model is imported from proengineer wildfire 3. The connecting rod is modeled as plane stress problem using 25 quadrilateral pelements. Abstract connecting rod acts as a moderator in between the crank and piston.
In fact, most failures continue with increasing frequency until the entire rod string must be pulled and replaced. Static stress analysis of connecting rod using finite. Based on which the high strength carbon fiber connecting rod will be compared with connecting rod made up of stainless steel and aluminum alloy. Failure analysis of a failed connecting rod cap and. This thesis describes designing and analysis of connecting rod. Abstract the main function of a connecting rod is to convert linear motion of piston to rotary motion of crank. Therefore, this study has contain by two subjects, first, load and stress analysis of the connecting rod, and second, optimization for weight reducation. March 2016 international journal of recent scientific. If you do use more than two words together, you will. Currently existing connecting rod is manufactured by using carbon steel. It undergoes high cyclic loads of the order of 108 to 109 cycles, which range from high compressive loads due to.
Introduction a connecting rod can be of two types hbeam or ibeam or a combination of both. Introduction the function of connecting rod in compressors is to transmit the power from crankshaft to the piston to. Fatigue analysis of connecting rod using finite element analysis 789 the stress at any point on the connecting rod at this axial load can be interpolated from the axial stress analysis results. The modeling of the connecting rod is done on proe wildfire 4. Element size for compressive force on connecting rod in this analysis value of force is not important because we are concern with the element size which is varied from. Connecting rod used to connect between piston and crankshaft. Analysis of piston, connecting rod and crank shaft. Abstract the connecting rod is the intermediate member between the piston and the crankshaft. This paper deals with design and analysis of connecting rod. Therefore, the connecting rod should be able to withstand tremendous load and transmit a great deal of power smoothly. As tolerance chain analysis is an essential activity in process planning for geometry assurance, a tolerance chains study based on monte carlo simulations for the connecting rod line has been performed to develop improved manufacturing solutions to lower costs and increase quality. With the help of piston pin, piston and connecting rod are associated and no relative motion between piston pin and piston. Finite element analysis of ic engine connecting rod by ansys r a savanoor1, abhishek patil2, rakesh patil3 and amit rodagi2 corresponding author. The connecting rod is designed using catia v5 6r 2014 according to the specifications given below.
Pdf static stress analysis of connecting rod using. The connecting rod is the intermediate member between the piston and the crankshaft. The optimised connecting rod with reduced weight results in the reduced inertial forces in the system. A comparison of manufacturing technologies in the connecting rod industry.
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