Since the compressive forces are much higher than the tensile force, therefore the cross section of the connecting rod is designed as a strut and the rankine formula is used. A reference book on ic engine connecting rod design by cadcae aproach paperback october 26, 2015 by barasra rajesh m. The proper condition of a connecting rod is fairly straightforward. Hippoliti 1993 reported design methodology in use at piaggio for connecting rod design, which incorporates an optimization session. Design and analysis of a connecting rod for the 117kw six cylinders turbocharged diesel engine article pdf available march 2011 with 5,090 reads how we measure reads. When designing a crankshaft, it is important to make sure that the stroke and crankpin length dont interfere with the cylinder bore in the cylinder.
Materialized optimization of connecting rod for four. Its primary function is to transmit the push and pull from the. Fem analysis of connecting rod of different materials using ansys. Analysis of connecting rod bearing design trends using a. All crower clutch discs are made with sintered iron and do not contain asbestos. The big end of the connecting rod is connected to the crankshaft. This would allow a small displacement engine with a big bore able to produce the torque of a motor with a longer stroke.
A parametric model of connecting rod is modeled using catia v5 r19 software and to that model, analysis is carried out by using ansys. Fem analysis of connecting rod of different materials. Connecting rod manufacture is a high volume, price sensitive application with strict performance, design and durability requirements. This can be achieved by performing a detailed load analysis. Connecting rods are commonly made from cast aluminum alloy and are designed to withstand dynamic stresses from combustion and piston movement. The results can be used for optimization for weight reduction and for design modification of the connecting. Dec 09, 2011 a rod offset 14 would not weigh much more than a conventional rod, and would cause the same leverage advantage as a crank with a 12 increased stroke at 90 from the cylinder center line. Connection rod converts linear motion of the piston to rotary motion of the crankshaft project, design and fabrication of connecting rods has been a subject of number of papers. Abstract the main objective of this study is to explore weight and cost reduction opportunities in the design and production of a connecting rod. Connecting rod is designed for the purpose to transmit the power from the engine to the shaft and to convert reciprocating motion into rotary motion. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users.
But, before inducing the truss member, basic design calculation will be used to derive the constant and varying design parameters 3. Price new from used from paperback, october 26, 2015. The connecting rod cr is the main moving part and an important component of an internal com. Introduction from a set of schematic drawings of a 4cylinder supercharged volkswagen engine a design analysis is performed to determine the stresses and hence operational safety factor of the connecting rod, using cad packages. Process planning iii abstract process planning includes the series of activities to design the process to transform the blank into the finished manufactured part. The connecting rod is one of the most important components in the internal combustion engine rasekh et al. A connecting rod is subjected to a cyclic load during its service. The connecting rod is one of the most important parts of an engine system. This is the design model of connecting rod for fem analysis. Introduction design internal combustion engine piston, connecting rod and crankshaft theoretical dynamic analysis design internal combustion engine. Connecting rods manufacturing improvements and process planning. Material design for advanced connecting rod for mass. Design of light weight hydraulic connecting rod for agricultural.
Forces due to the cylinder pressure as well as the mass of the connecting rod and the piston assembly are illustrated in figure 2. Materialized optimization of connecting rod for four stroke single cylinder engine 1, marthanapalli haripriya, 2, k. The bending stress depends on the bending moment, which is a function of the load at the c. Connecting rod alignment by geometer given alignment accuracy in the major components of an enginecrankshaft, main bearings, cylinder and pistonany fault must rest with the connecting rod. Here we have to give the names of various parts and transfer the model for m eshing. Connecting rods ibeam connecting rod beam style free. P, india 2 assistant professor, mechanical engineering, narasarao pet engineering college, a. Design of a pm connecting rod sonsino and esper, 1994. Enter ansys in the working directory specif ied by your instruct or using. Analysis of connecting rod bearing design trends using a modebased elastohydrodynamic lubrication model by travis m. Tech me, intl ananatapur dt, affiliated to jntua university, andhra pradesh, india. The use of finite element modelling is not only related to the process design but to the study of the material behaviour as is the case of the research work by chen et al. The load pattern illustrated in the figure above and the design criteria for the connecting rod lead to the test method used in this study. Hydraulic power train assembly of an agricultural tractor is meant to controls the position and draft of the implement depending upon the type of crop, farming.
August 8, 20 department of mechanical engineering kate gleason college of engineering. Design, simulation and manufacturing of a connecting rod. Therefore, the initial design is compared to other design before performing the optimization. Pdf design and analysis of a connecting rod for the. A rod offset 14 would not weigh much more than a conventional rod, and would cause the same leverage advantage as a crank with a 12 increased stroke at 90 from the cylinder center line. Sapat college of engineering, management studies and research, nasik 5,india. Design, simulation and manufacturing of a connecting rod from. A wide variety of connecting rod types options are available to you, such as rs5. Fatigue analysis of connecting rod using finite element. A connecting rod is an engine component that transfers motion from the piston to the crankshaft and functions as a lever arm. Design analysis engine connecting rod warwick shipway, mechanical engineering, year 3 17. A connecting rod connrod mechanism converts rotating motion to reciprocating motion or vice versa. In the point of view that location of the cg point of connecting rod lies more towards the big end.
Hence, the connecting rods big end corner radius was taken as a design variable. This thesis describes designing and analysis of connecting rod. Abstract the connecting rod is the intermediate member between the piston and the crankshaft. Pdf design of connecting rod of internal combustion. Here stainless steel, aluminum alloy and high strength carbon fiber 280gsm bidirectional are used to analyze the connecting rod. Design evaluation and optimization of connecting rod parameters.
Feb 24, 2010 catia free basic online training how to design connecting rod part1 car engine step 1 duration. Pathade 2 et al, he dealt with the stress analysis of connecting rod by finite element method using proe wild fire 4. The connecting rod is subjected to a complex state of loading. In 2 authors elaborate advanced manufacturing systems for forging products. Also, three dimensional finite element analyses were performed.
This has entailed performing a detailed load analysis. Aluminium alloys also can be used for these as an alternative. Design and analysis of connecting rod using forged steel. Therefore, the connecting rod should be able to withstand tremendous load and transmit a great deal of power smoothly. In this paper a design change is suggested in which truss is induced in the connecting rod design. Current automotive ic engines connecting rods are made of steel. They could obtain 20% weight reduction in the neck region of the connecting rod. A reference book on ic engine connecting rod design by cadcae aproach rajesh m. The stress at a point on the connecting rod as it undergoes a cycle consists of two components, the bending stress component and the axial stress component. Mar 16, 2016 the other constraint was the one on thickness to bound it away from zero.
Together with the crank, the connecting rod converts the reciprocating motion of the piston into the rotation of the crankshaft. Manufacturing variations in joint surface flatness and bearing crush were predicted. The rod must be straight, centertocenter rod length must meet design specs, the pin bore and bigend bore must be perfectly round, each bore must be sized appropriately for wrist pin and crank rod pin fit and oil clearance and the rod must be free. Design and analysis of cam shaft for multi cylinder engine vulleru swamulu1, n. Small end of the connecting rod is connected to the piston by means of gudgeon pin. Abstract the main objective of this work was to explore weight reduction opportunities for forged steel connecting rod in ashok leyland bharat stageii engines. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. In this lecture a numerical problem has been solved using ashby approach to choose material for a connecting rod such that it sustains both. Bedse1 1department of mechanical engineering, savitribai phule pune university gokhale education societys r. Its light and has the ability to absorb high impact, but it comes a. A rod that transmits motion or power from one moving part to another, especially the rod connecting the crankshaft of a motor vehicle to a piston. Connecting rod, structural analysis, titanium, steel, gas load, fatigue, fea 1. It is a pin jointed strut in which more weight is concentrated towards the big end. This paper presents the design connecting rod of internal combustion engine using the topology optimization.
New considerations in connecting rod design 8323 connecting rod design factors such as joint surface flatness, bearing crush, geometric shape, and capscrew torque can significantly affect bore distortion, assembly stresses, and bearing and joint load distribution. In general, the failure occurs at the big end of connecting rod. Connecting rod definition of connecting rod by the free. Design and analysis of connecting rod using forged steel ijser. Theoretical dynamic analysis design internal combustion engine. Siva nagaraju2, teege srinivas3 1 pg student, mechanical engineering, narasarao pet engineering college, a. Stresses at the bottom of the connecting rod column ishida et al. Linkage of the threedimensional parametric design system established through solidworks and the secondary development of the cad with the needs of enterprise. Process or material improvements leading to lower costs result in large scale cost savings. Blais a thesis submitted in partial fulfillment of the requirements for the degree of masters of science in mechanical engineering approved. Pdf design and analysis of a connecting rod for the 117kw. Analysis and optimization of connecting rod with different materials. It is used 10 node and 20 node tetra shape of element type solid92. Sudershn kumar et al 5,2012 found that aluminum boron carbide have working factor of safety is nearer to theoretical factor of safety, 33.
As the purpose of the connecting rod is to transfer the reciprocating motion of the piston into rotary motion of the crankshaft. Connecting rod is integral part of internal combustion engine. A reference book on ic engine connecting rod design by cadcae aproach. There is no specific method to create an optimum process. Connecting rod design factors such as joint surface flatness, bearing crush, geometric shape, and capscrew torque can significantly affect bore distortion, assembly stresses, and bearing and joint load distribution. Finite element analysis and material optimization for.
Development of connecting rod threedimensional parametric. Connecting rod design, connecting rod, fatigue testing, finite element analysis, analytical approach. College anantapur dt, affiliated to jntua university. Design and optimization of four wheeler connecting rod using. Author see all formats and editions hide other formats and editions. A connecting rod, also called a con rod, is the part of a piston engine which connects the piston to the crankshaft. Design considerations for connecting rod international journal of. Analysis of connecting rod bearing design trends using a mode.
Annual north american production is approximately 100 million rods. A reference book on ic engine connecting rod design by cad. The other constraint was the one on thickness to bound it away from zero. Design of connecting rod for light weight using c70s6 material.
The connecting rod is required to transmit the compressive and tensile forces from the piston, and rotate at both ends. Connecting rods manufacturing improvements and process planning tolerance chain analysis and training material silvia garde gonzalez master thesis 2015 kth royal institute of technology. They are used respectively depending on their field of application or use. Stress analysis of connecting rod for weight reduction a. The rod must be straight, centertocenter rod length must meet design specs, the pin bore and bigend bore must be perfectly round, each bore must be sized appropriately for wrist pin and crank rod pin fit and oil clearance and the rod must be free of potential flaws. Design and optimization of four wheeler connecting rod. Materialized optimization of connecting rod for four stroke. Feb 17, 2008 design analysis engine connecting rod warwick shipway, mechanical engineering, year 3 17. It fits in between the crosshead and the crankshaft and converts the pistons reciprocating motion to rotary motion with the crankshaft.
Design of connecting rod a connecting rod is a machine member which is subjected to alternating direct compressive and tensile forces. Topology optimization, connecting rod, finite element analysis, minimum weight, linear static method. The objective of the present work is to design and optimize a connecting rod based upon its material properties by using connecting rod of different materials. High compressive loads and high tensile loads are due to combustion and connecting rods mass of inertia, respectively. Material used to manufacture connecting rod in mass. Failure analysis of connecting rod at big end scientific. Introduction a connecting rod can be of two types hbeam or ibeam or a combination of both. Introduction a connecting rod is the link between the reciprocating piston and rotating crank shaft. Since the compressive forces are much higher than the tensile force, therefore the crosssection of the connecting rod is designed as a strut.
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