The piston pin end is the small end, the crank end is the big end and the center shank is of i cross section. Tension and compression analysis in reciprocating engine. Here stainless steel, aluminum alloy and high strength carbon fiber 280gsm bidirectional are used to analyze the connecting rod. Gopal et al design and analysis of assembly of piston, connecting rod and crank shaft 237 international journal of current engineering and technology, vol. Based on the simulation model results the design parameters are predicted by an artificial intelligence technique.
Other parties may have an interest in design collaboration, procurement purchasing, costing, manufacturing, quality control, marketing, handling packaging. The main function of connecting rod is to transmit the translational motion of piston to rotational motion of crank shaft. Carbon steels or alloy steels are the most commonly used materials. 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.
Finite element modelling a three dimensional connecting rod. In the point of view that location of the cg point of connecting rod lies more towards the big end. However, neither the details of optimization nor the load under which optimization was. Connecting rod, structural analysis, titanium, steel, gas load, fatigue, fea 1. It is the main component of an internal combustion ic engine and is the most. 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. Design and analysis of a connecting rod for the 117kw six cylinders turbocharged diesel engine. Connecting rods link oscillatory motion to rotary motion in ic engines, and rotary to oscillatory motion in pumps. Conventional design method is mainly dependent on experience. In order to decrease the inertial force and add the span life of the engine, the weight of connecting rods is as litter as possible. The design of the above mentioned principal parts are discussed, in detail, in the following pages. The main objective of this paper is to design evaluation through finite element analysis for fatigue life of connecting rod used in hero honda motor cycle. What is the design procedure for an connecting rod.
This thesis describes designing and analysis of connecting rod. Vi42 calculation of crankshafts for internal combustion engines. The weight of the connecting rod is also reduced by 0. Design and force analysis of slider crank mechanism for film. Under complex loading connecting rod of an automobile vehicle a high production component. Eccentric press in this press, the driving shaft carries an eccentric integral with it. Rivets are made from mild steel bars with yield strength ranges from 220 nmm2 to 250 nmm2. Abstract the main function of a connecting rod is to convert linear motion of piston to rotary motion of crank.
Slider crank mechanism for demonstration and experimentation page 6 background the assembly of a piston, cylinder, connecting rod and crankshaft is the classic form of the slidercrank mechanism. These ideas have been mainly related to machining sequence, machine tool and new technologies for machining. Design and construction of a connecting rod slideshare. The big end of the connecting rod is connected to the crankshaft. The function of the connecting rod also involves transmitting the thrust of the. Pdf design of connecting rod of internal combustion.
Shigleys mechanical engineering design, 9th editionmcgrawhill. Design of connecting rod a connecting rod is a machine member which is subjected to alternating direct compressive and tensile forces. Design and analysis of connecting rod using forged steel. Process process design starts from using our cadif spreadsheet program on the analysis of the forging process,cadif program is to use a simplified geometry and material. Connecting rods are manufactured by means of forging. An innovative design of experiment doebased method for optimizing the performance of a mechanical system for different ranges of design parameters is then proposed. An engineering drawing is a technical not artistic drawing which clearly defines and communicates a design to other interested parties.
Design and force analysis of slider crank mechanism for. Hippoliti 1993 reported design methodology in use at piaggio for connecting rod design, which incorporates an optimization session. Alloy steels are used for manufacturing conrods for high performance engines as they provide the required cyclic strength without substantially increasing the dimensions of critical sections. A connecting rod is a shaft which connects a piston to a crank or crankshaft in a reciprocating engine. Oct 25, 2015 refer chapter 25 from the book, design of machine elements by v. Currently existing connecting rod is manufactured by using carbon steel. It acts as a linkage between piston and 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. Design analysis engine connecting rod warwick shipway, mechanical engineering, year 3 17. Rules for classification and construction vi additional rules and guidelines. Nov 25, 2016 hi guys this is our first video on design of piston step step procedure in machine design subject. Engine connecting rod an overview sciencedirect topics.
The objective of the present work is to design and analyses of connecting rod made of aluminium alloy. Its primary function is to transmit the push and pull from the piston pin to the crankpin and thus convert the reciprocating motion of the piston into the rotary motion of the crank. Design of connecting rod using design data hand book connecting rod design procedure dmm dme duration. Mar 22, 2017 connecting rod the connecting rod is the intermediate member between the piston and the crankshaft. Design and analysis of connecting rod using forged steel leela krishna vegi1, venu gopal vegi2. The big ends of the connecting rods conrods contain bearings rod bearings which ride on the offset rod journals. In this video solve numerical problem related to connecting rod. It connects the piston to the crankshaft and is responsible for transferring power from the piston to the crankshaft and sending it to the transmission. A connecting rod is one of the most mechanically stressed components in internal combustion engines. Design of cotter joint to connect piston rod and crosshead. It is the main component of an internal combustion ic engine and is the most heavily stressed part in the engine. Design data hand book, s md jalaludin, anuradha publishers 2. The connecting rod is the intermediate member between the piston and the crankshaft. Being one of the most integral parts in an engines design, the connecting rod must be able to withstand tremendous loads and transmit a great deal of power.
The design of crankshafts are based on an evaluation of safety against. Pdf analysis of connecting rod using analytical and. Refer chapter 25 from the book, design of machine elements by v. This thesis has been focused on the study of the connecting rod manufacturing process. Introduction connecting rod is an integral component of an engine and it is classified under functional component based on its application. Cam driven press in this press, a cam is used to press the ram down words and suitably located springs restore the original position of ram when pressure applied is removed. Connecting rod is subjected to alternate tension and compression load, where compressive load is much higher than tensile load.
The analysis of the scania line together with a benchmark among different leading companies on the connecting rod manufacturing has been undertaken. The objectives of this paper are to develop structural modeling, finite element analyze and the optimization of the connecting rod for robust design. Dynamic analysis of the connecting rod is similar to dynamics of the crankshaft, since these components form a slidecrank mechanism and the connecting rod motion applies dynamic load on the crankpin bearing. Solve dimension of the connecting rod, diameter of big end and small end parts and find number of bolt used in connecting rod. Small end of the connecting rod is connected to the piston by means of gudgeon pin. Design of machine members 2 pdf notes dmm 2 notes pdf. Material optimization of connecting rod using finite. The weight and design of the connecting rod have a good influence on performance of an automobile engine. Hence strut is considered while designing the cross section of connecting rod and rankines formula is used. Design of cotter joint to connect piston rod and cross head. Material used to manufacture connecting rod in mass. It is a pin jointed strut in which more weight is concentrated towards the big end.
Design of crank shaft, connecting rod and valve gear. In general a slider crank transmits motion generated by the linear displacement of the piston by a working fluid to rotational motion of a shaft. Fatigue strength is the most important driving factor for the design of connecting rod and it is found that the fatigue. Crankshaft design, materials, loads and manufacturing, by. Jawaharlal nehru technological university, kakinada, ap, india. Selection of material, shape, and manufacturing process for a. This project aims at designing a connecting rod with standard dimensions of a stock one in creo 3. An optimization study was performed on a steel forged connecting rod with a consideration for improvement in weight and production cost. Design,and,analysis,of, connecting,rod,for,high,speed,application,in,i.
A parametric model of connecting rod is modeled using catia v5 r19 software and to that model, analysis is carried out by using ansys. Total weight of table 245 n weight on left side of slider crank 98 n. Together with the crank, it forms a simple mechanism that converts reciprocating motion into rotating motion it is the main function of a conne. 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. Crankshaft counterweight engine block connecting rod rod bearing oil pan camshaft cam lobes intake valve engine coolant rocker arm cover rocker arm valve spring cylinder head. They are used respectively depending on their field of application or use. In this lecture a numerical problem has been solved using ashby approach to choose material for a connecting rod such that it sustains both. An early documentation of the design occurred sometime between 11741206 ad in. The length of the connecting rod of the slider crank mechanism is determined based on the requirement of lift for the table as well as on maximum bag length required for packaging. Bedse1 1department of mechanical engineering, savitribai phule pune university gokhale education societys r. Kinematics and load formulation of engine crank mechanism. 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 performances of automobiles rely on the engine in high extent, plus connecting rods are the main part of the engine, whose work environment is poorer and pressure is complex. Gib and cotter joint and its design engineers gallery. All our products, designs and services are organic, glutenfree, contain no gmos, and will not upset anyones precious feelings. The proper condition of a connecting rod is fairly straightforward. Dynamic analysis of the connecting rod is similar to dynamics of the crankshaft, since these components form a slidecrank mechanism and the connecting rod motion. The connecting rod cr is the main moving part and an important component of an internal com. Rules for classification and construction vi additional rules.
Modern manufacturing process of forged connecting rod. Design and analysis of connecting rod for high speed. A gib and cotter joint is usually used in strap end or big end of a connecting rod as shown in fig. Introduction a connecting rod can be of two types hbeam or ibeam or a combination of both. The cotter joint to connect piston rod and cross head is shown in fig. Piston, piston rings and piston pin or gudgeon pin, 3. Selection of material, shape and manufacturing process for a connecting rod abstract this activity centers on the courses of strength of materials and production design offered at a sophomore level mechanical engineering curriculum. The connecting rod is a major link inside of a combustion engine. A rivet consists of a head and a body as shown in fig. Fatigue analysis of connecting rod using finite element. It has had a significant impact on society, and is considered one of the most significant.
These fatigue tests were performed to directly mimic the stresses a connecting rod undergoes in an engine. Connecting rod manufacture is a high volume, price sensitive application with strict performance, design and durability requirements. Design of connecting rod for high speed application in ic engine using two different materials likes aluminum and aluminum alloy alfasic and also mentions the its mechanical properties which are required for design of connecting rod. Its primary function is to transmit the push and pull from the. Rules for classification and construction vi additional. Slider crank mechanism for demonstration and experimentation page 6 background the assembly of a piston, cylinder, connectingrod and crankshaft is the classic form of the slidercrank mechanism.
Optimal design of automobile connecting rod basic on. Nptel has changed the links of pdf lecture notes since august 2019. The project focuses on selection of suitable material, design. Here we explore competing processes for casting a small aluminum alloy connecting rod figure 14. 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. Pdf design and analysis of a connecting rod for the 117kw. Mech2400 5400 engineering drawings lecture introduction. Pdf connecting rod is an essential component of an internal combustion engine. Design and force analysis of slider crank mechanism for film transport used in vffs machine kittur ravi ashok1.
Abstract the connecting rod is the intermediate member between the piston and the crankshaft. Design and analysis of assembly of piston, connecting rod and. And these bending loads are the primary reason for using an i crossection in connecting rod design. Why is the i section preferred for the connecting rod. The structure of connecting rod was modeled utilized solidworks software. Design and optimization of slider and crank mechanism with. Enter ansys in the working directory specif ied by your instruct or using. Design and analysis of connecting rod using forged steel ijser.
Connecting rod is integral part of internal combustion engine. Steel materials are used to design the connecting rod. The design of crankshafts are based on an evaluation. Connecting rods of vehicles are generally manufactured by the process of forging or casting either wrought steel or powdered metal. The objectives of this paper are to develop structural modeling, finite element analyze and the optimization of the connecting rod for robust. We collected most searched pages list related with jigs and fixtures ppt nptel and more about it. Introduction a connecting rod is the link between the reciprocating piston and rotating crank shaft. In this project the material forged steel of connecting rod replaced with aluminium alloy. A connecting rod is a machine member which is subjected to alternating direct compressive and tensile forces. 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. Balancing of rotating and reciprocating systems in engine.
Design of machine members 2 pdf notes dmm 2 notes pdf book starts with the topics covering types of journal bearings, types of rolling contact bearings, thrust in connecting i rod, transmission of power by belt and rope drives, load concentration factor, square acme, helical and bevel gears, worm gears properties of worm gears, etc. This mechanism has a limitation of size of the press. In this project, one component of an engine in particular, the connecting rod, will be analyzed. Design of piston step by step procedure machine design how to.
Crankshaft counterweight engine block connecting rod rod bearing oil pan camshaft cam lobes. A connecting rod, also called a con rod, is the part of a piston engine which connects the piston. In this lecture a numerical problem has been solved using ashby approach to choose material for a connecting rod such that it sustains both buckling and fati. Fem analysis of connecting rod of different materials using ansys.
Introduction connecting rod is an integral component of internal combustion engine. In such a type of joint, the piston rod is tapered in order to resist the thrust instead of being provided with a collar for the purpose. The function of the connecting rod also involves transmitting the thrust of the piston 1. Rivet is a round rod which holds two metal pieces together permanently. Design of internal combustion engine components be mechanical. Sapat college of engineering, management studies and research, nasik 5,india. Pdf design and analysis of a connecting rod for the. The usual form of the connecting rod in internal combustion. Slider crank mechanism for demonstration and experimentation. So, we get a total of eight models for two different design and four different materials 6. Connecting rod design a6200 reengineering the model.
How to download notes directly in pdf format from nptel. 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. Contemporary crankshaft design design, materials, manufacturing note. Other parties may have an interest in design collaboration, procurement purchasing. A connecting rod basically connects the piston to the crankshaft whilst transmitting power of the combustion from the combustion chamber to rotate the crank. The piston pin end, the center shank and the big end. Basic understanding part ii in part i of this series basics of the static and dynamic balancing of rotating objects were discussed. The average life of a malleable iron connecting rod was 764,962 cycles at a 50% survival rate or 347,734 cycles at a 90%. The internal combustion engine was conceived and developed in the late 1800s. This paper presents the design connecting rod of internal combustion engine using the topology optimization.
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