Figure 1 shows two sets of parts from the same engine. High compressive loads and high tensile loads are due to combustion and connecting rods mass of inertia, respectively. The present work has been established to replace the existing connecting rod made of forged steel with the aluminium mmc connecting rod for weight optimization. Introduction the automobile engine connecting rod is a high. Pdf modelling and analysis of connecting rod ijraset. Structural systems of connecting rod can be analyzed using finite element techniques.
Failure analysis of a diesel generator connecting rod. For the case of the connecting rod s analysis, a structural analysis will be performed. And is responsible to transmit the push and pull from the piston pin to crank pin, thus. Tension and compression analysis in reciprocating engine. K priyaajit, static stress analysis of connecting rod made up of ss 304 used in cummins nta 885 bc engine is conducted, it is observed that the area close to root of the smaller end is very prone. Abstract the main function of a connecting rod is to convert linear motion of piston to rotary motion of crank. Connecting rod is that the link between piston and crankshaft. Engineering analysis reciprocating engine connecting rods.
Analysis and optimization of connecting rod, may, masters thesis, university of toledo. Salleh6 abstract in many cases, the major reason behind or causing catastrophic engine failure is the occurrence of the connectingrod failure and sometimes, such a failure can be attributed to the broken connecting. Engine connecting rod an overview sciencedirect topics. The big end of connecting rod is usually made into two halves so that it can be mounted easily on the crank pin. Wbased material acted as nucleation site for cracks that propagated by fatigue. The origin of the fracture was located at the conrod lubrication channel. The influence of compressive stress is more in connecting rod due to gas pressure and whipping stress. Finite element analysis of ic engine connecting rod by ansys r a savanoor1, abhishek patil2, rakesh patil3 and amit rodagi2 corresponding author. And concluded that the stress induced in the small end of the connecting rod are greater than the stresses induced at the bigger end, therefore the chances of failure of the. The objective of this study is to carry out a fea analysis of. The type of analysis will decide which type of results will be obtained. Design and analysis of connecting rod using forged steel. Pdf a connecting rod of ic engine is subjected to complex dynamic loading conditions.
Static stress analysis of connecting rod using finite. Furthermore, the existing connecting rod can be replaced with a new connecting rod made of astm a 514 steel cold quenched that is 12% lighter and 28% cheaper. Design and analysis of assembly of piston, connecting rod. Dimensions are measured from connecting rod and cad model is developed in proe 2. The lubrication channel exhibited an area containing an embedded wbased material. Connecting rod is subjected to more stress than other engine components. Connecting rod is one of the important driving parts of the petrol and diesel engine. Following sections describe the various plugins used in more detail. But for the early automotive engineers, the tremendous. Pdf in many cases, the major reason behind or causing catastrophic engine failure is the occurrence of the connectingrod failure and sometimes, such. Bearings improperly located during installation can sometimes be hard to spot. Introduction he connecting rod is subjected to a complex state of.
Connecting rod is the intermediate link between the piston and the crank. Keywordsconnecting rod, astm a514 cold quenched steel, static analysis, fatigue analysis, stress life approach. The connecting rod failed at the location indicated by the fea. In series of automobile engine components a connecting rod is highly critical and researchable one. Analysis focused on comparing and then optimizing a rod design using crackable forged steel c70. The mechanic didnt measure the bore for wear and rebuilt the engine with standard parts. Connecting rod is one of the most important parts in engine assembly which transfers energy from piston to crankshaft and convert the linear, reciprocating motion. Advanced connecting rod analysis using custom abaqus. 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. Fem analysis of connecting rod of different materials using ansys.
Tension and compression analysis in reciprocating engine connecting rods. K published on 20161014 download full article with reference data and citations. 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. Finite element analysis of connecting rod of ic engine. The first step in order to start the analysis with the ansys programs help is to choose the type of analysis. The small end of the connecting rod is connected to the piston by means of a fork. 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. 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.
It fits in between the crosshead and the crankshaft and converts the pistons reciprocating motion to rotary motion with the crankshaft. Gopal et al design and analysis of assembly of piston, connecting rod and crank shaft 237 international journal of current engineering and technology, vol. Pdf stress analysis of connecting rod using fea researchgate. Using finite element analysis fea techniques, the author was able to. Dec 16, 2016 stress analysis of connecting rod using hypermesh online workshop duration. Connecting rod is one among the foremost necessary half in automotive engine. Offside wear is usually an indication of misaligned crankshaft or bore. Introduction a connecting rod can be of two types hbeam or ibeam or a combination of both. Geometry of connecting rod used for fea, its generation, simplifications and accuracy is done by using catia.
The study investigated weight and cost reduction opportunities of steel forged connecting rods. Various results for each material will be studied and comparison will be made to study the improvement that occurs with reduction in weight. Failure and damage are also more in connecting rod, so stress analysis in connecting rod is very important. Design and analysis of a connecting rod written by sebastian antony, arjun a. Pathade 2 et al, he dealt with the stress analysis of connecting rod by finite element method using proe wild fire 4. In his work connecting rod is replaced by steel alloy sae 8620 and aluminum alloy 360 for discover 100cc motorbike. The connecting rod is one of the most important parts of an engine system. Figure 1 shows a breakdown of components in a typical connecting rod analysis.
The function of connecting rod is to transmit the thrust of the piston to the crank shaft, and as the result the. A failure analysis investigation of a connecting rod was conducted. This has entailed performing a detailed load analysis. The basic process followed for a connecting rod analysis is summarised below. Then product model was analysed by using ansys software. Malgave 1student, 2student, 3assistant professor 1department of mechanical engineering, aitrc, vita, india abstract the connecting rod is a component which connects the reciprocating piston to the linear crankshaft. Failure analysis of connecting rod at big end scientific. Introduction the automobile engine connecting rod is a high volume production, critical component. It is connected to the piston by means of piston pin. It is the main component of an internal combustion ic engine and is the most heavily stressed part in the engine. Design optimization and analysis of a connecting rod using ansys.
Fem analysis of connecting rod of different materials. The main idea of this study is to do analysis of connecting rod and get idea of stress producing during compressive and tensile loading. Currently existing connecting rod is manufactured by using carbon steel. After analysis a comparison is made between existing steel connecting rod viz. The connecting rod is the intermediate member between the piston and the crankshaft. Pdf a connecting rod basically connects the piston to the crankshaft whilst transmitting power of the combustion from the combustion chamber to rotate. Journal of asian scientific research failure analysis of a. Analysis of connecting rod under different loading. Then analysis was compared for three materials for optimisation result. 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. Its primary function is to transmit the push and pull from the piston pin to crank pin, thus converting the reciprocating motion of the piston in rotary motion of the. The connecting rod is subjected to a complex state of loading. The function of the connecting rod is to transmit the piston thrust to the. In this study, detailed load analysis was performed.
Webster w d, coffell r and alfaro d 1983, a three dimensional finite element analysis of a high speed diesel engine connecting rod, sae technical paper series, paper no. Stress analysis of connecting rod for weight reduction a. The original piston failed from excessive clearance and slapping. Which it converts reciprocatory motion of piston into motion of crankshaft. The present analysis for the piston, connecting rod and crank shaft assembly is done to replace the existing materials with two different sets of materials. Select a bearing material with higher load capacity check. Design and analysis of assembly of piston, connecting rod and.
Connecting rod is designed by machine design approach and compared with the actual production drawing. 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. Engine bearing failure analysis guide edge wear due to distorted connecting rod imperfect journal geometry cavitation erosion spinning of the bearing in the housing. Pdf finite element analysis of connecting rod of ic engine. Feb 17, 2008 design analysis engine connecting rod warwick shipway, mechanical engineering, year 3 17.
A catia model of connecting rod is used for analysis in hypermesh. Pdf stress analysis of 220cc engine connecting rod. So firstly a proper finite element model is developed using cad software catia. The connecting rod is the connection between the piston and the shaft with the rotating crankshaft. Design and structural analysis of connecting rod irjet. 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% survival rate. Abstractthe connecting rod is a high volume production from automobile side. If the rods are designed for use on a crank that does not feature a radiused fillet, the rods may not feature a large chamfer on one side. 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. Analysis, connecting rod, fea, dynamic, optimization, etc. Cad model of connecting rod will be modelled in proe and then be analyzed in ansys software. His paper describes design, modeling and analysis of connecting rod.
Youngs modulus e 210 gpa, yield strength s y 210 mpa, poissons ratio. A parametric model of connecting rod is modeled using catia v5 r19 software and to that model, analysis is carried out by using ansys. And then give idea about weight reduction opportunities for a production steel connecting rod. The ductile iron connecting rod experienced an average life of 1,605,902 cycles at a 50% survival rate or 635,811 cycles at a 90% survival rate. This thesis describes designing and analysis of connecting rod.
Fatigue analysis of connecting rod using finite element. Analysis of connecting rod using composite material. Comparative analysis of two proposed models of connecting rods. Analysis and optimization of connecting rod used in heavy. Localized wear on main bearings showing a pattern along the shaft, for example, worst wear on the middle bearings, is. They are used respectively depending on their field of application or use. It is the main component of an internal combustion ic engine and is the most. The analysis clearly indicated the failure location at the thread root of the connecting rod, caused by improper screw thread profile. The objective of this study is to carry out a fea analysis of a connecting rod and obtain its stress distribution on application of the force. Topology optimization, connecting rod, finite element analysis, minimum weight, linear static method. Connecting rod, structural analysis, titanium, steel, gas load, fatigue, fea 1. Apart from conventional material of connecting rod i choose the connecting rod of fm70 diesel engine which is made of aluminium 6351.
959 129 866 503 1074 1029 35 282 817 832 1001 482 831 365 853 420 24 809 147 116 326 108 1221 419 179 411 405 201 1407 526 37 588 188 470