Fea analysis was carried out by considering three materials al360, beryllium alloy and magnesium alloy. Analysis of fatigue stresses on connecting rod subjected to. This has entailed performing a detailed load analysis. This thesis describes designing and analysis of connecting rod. Buckling analysis and shape optimization of connecting rod. Which are some of the best analysis projects in mechanical. One mode called side buckling occurs in the direction parallel to the rotational axis of the connecting rod. Apr, 2015 see buckling is a mode of failure characterized by an unstable lateral material deflection caused by compressive stresses.
Shenoy and fatemi 2005 were explained about optimization study was performed on a steel forged connecting rod with a consideration. In his analysis of connecting rod was performed under dynamic load for stress analysis, and optimization. Bhandare professor department of design indo emerson engineering, baramati, india abstractthe connecting rod is intermediate member between the piston and the crankshaft. Its behavior is affected by the fatigue phenomenon due to the reversible. A connecting rod is analyzed for linear buckling and also for nonlinear buckling. Analysis of connecting rod bearing design trends using a. Experimental analysis of connecting rod hero cbz using fea software d. Consequently, an enhanced formula is needed in the shape design of connecting rod shank. Linear and nonlinear buckling in fea digital engineering 247. A parametric model of connecting rod is modeled using catia v5 r19 software and to that model, analysis is carried out by using ansys. The stresses were found in existing connecting rod for the given loading conditions using fea software ansys 11. Design and buckling analysis of two wheeler connecting rod. The buckling load in a fea is obtained through eigenvalue analysis. Pdf buckling analysis of connecting rod irjet journal.
Connecting rod buckling cartesian coordinate system. The design of connecting rod is always based upon buckling load. Then model is exported to ansys workbench software and critical buckling stress is calculated using ansys. Analysis of fatigue stresses on connecting rod subjected. The shape of the connecting rod is complicated so to generate the geometry of the connecting rod in any modelling software use of reverse engineering technique is essential. Blais a thesis submitted in partial fulfillment of the requirements for the degree of masters of science in mechanical engineering approved. It is the main component of an internal combustion ic engine and is the most heavily stressed part in the engine. Our main objective to determine best material for connecting rod after analysing at ansys workbench 16. Finite element analysis of connecting rod to determine the. The buckling strength is heavily affected by the beam section, and johnsons buckling equation is used to estimate the buckling strength of a given beam section. Buckling mode figure 7 shows the buckling mode plot of the connecting rod for the applied loads.
Buckling analysis of connecting rod for different materials ijariie. Failure analysis of connecting rod at big end scientific. Buckling analysis of connecting rod with ultra fine. A connecting rod should be equally strong in buckling about either axis. Analysis of connecting rod bearing design trends using a modebased elastohydrodynamic lubrication model by travis m. Jul 01, 2016 the tie rod was designed using solidworks 2012 version and static analysis was carried out to determine buckling displacements of a vehicle tie rod with a force of 18,563. The euler equation, which depends on the boundary conditions, assumes the uniform. The connecting rod is considered like both ends hinged for buckling about xaxis and both ends fixed for buckling about yaxis.
Engineering and manufacturing cad software case studies usage cadcam systems computer programs connecting rods motor vehicles design and construction. The connecting rod is subjected to a complex state of loading. Analysis of connecting rod under different loading. August 8, 20 department of mechanical engineering kate gleason college of.
High compressive loads and high tensile loads are due to combustion and connecting rods. Computer aided stress and modal analysis of connecting rod. Connecting rod is subjected to more stress than other engine components. Static analysis on a vehicle tie rod to determine the resulting buckling displacement. After analysis a comparison is made between existing steel connecting rod viz. They replace steel aisi 4340 with aluminium 7078 and apply various load condition on the connecting rod such as compressive load, tensile load and buckling load and then analysis the.
A tubular connecting rod construction can be used to provide acceptable stiffness in axial, bending, as well as torsional load cases. We will go into nonlinear buckling shortly, but basically it allows a continuous load build up and then transition to buckling. In addition to linear buckling analysis, rfem also allows for nonlinear buckling analysis using the finite element method. Connecting rod buckling analysis using eigenvalue and explicit methods 2012320102 when designing a connecting rod, one needs to pay attention to the buckling strength of the rod. Venu gopal vegi2, design and analysis of connecting rod using. Connecting rod is subjected to tensile load as well as compressive load.
The connecting rod transmits the piston load to the crank causing the latter to turn, thus converting the reciprocating motion of the piston into a rotary motion of the crankshaft. By using reverse engineering method scan the connecting rod which having complicated geometry so that we can easily import that geometry to create model. Buckling analysis engineering software dlubal software. Abaqus tutorial videos buckling analysis of connecting rod in. For stress analysis of connecting rod it was modelled and meshed in ansys ver. And then give idea about weight reduction opportunities for a production steel connecting rod. Mar 24, 2018 how to find deformation of a master rod at different modes using eigen bucking analysis. How to find deformation of a master rod at different modes using eigen bucking analysis. Design and analysis of connecting rod using forged steel. This study includes design and analysis of four wheeler connecting rod. For more details about buckling and about whipping you can refer to this.
Connecting rod considered like both ends hinged for buckling about xaxis and both ends fixed for buckling about yaxis. Thirdly, it is difficult to define the effective length of connecting rod for frontrear buckling. Kinematics and load formulation of engine crank mechanism. Analysis of connecting rod using analytical and finite element. Aug 28, 2015 static structural analysis of connecting rod in ansys. Static structural analysis of connecting rod in ansys. A solid model of the connecting rod was generated using proe wildfire 3.
The main idea of this study is to do analysis of connecting rod and get idea of stress producing during compressive and tensile loading. Connecting rods are subjected to forces generated by mass and fuel combustion. The stresses were found in existing connecting rod for the given loading conditions using fea software ansys 16. The generated cad model is then discretized and a finite element model will be created using a preprocessor hypermesh.
Pdf buckling analysis and shape optimization of connecting rod. Therefore for buckling about axis yy, the rod is four times as. In the second phase both the analysis analytical and fem are performed for new material ultrafine grained material aa2618. Buckling analysis of connecting rod buckling analysis is a technique used to determine buckling loadscritical loads at which a structure becomes unstableand buckled mode shapesthe characteristic shape associated with a structures buckled response. This video gives you how to perform buckling analysis of connecting rod in abaqus 6. Analysis of connecting rod using composite material. The origin of the fracture was located at the conrod lubrication channel. Ikpe aniekan essienubong 1, owunna ikechukwu 1, patrick o. Connecting rod is designed in proe is imported to the analysis software in the. Connecting rod is modeled using catia software and fe analysis is carried out using ansys software. Geometrically and materially nonlinear analysis with imperfections included gmnia represents the real structural behavior.
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. I suspect the real reason is the manufacturing method used for automotive h versus i section rods, as pat stated above. 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. Abstract the main function of a connecting rod is to convert linear motion of piston to rotary motion of crank. The connecting rod is one of the most important parts of an engine system. A parametric model of connecting rod is modeled using catia v5 software and to that model, analysis is carried out by using ansys 14. The section modulus of the connecting rod should be high enough to prevent high bending stress due to inertia forces and gas load. Connecting rods are widely used in variety of engine. Buckling on connecting rod i want to analysis buckling on conrod, but i have several problems such as 1. The buckling mode analysis gives the buckling factor greater than 1 and hence it can be concluded that the connecting rod can withstand the load applied. Calculation of buckling force the buckling force on the connecting rod given by.
Connecting rod buckling analysis using eigenvalue and. See buckling is a mode of failure characterized by an unstable lateral material deflection caused by compressive stresses. Static analysis on a vehicle tie rod to determine the. First the connecting rod solid model is imported from proengineer wildfire 3. A critical buckling stress connecting rod is use to convert reciprocating motion into rotary motion. Currently existing connecting rod is manufactured by using forged steel. Finite element analysis of polymer based automotive.
Anyone know of examples of engines that had trouble with connecting rod torsional stiffness. A failure analysis investigation of a connecting rod was conducted. One of the conventional closedform solutions for the critical buckling load of a connecting rod is the rankine formula, which is the harmonic mean of the euler equation and the yield strength. In this paper, firstly proper geometrical model was developed using ug nx10. The buckling load factor for the designed connecting rod is 83, which is more than adequate. A connecting rod works in variably complicated conditions, and is subjected to not only the pressure due to the connecting rod mechanism, but also due to the inertia forces. Experimental analysis of connecting rod hero cbz using. In series of automobile engine components a connecting rod is highly critical and researchable one. Engineering and manufacturing cad software case studies usage cadcam systems computer programs connecting rods motor vehicles design and construction materials models engineering design. A parametric model of connecting rod is modeled using solid work software and to that model, analysis is carried out by using ansys 15. Finite element analysis of connecting rod to determine the critical buckling stress and factor of safety sourabh jain1, prof.
International journal for research in applied science. When the maximum stress of the structure is less than ultimate strength and it is said to be safe, at that time critical buckling load becomes design driver i. The critical buckling load of the elasticplastic beamcolumn was studied by timoshenko and gere. In the present investigation, a buckling analysis of connecting rod made up of forged steel used in suzuki sprint1. In this study, detailed load analysis was performed. The lubrication channel exhibited an area containing an embedded wbased material. R fc compressive yield stress wcr buckling load ixx and iyy moi of section about x and y axis resp. They replace steel aisi 4340 with aluminium 7078 and apply various load condition on the connecting rod such as compressive load, tensile load and buckling load and then analysis the connecting rod. His paper describes design, modeling and analysis of connecting rod. Abstractthe connecting rod is a high volume production from automobile side. Yield, fatigue and buckling characteristics are often used as evaluation indexes for the performance of engine connecting rods in mass reduction design to optimize vibration.
Buckling sensitivity of a connecting rod to the shank. Buckling analysis of diesel engine connecting rod for different. Buckling analysis of connecting rod with ultra fine grained. Failure and damage are also more in connecting rod, so stress analysis in connecting rod is very important. Wbased material acted as nucleation site for cracks that propagated by fatigue. It is the main component of an internal combustion ic engine and is the most. Ramani et al focused on the two subjects, first, load and stress analysis of the connecting rod, and second.
Pdf design, buckling and fatigue failure analysis of. There are two practical buckling modes of connecting rod. In his work connecting rod is replaced by steel alloy sae 8620 and aluminum alloy 360 for discover 100cc motorbike. Ansys software was used for the analysis of connecting rod. In this study a solid 3d model of connecting rod was developed using catia software and an analysis was carried out by using ansys 14. It fits in between the crosshead and the crankshaft and converts the pistons reciprocating motion to rotary motion with the crankshaft. Currently existing connecting rod is manufactured by using carbon steel. Finite element analysis of connecting rod is done by considering the materials. Failure analysis of a diesel generator connecting rod. Buckling analysis of connecting rod for different materials. Report by international journal of applied engineering research.
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