Transient analysis of ball bearing fault simulation using. The finite element models of crankshaft, bearing, piston and connecting rod was created in ansys and simplified by sub structure technique. Finite element analysis fea is a computerised method for predicting how a product reacts to realworld forces, vibration, heat, fluid flow and other physical effects. The crankshaft satisfied the requirement of stiffness and strength through static analysis. Figure 4boundary conditions applied on 3 d model of piston. Life and factor of safety for the piston are obtain ed from fatigue analysis. Then, if an additional two pairs of planes were passed normal to the first pair, a cube of infinitesimal dimensions would be isolated from the body. Transient finite element for inbore analysis of 9 mm. For the love of physics walter lewin may 16, 2011 duration. Further, it is difficult to experimentally obtain vibration signals from bearing. Pdf finite element analysis of connecting rod of ic engine.
Any continuous object has infinite degrees of freedom and its just not possible to solve the problem in this format. Based on the findings, it was found that it is possible for each casting defect to develop. Transient finite element for inbore analysis of 9 mm pistols. The contact effect was modelled using 2d pointtosurface general contact elements which included elastic coulomb fictional effects. While actual stress can be calculated by classical methods, most will use finite. Design and finite element analysis of crank shaft by using.
Through its chapters the reader will have access to works related to biomedical engineering, materials engineering. Frequency analysis of a four cylinder diesel engine. Finite element analysis of ic engine crank youtube. The results obtained were compared to a case study for the field failure of the connecting rod. The gears were modelled by the quadratic 2d plane strain fournoded element.
A crankshaft is a component which is used to convert a reciprocating movement into rotating. In order to maximize the accuracy of modelling, ppe engineers generate temperature specific material models for specific applications. Optimization of a bicycle crank and spider using finite. From the finite element analysis, the various stress and deformation values have been found out corresponding to the gas pressure taken from the actual engine. It is difficult to identify the ball bearing defect either in frequency spectrum or time domain when the defect is at incipient stage. Crankshaft design using a generalized finite element model. We present our findings and discuss the areas where the design could be improved to reduce stress. Ansys workbench is then activated to import the 3d model and simulate the deformation of crankshaft main journal after shrinkfitting the rotor.
Lu xz, tian y, guan h, xiong c, parametric sensitivity study on regional seismic damage prediction of reinforced masonry buildings based on timehistory analysis, bulletin of earthquake engineering, accepted on june, 5, 2017. For tet10 mesh the linear static stress analysis and the critical location was located at node 174743 and the critical location for tet4 was at node 110703. Using ansys analysis tool, the finite element analysis for the crankshaft was conducted. In the mean time, the software development is improving in this few decades. The relationship between frequency and the vibration modal was explained by the modal analysis of crankshaft. International journal of engineering trends and technology. Finite element analysis of 4cylinder diesel crankshaft.
A crankshaft should have sufficient strength to withstand the bending and twisting moments to which it is subjected. Failure analysis of two wheeler crankshaft using finite. These triangles share their vertices with the threenode pressure triangles. Index termsconnecting rod, structural steel, finite element analysis fea, thermal behaviour. The finite element analyses were performed using altair radioss. They included a destructive test of a prototype wing.
Finite element analysis is an engineering method for the numerical analysis of complex structures. Finite element analysis software fea software autodesk. Authors evaluated stress intensities and the natural frequencies of a 4cylinder crankshaft using finite element method. Optimization of the crankshaft using finite element analysis. Nonlinear finite element analysis of solids and structures, 2nd edition is an essential reference for practising engineers and researchers that can also be used as a text for undergraduate and graduate students within computational mechanics. The velocities will \live on a grid of sixnode triangles. Two planes from infinitesimal distance away and parallel to each other were made to pass through the body, an elementary slice would be isolated. Finite element analysis of gearbox casing using software tool ansys and fft analyze m. Chapter 4 computer implementation for 1d and 2d problems. Crankshaft must be strong enough to take the downward force of the power stroke without excessive bending so the reliability and life of the internal combustion engine depend on the strength of the crankshaft largely. It is conceivable that gears will prevail as the best method for transmitting power. Finite element analysis fea is used to predict contact forces, deformation and stress levels within elastomer components. The uniform pressure of is applied on 18 mpa crown.
Three dimensional finite element analysis of crankshaft. Pdf the main objective of this study to analyze the average vonmisses stress and principle shear. Finite element analysis and optimization of crankshaft design. Interior ballistics involves examining the chamber pressure, trajectory, and velocity of projectiles launched by propellants until outside the muzzle of a gun. Analysis and optimization of connecting rod, may, masters thesis, university of toledo. The interior ballistic theory can be used to estimate ballistic characteristics according to weapon system design. The new design is reanalyzed and the results are also discussed. The paper describes the mesh optimization with using finite element analysis technique to predict the higher stress and critical region on the component. The finite element method is a numerical analysis technique for obtaining approximate solutions to a wide variety of engineering problems, because of its diversity and flexibility as an analysis tool. Forces and constraints can be applied to points, and distributed forces can be applied to spans. Crankshaft, modeling, finite element analysis, optimization. Analysis of a gear train using finite element modelling. The crankshaft is an important part of ic engine that converts the reciprocating motion of the piston into rotary motion through the connecting rod. Finite element models are generated from a limited number of key dimensions which describe a family of crankshafts.
Finite element analysis of gearbox casing using software. Therefore fem is widely used for the stress analysis of mating gears. When you are done building the model, mesh and solve the model to get results. Download finite element analysis codes, examples and course. Finite element analysis and optimization of piston using cae tools 79 university of minho, portugal, engineering failure analysis 2006 480 492. Nguyen university of north florida this masters thesis is brought to you for free and open access by the student scholarship at unf digital commons. Finite element analysis shows whether a product will break, wear out or work the way it was designed. Finite element analysis and optimization of piston using cae tools 78 iv. Finite element analysis for the crankshaft of the piston. Optimization of the crankshaft using finite element.
Download finite element analysis codes, examples and. Introduction it has been forced for engine power and performance to be dramatically increased in recent years and it brings a higher ignition pressure and rated rpm. A finite element model of the spur gears in mesh used in this investigation is shown in figure 1. Ballistics can be divided into interior ballistics, exterior ballistics, and terminal ballistics. By studying he optimization method using geometry and shape method, the following are the weight reduction in the different optimization cases compared with the existing crankshaft. Cuneyt sert 41 chapter 4 computer implementation for 1d and 2d problems in this chapter matlab codes for 1d and 2d problems are provided. Premature failure was reported in the web region of the crankshaft. See the instructions within the documentation for more details. Ashwin kumar devaraj 2011 11 in his study, performed a finite element analysis on the crankshaft of a 4stroke i. The meshed crankshaft with 122,441 elements is shown in figure 6. Manual calculations using finite element method will be done by considering a bigger. Also the thermal analysis of the connecting rod is performed.
We can look at this procedure as involving two grids, one for pressure and one for velocities. Finite element analysis of a nose gear during landing thoai d. The elements used for this analysis are 3d beam and 10node tetrahedron solid 92. The results show that the exposed destructive position is the transition circular bead location of the crank web and the crankpin. Frequency analysis of a four cylinder diesel engine crankshaft by using finite element method and fft analyzer 1 1,2 shantanu jayant.
The wing was loaded in a test rig in a manner that simulated the application of strong aerodynamic pressure during flight. A solid model of the crankshaft was created using higherend computeraided design software, i. Finite element simulation of hot forging of special. Finite element analysis of i c engine crank using ansys. Finite element method is used as a tool for this purpose. The analysis is done either by experimental or finite element analysis. To carry out the detail finite element analysis like static analysis to validate the model and boundary conditions correctness, modal analysis to determine dynamic characteristics of the model and transient dynamic analysis to determine dynamic load factor. Review article using finite element analysis for determining. Finite element analysis of crankshaft deformation after.
Gearing is a standout amongst the most discriminating segments in a mechanical force transmission framework, and in most modern rotating machinery. Design criteria for high power engines crankshafts bentham open. Gear train, ansys, finite element analysis, simulation, modelling. Finite element analysis of gearbox casing using software tool. Finite element analysis of two wheeler honda bike crank. Pdf finite element analysis of a crankshaft of a diesel. The objectives involves modeling and analysis of crank shaft, so as to identify the effect. Misses stresses that comes out from the analysis is international journal of engineering trends and technology ijett volume 19 number 5 jan 2015 international journal of engineering trends and technology ijett volume 19 number 5 jan 2015. Chennai campus, vit university, vandalur kelambakkam road, chennai, tamil nadu, india email. Finite element method reduces discretization or meshing nodes and elements. The result from the finite element analysis is an approximate of the component failure. The result files of reduced models were introduced into excite software to create multibody dynamics calculation of crankshaft in one. Crankshaft design using a generalized finite element model 790279 an analytical tool for the efficient analysis of crankshaft designs has been developed. Fem software ansys was used to analyze the vibration modal and distortion and stress status of crank throw.
The finite element analysis of the deflection of the crankshaft of rotary compressor lingchao kong, liping ren, jia xu, yusheng hu compressor and motor institute of gree electric appliances, inc. Omar, this study applied a finite element analysis and metallographic examination. A threedimension model of ic engine crankshaft is created using catia v5 software. Hopkins, analysis of a balanced breech system for the m1a1 main gun system using finite element techniques, technical report no. In this finite element analysis, the 3d model is built using proengineer wildfire3. As the power and rated rpm increase, the inertia force to the connecting rod at rated rpm also increases. In this paper, a static structural and dynamic analysis was conducted on a single cylinder fourstroke diesel engine crankshaft.
Effectiveness of transient analysis of the finite element bearing model to simulate the vibration signal emanating from ball bearing with faults is presented in this work. 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. Yoo y m, haug e j and choi k k 1984, shape optimal design. In this paper, with the ansys, stress distribution and safety factor of crankshaft were analyzed by using 3d finite element method. The entity model of the crankshaft was established by ug software firstly, and then was imported into ansys software for meshing, and then the finite element model of the crankshaft was constructed. Finite element analysis fea is performed to obtain the variation of stress at critical locations of the crank shaft using the ansys software and. The piston and reciprocating masses are lumped at the ends of the crank pins.
The finite element analysis of the deflection of the. Pdf design and analysis of crankshaft for 4stroke deisel engine. A simple and computationally efficient approach to nonisothermal threedimensional hot forging simulation, theoretically based on a rigidthermoviscoplastic finite element method, is. Structural, thermal and coupled thermo mechanical stresses and temperature gradient are obtained from the analysis. Crankshaft is one of the most critical components for effective and precise working of the internal combustion engine. Design and optimization of piston using finite element. Problems with the components such as cam and rocker arm are wears while the valve bends.
A simple and computationally efficient approach to nonisothermal threedimensional hot forging simulation, theoretically based on a rigidthermoviscoplastic finite element method, is employed. Therefore, all carried analysis are based on the linear properties of the crankshaft material. A2618 alloy piston fig1 vonmisses stress 1 fig2total deformation b. Fea finite element analysis precision polymer engineer. Crankshaft main journal bearings are modeled as linear springs and dashpots. A threedimensional parametric finite element model of crankshaft is developed using brick and wedge elements.
It has been accepted for inclusion in unf graduate theses and dissertations by an authorized administrator of unf digital commons. Jan 10, 2018 frequency analysis of a four cylinder diesel engine crankshaft by using finite element method and fft analyzer 1 1,2 shantanu jayant chaudhari, 2krunal chandrashekhar chaudhari. Finite element simulation of hot forging of special purpose. Finite element analysis of a nose gear during landing. The dynamic loading of the crankshaft is complicated because the magnitude and direction of the load changes during a cycle. Ansys finite element analysis software was used in the analysis of an entry level bicycle crank and spider. A nonlinear threedimensional fea tire model representing a truck tire, 29575r22.
The finite element analysis was performed for each crankshaft. Hence, finite element analysis is the most effective tool to study the design and optimization of the crankshaft. Crankshaft must be strong enough to take the downward force of the power stroke without excessive bending so the reliability and life of the internal combustion engine depend on. A failure investigation has been conducted on diesel engine crankshafts used in tractors and made from 0. Static structural analysis of the existing crankshaft was done using the finite element analysis approach. Keywords stiffness, finite element analysis, big end of connecting rod 1. Finite element analysis fea is performed to obtain the variation of stress magnitude at critical locations of crankshaft. Using ansys analysis tool, the finite element analysis for the crankshaft was conducted under extreme operation conditions, and the stress distribution of the crankshaft was presented. A few years ago, boeing released a television documentary on development of their 777 aircraft. A modelbased design approach to redesign a crankshaft for. This book provides a birds eye view on this very broad matter through 27 original and innovative research studies exhibiting various investigation directions.1003 1044 521 941 220 781 51 1038 1425 969 169 307 108 164 502 1326 1574 1341 1165 1093 1573 495 1159 1422 1459 180 1130 1454 1173 586 849 1331 1091 1561 1326 1094 34 1350 1175 13 406 431 42 698 268