PROJECT TEAM MEMBERS K SIVA RAMA KRISHNA Y LOKESWARA RAO R MANI KANTA S SATISH D NETAJI ABSTRACT The automobile engine connecting rod is a high volume production critical component It connects reciprocating piston to rotating crankshaft ID: 589978
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DESIGN AND ANALYSIS OF CONNECTING ROD WITH DIFFERENT GEOMETRIES USING FEASlide2
PROJECT TEAM MEMBERS
K SIVA RAMA KRISHNA
Y LOKESWARA RAO
R MANI KANTA
S SATISH
D NETAJISlide3
ABSTRACT
The automobile engine connecting rod is a high volume production, critical component. It connects reciprocating piston to rotating crankshaft.
Designs of connecting rod have been analysed in this report and finally an optimal design has been selected using ANSYS-14.5 Workbench and CATIA V5.Slide4
INTRODUCTION
One of the important part of the combustion engine is the connecting rod, and the main purpose of the connecting rod is to transfer the energy from the pistons to crankshaft and convert the linear reciprocating motion of a piston into the rotary motion of a crankshaft, from the viewpoint of functionality; also it connects reciprocating piston to rotating crankshaft and some other design connected direct to the crosshead and then transmitting the thrust of the piston to the crankshaft of the combustion engine. The combustion engines connecting rod moves in two way rotating motion and connects both large and small end.Slide5
PARTS AND COMPONENTS OF CONNECTING RODSlide6
TYPES OF MANUFACTURING OF CONNECTING- RODS
Forged
Casting
Powdered MetalSlide7
STRESS-STRAIN DIAGRAMSSlide8
INTRODUCTION TO CATIA
Computer Graphics-Aided Three-Dimensional Interactive Application (CATIA) is the world’s leading computer-aided design (CAD)/computer-aided manufacturing (CAM)/computer-aided engineering (CAE) package. Developed by Dassault systems and marketed worldwide by IBM, CATIA delivers one of the best Product Lifecycle. CATIA started as an in-house development in 1977 by French aircraft manufacturer Avionics Marcel Dassault, at that time customer of the CAD/CAM CAD software to develop.Slide9
MODELLING PROCEDURE
Sketcher: This workbench used to draw simple two dimensional figures that determine the profiles of a three dimensional object such as the cross section of the object.
Part design: This workbench used to complete the feature of a three dimensional part of a major model by obtaining the profiles from the sketcher.
Wireframe and surface: The wireframe and surface workbench is used to obtain the surfaces and around profiles or creating surfaces of desired shapes and sizes.
Assembly: The assembly workbench is a platform for all part design to be imported and assembled by providing proper constraints by the parts movements and limitsSlide10
REFERENCES
Dr.B.K.Roy, Design Analysis and Optimization of Various Parameters of Connecting Rod using CAE Softwares,OM Institute of Technology and Management, Hisar, Haryana, International Journal of New Innovations in Engineering and Technology (IJNIET) Vol. 1
G. Naga Malleshwara Rao, ‘Design Optimization and Analysis of a Connecting Rod using ANSYS’ International Journal of Science and Research (IJSR), IndiaSlide11
DESIGN 2-D DIAGRAMS OF CONNECTING ROD USING CATIA EXISTING MODELSlide12
MODIFIED DIMENSIONS MODEL-1Slide13
MODIFIED DIMENSIONS MODEL-2Slide14
MODIFIED DIMENSIONS MODEL-3Slide15
CATIA MODEL OF CONNECTING RODSlide16
preparation of connecting rod in CATIASlide17
preparation of connecting rod in CATIASlide18
CATIA MODEL OF CONNECTING RODSlide19
preparation of connecting rod in CATIASlide20
MESH GENERATION
It is the process of discretization or dividing the geometry into a number of suitable finite elements, which are interconnected at the nodes. Comprehensive libraries of finite element are available in software. The element will be linear or parabolic, shell, solid, beam, rod, spring, damper mesh and gap are some of the elements available for the purpose of modeling. FEM software provides extensive capabilities to define loading and boundary conditions correctly stimulate the environment.Slide21
MESHING MODEL OF CONNECTING RODSlide22
ANALYSIS PROCEDURE IN ANSYS
PREFERENCES
PREFERENCES ---- STRUCTURAL
PRE PROCESSOR
Element type -- SOLID
Material model – STRUCTURAL STEEL
Real constants – NONE
Meshing -- FREE
Loads -- TOP GROOVE IF FIXED AND LOAD APPLYING INTHE BOTTOM GROOVE.
SOLUTION
--- Solve - current L.S ( Solves the problem)
GENRAL POST PROCESSOR
--- Plot results -- contour plot -- nodal solution(DEFORMATION AND ELONGATION )Slide23
STRUCTURAL STEEL PROPERTIES
Young's Modulus MPa
2.e+005
Poisson's Ratio
0.3
Bulk Modulus MPa
1.6667e+005
Shear Modulus MPa
76923
Density
7.85e-006 kg mm^-3
Coefficient of Thermal Expansion
1.2e-005 C^-1Slide24
STRUCTURAL STEEL PROPERTIES
Specific Heat
4.34e+005 KJ kg^-1 C^-1
Thermal conductivity
6.05e-002 W mm^-1 C^-1
Resistivity
1.7e-004 ohm mm
Compressive Ultimate
strength MPa
0
Compressive Yield
strength MPa
250
Tensile Yield strength MPa
250
Tensile Ultimate strength MPa
460Slide25
RESULTS OF EXISTING MODEL AT LOAD 4319NSlide26
Stress in existing model connecting rod at load 4319NSlide27
Total deformation in existing model connecting rod at load 21598NSlide28
stress in existing model connecting rod at load 21598NSlide29
Total deformation in modified-1 connecting rod at load 4319NSlide30
Stress in modified model-1 connecting rod at load 4319NSlide31
Total deformation in modified-1 connecting rod at load 21598NSlide32
Stress in modified model-1 connecting rod at load 21598NSlide33
Total deformation in modified-2 connecting rod at load 4319NSlide34
Stress in modified model-2 connecting rod at load 4319NSlide35
Total deformation in modified-2 connecting rod at load 21598NSlide36
stress in modified model-2 connecting rod at load 21598NSlide37
Total deformation in modified-3 connecting rod at load 4319NSlide38
Stress in modified model-3 connecting rod at load 4319N Slide39
Total deformation in modified-3 connecting rod at load 21598NSlide40
Stress in modified model-3 connecting rod at load 21598NSlide41
COMPARISION OF RESULTS AT LOAD 4319N
SL NO
PARAMETERS
EXISTING
MODEL
MODIFIED MODEL-1
MODIFIED MODEL-2
MODIFIED MODEL-3
1
STRESS VON-MISES
124.84 MPa
128.34 MPa
140.28 MPa
120.38 MPa
2
TOTAL DEFORMATION
2.5435 e-002 mm
2.7064e-002 mm
3.1107e-002 mm
2.4828e-002 mmSlide42
AT LOAD 21598N
SL NO.
PARAMETER
EXISTING
MODEL
MODIFIED MODEL-1
MODIFIED MODEL-2
MODIFIED MODEL-3
1
STRESS
(VON-MISES)
624.27 MPa
641.79 MPa
701.52 MPa
601.97 MPa
2
TOTAL
DEFORMATION
0.12719 mm
0.13534 mm
0.15556 mm
0.12416 mmSlide43
COMPRESION LOAD 4319N & 21598N
SL NO
PARAMET -ER
EXIST-ING MOD-EL
MODEL-1
MODEL-2
MODEL-3
SLNO
PARAME -TER
EXIST -ING
MOD –EL
MODEL-1
MODEL-2
MODEL-3
1
STRESS
VON-MISES
124.84 MPa
128.34 MPa
140.28 MPa
120.38 MPa
1
STRESS
VON-MISES
624.27 MPa
641.79 MPa
701.52 MPa
601.97 MPa
2
TOTAL
DEFORMATION
2.5435e-002 mm
2.7064e-002 mm
3.1107e-002 mm
2.4828e-002 mm
2
TOTAL
DEFORMATION
0.12719 mm
0.13534 mm
0.15556 mm
0.12416 mmSlide44
Advantages of connecting rod
It carry large amount of loads.
It is working at high temperature.
It has good mechanical properties.
It carries compressive and bending loads.Slide45
Disadvantages of connecting rod
The design of connecting rod is complicated.
High cost.
Skilled labor is required for manufacturing.
Costly alloys are required for manufacturing.
Replacement is difficult.Slide46
CONCLUSION
Various designs of connecting rod have been analyzed in this report and finally an optimal design has been selected. Using ANSYS-14.5 Workbench and CATIA V5, Various results are found out and compared with the existing results.Current work has concluded up with the fact that slight and careful variation in design parameters can give a good design which can be made feasible by a number of analysis using CAE tools and Software’s. After observing all the four models, Existing model, model-1, model-2,and model-3.
Modified model-3 is better than existing model