Wear study and EHD lubrication analysis on connecting rod big end bearings of off‐highway application engine

2020 ◽  
Vol 32 (5) ◽  
pp. 218-229
Author(s):  
Nagaraj Nayak ◽  
Santosh Rane ◽  
Anarghya A ◽  
Rohit Kushwaha
Keyword(s):  
Connecting Rod ◽  
Ehd Lubrication

EHD Lubrication of Multi-Body Common-Pin Conrod Big End Bearings System

2007 ◽  
Author(s):  
Aurelian Fatu ◽  
Dominique Bonneau
Keyword(s):  
Reynolds Equation ◽  
Film History ◽  
Mass Conservation ◽  
Connecting Rod ◽  
Thrust Bearings ◽  
Ehd Lubrication ◽  
Cylindrical Coordinate ◽  
Real Behavior ◽  
Multi Body ◽  
Fully Coupled

This paper describes a model for the analysis of elastohydrodynamic (EHD) lubrication of a multi-body common-pin connecting-rod (conrod) big end bearing system. Two conrod and three thrust bearings are fully coupled in order to simulate real behavior of the system. An extended Reynolds equation including mass conservation and oil film history is solved in the big end conrod bearings. The HD behavior of the thrust bearings is simulated by a cylindrical coordinate Reynolds equation. By comparisons with classical single rod analysis results show the pertinancy of simulating twin moving conrods.

Simulation of EHD Lubrication of Common-Pin Conrod Big End Bearings in High Speed IC Engines

2005 ◽  
Author(s):  
Ming-Tang Ma ◽  
Bernhard Loibnegger
Keyword(s):  
High Speed ◽  
Internal Combustion ◽  
Inertial Effect ◽  
Body System ◽  
Connecting Rod ◽  
Tribological Behaviour ◽  
Ehd Lubrication ◽  
Ic Engines ◽  
Multi Body

This paper describes a methodology for the analysis of elastohydrodynamics (EHD) of connecting-rod (conrod) big end bearings in high-speed internal combustion (IC) engines. In addition to the elasticity of the conrod structure and crankpin, the dynamic and inertial effect of conrod motion on the bearing tribological behaviour is considered realistically based on a multi-body system (MBS) approach. Results show that it is necessary to simulate two big end bearings of common-pin simultaneously with the inclusion of a complete crankthrow in the MBS model.

Finite Element Mass-Conserving Cavitation Algorithm in Pure Squeeze Motion. Validation/Application to a Connecting- Rod Small End Bearing

1999 ◽  
Vol 122 (1) ◽  
pp. 162-169 ◽  
Author(s):  
Virgil Optasanu ◽  
Dominique Bonneau
Keyword(s):  
Finite Element ◽  
Analytical Approach ◽  
Numerical Results ◽  
Oscillatory Motion ◽  
Finite Element Code ◽  
Connecting Rod ◽  
Ehd Lubrication ◽  
Boundary Position

A simple analytical approach using conditions of conservation of the mass is proposed for the 1-D “negative squeeze” lubrication problem in order to calculate the cavitation boundary position during oscillatory motion of two plates. The same geometrical case is analyzed using Bonneau’s finite element code. Good agreements between analytical and numerical results support validation of Bonneau’s algorithm. As an example of application of this algorithm to squeeze motion case, the EHD lubrication of an elastic connecting-rod small end bearing is analyzed. Influences of the shaft elasticity and lubricant piezoviscosity are presented. [S0742-4787(00)02101-9]

Elastohydrodynamic Lubrication Model of Connecting Rod Big-End Bearings: Application to Real Engines

1997 ◽  
Vol 119 (3) ◽  
pp. 568-578 ◽  
Author(s):  
Toshihiro Ozasa ◽  
Takashi Noda ◽  
Toshiaki Konomi
Keyword(s):  
Boundary Condition ◽  
Power Loss ◽  
Body Force ◽  
Structural Model ◽  
Elastohydrodynamic Lubrication ◽  
The Body ◽  
Connecting Rod ◽  
Ehd Lubrication ◽  
Oil Flow ◽  
Oil Jet

This study presents an elastohydrodynamic (EHD) lubrication model of connecting rod big-end bearings developed taking into consideration the effects of inertia and oil holes. In this model, the effect of inertia, namely the body force, on load and deformation is practically and rationally expressed based on engine dynamics and a structural model of a connecting rod. A method of defining the deformation of bearings has been proposed to simplify numerical analysis. The effect of oil holes, namely an oil feed hole in a journal and an oil jet hole in a bearing, is considered as a boundary condition in the EHD lubrication theory. Calculations of oil flow rate and power loss are also included.

An Optimum Short Bearing Theory for the Elastohydrodynamic Solution of Journal Bearings

1986 ◽  
Vol 108 (2) ◽  
pp. 294-298 ◽  
Author(s):  
P. K. Goenka ◽  
K. P. Oh
Keyword(s):  
Finite Difference Methods ◽  
Computation Time ◽  
Axial Direction ◽  
Approximate Solutions ◽  
Connecting Rod ◽  
Governing Equations ◽  
Ehd Lubrication ◽  
Separation Of Variable ◽  
Raphson Method ◽  
Murty's Algorithm

An approximate method for solving the elastohydrodynamic (EHD) lubrication problem has been developed. The method is based on two assumptions: the separation of variable for pressure and a parabolic pressure distribution in the axial direction. To solve the governing equations, the Newton-Raphson method, in conjunction with Murty’s algorithm, is used. The finite-element and the finite-difference methods are then used to obtain approximate solutions. The rod bearing of a typical connecting rod is analyzed by the new method. The results are compared to the full EHD solution and the rigid bearing solution. Significant reduction in computation time is realized when compared to the full EHD solution.

Powder metal forged and C-70 Steel forged. Fatigue analysis of connecting rod

2011 ◽  
Vol 3 (1) ◽  
pp. 152-160
Author(s):  
A. Souf A. Souf ◽  
◽  
K. Talea K. Talea ◽  
A. Bakali A. Bakali ◽  
M. Talea M. Talea ◽  
...  
Keyword(s):  
Fatigue Analysis ◽  
Powder Metal ◽  
Connecting Rod

Dynamic structural analysis of connecting rod through adaptive mesh refinement for different materials

2018 ◽  
Vol 50 (04) ◽  
pp. 561-570
Author(s):  
I. A. QAZI ◽  
A. F. ABBASI ◽  
M. S. JAMALI ◽  
INTIZAR INTIZAR ◽  
A. TUNIO ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Adaptive Mesh Refinement ◽  
Mesh Refinement ◽  
Adaptive Mesh ◽  
Connecting Rod ◽  
Dynamic Structural Analysis
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