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International Gear Conference 2014: 26th-28th August 2014, Lyon
1st Edition - September 18, 2014
Author: Philippe Velex
Language: English
eBook ISBN:9781782421955
9 7 8 - 1 - 7 8 2 4 2 - 1 9 5 - 5
This book presents papers from the International Gear Conference 2014, held in Lyon, 26th-28th August 2014. Mechanical transmission components such as gears, rolling element…Read more
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This book presents papers from the International Gear Conference 2014, held in Lyon, 26th-28th August 2014. Mechanical transmission components such as gears, rolling element bearings, CVTs, belts and chains are present in every industrial sector and over recent years, increasing competitive pressure and environmental concerns have provided an impetus for cleaner, more efficient and quieter units. Moreover, the emergence of relatively new applications such as wind turbines, hybrid transmissions and jet engines has led to even more severe constraints. The main objective of this conference is to provide a forum for the most recent advances, addressing the challenges in modern mechanical transmissions. The conference proceedings address all aspects of gear and power transmission technology and range of applications (aerospace, automotive, wind turbine, and others) including topical issues such as power losses and efficiency, gear vibrations and noise, lubrication, contact failures, tribo-dynamics and nano transmissions.
A truly international contribution with more than 120 papers from all over the world
A judicious balance between fundamental research and industrial concerns
Participation of the most respected international experts in the field of gearing
A wide range of applications in terms of size, power, speed, and industrial sector
These papers will be particularly useful for experts on mechanical transmissions both from a research and industrial perspective.
Foreword
Industrial Sponsors
Plenary Papers
High ratio transmissions – the key component for future mechatronic systems
Tribo-dynamic behavior of gear pairs
Influence of enveloping stressed volume and trochoidal interference on durability of gear teeth
Gearbox power losses – Influence of lubricants, tooth and casing geometry
Session 1: Worm Gears
Measurement of helix deviation for planar double enveloping hourglass worms
ABSTRACT
1 INTRODUCTION
2 WORKING PRINCIPLE AND CONSTITUTION OF THE MACHINE
3 MEASUREMENT PRINCIPLE
4 DATA PROCESSING
5 CONCLUSIONS
Calculation of the efficiency of worm gear drives
ABSTRACT
1 INTRODUCTION
2 POWER FLOW IN WORM GEAR DRIVES
3 CALCULATION OF THE POWER LOSSES BY WORM GEAR DRIVES
4 COMPARISON OF THE MEASUREMENT AND THE SIMULATION
5 ANALYSIS OF THE POWER LOSSES
6 CONCLUSION
Strength of plastic helical wheels meshed with various types of worms
ABSTRACT
1 INTRODUCTION
2 EXPERIMENTAL METHOD AND APPARATUS
3 EXPERIMENTAL RESULTS AND DISCUSSION
4 CONCLUSION
Loaded behaviour of steel/bronze worm gear
ABSTRACT
1 INTRODUCTION
2 NUMERICAL MODEL
3 RESULTS AND STUDIES
4 CONCLUSION
Session 2: Tooth Modifications
Optimal modifications on helical gears for good load distribution and minimal wear
ABSTRACT
1 INTRODUCTION
2 MESHING SIMULATION - ACTUAL PATH OF CONTACT
3 LOAD DISTRIBUTION - LOCAL PRESSURE DISTRIBUTION
4 WEAR-SIMULATION
5 COMPARISON TO TEST RESULTS - DISCUSSION
6 CRACK CRITERION
SUMMARY
Profile optimization of the teeth of the double rackand-pinion gear mechanism in the MCE-5 VCRi
ABSTRACT
1 INTRODUCTION
2 STUDY OF THE CORRECTION PARAMETERS INFLUENCE
3 CALCULATION OF THE OPTIMUM PROFILE ON A 3D MODEL
4 CONCLUSION
A procedure to determine the optimum flank line modifications for planetary gear configurations
1 INTRODUCTION
2 ADAPTION OF THE METHOD FOR PLANETARY GEARS
3 APPLICATION: EVALUATION OF A ‘FLEX PIN DESIGN’
4 INFLUENCE OF PLANET CARRIER TORSION WHEN USING ISO6336-1, ANNEX E, METHOD
5 SOME REMAINING QUESTIONS
6 CONCLUSION
Multi-objective optimisation of profile modifications in spur and helical gears – an analytical approach
ABSTRACT
1 INTRODUCTION
2 THEORY
3 ELEMENTS OF VALIDATION
4 PERFORMANCE DIAGRAMS ON THE MASTER CURVE
5 CONCLUSION
Session 3: Manufacturing (I)
Manufacturing method of double helical gears using multi-axis control and multi-tasking machine tool
ABSTRACT
1 INTRODUCTION
2 TOOTH SURFACES OF DOUBLE HELICAL GEARS
3 CAD/CAM SYSTEM
4 MANUFACTURING OF DOUBLE HELICAL GEARS
5 MEASUREMENT OF DOUBLE HELICAL GEARS
6 TOOL WEAR AND LIFE TIME
7 APPLICATION TO PUMP GEARS
8 CONCLUSIONS
Gear tooth surface roughness of helical gears manufactured by a form milling cutter
ABSTRACT
1 INTRODUCTION
2 GEOMETRY OF TOOL
3 MILLING PROCESS
4 THE MACHINED SURFACE
5 NUMERICAL EXAMPLE AND VALIDATION
6 CONCLUSION
ACKNOWLEDGEMENT
Grinding face-hobbed hypoid gears through full exploitation of 6-axis hypoid generators
ABSTRACT
1 INTRODUCTION
2 THE FACE-HOBBING METHOD
3 PROPOSED METHOD TO GRIND FACE-HOBBED BEVEL GEARS
4 A NUMERICAL EXAMPLE
5 CONCLUSIONS
Process model for honing larger gears
ABSTRACT
1 INTRODUCTION
2 CHALLENGE
3 RESEARCH OBJECTIVE AND APPROACH
4 WORKPIECE AND HONING TOOL DESIGNS
5 ANALYTICAL MODELLING OF THE GEAR HONING PROCESS
6 EXPERIMENTAL SETUP
7 EMPIRICAL PROCESS ANALYSIS
8 SUMMARY AND OUTLOOK
Session 4: Plastic Gears
Gear tooth deflection of spur polymer gears
ABSTRACT
1 INTRODUCTION
2 THEORETICAL BACKGROUND
3 PRACTICAL EXAMPLE
4 RESULTS
5 CONCLUSION
6 ACKNOWLEDGEMENTS
Experimental and numerical study of a loaded cylindrical glass fibre reinforced PA6 gear
ABSTRACT
1 INTRODUCTION
2 GENERALITY ON PA6 + 30%GF GEARS
3 NUMERICAL MODEL
4 EXPERIMENTAL MEASUREMENTS
5 CONCLUSION
Lifetime and meshing teeth temperature of plastic crossed helical gear: case of grease lubrication
ABSTRACT
1 INTRODUCTION
2 EXPERIMENTAL PROCEDURE
3 RESULTS AND DISCUSSION
4 CONCLUSION
Session 5: Hypoid/Bevel Gears
Improvement of the excitation behavior of bevel gears considering tolerance fields caused by manufacturing and assembly processes
ABSTRACT
1 INTRODUCTION AND MOTIVATION
2 APPROACH OF ROBUST GEAR DESIGN VIA VARIATIONAL CALCULUS
3 EVALUATION OF THE LOAD-FREE EXCITATION BEHAVIOR
4 ANALYSIS OF THE LOADED EXCITATION BEHAVIOR
5 SUMMARY AND OUTLOOK
Hypoid gears with involute teeth
ABSTRACT
1 BACKGROUND
2 RACK COORDINATES
3 CYLINDORIDAL COORDINATES
4 HYPERBOLOIDAL CUTTER COORDINATES
5 ILLUSTRATIVE EXAMPLE I
6 SUMMARY
Increasing the load-capacity of bevel gears by the use of modern optimization methods
ABSTRACT
1 INTRODUCTION
2 ASYMMETRIC TOOTH PROFILE
3 COMPARABILITY OF DIFFERENT BEVEL GEARS
4 OPTIMIZATION OF THE CONTACT PATTERN
5 OPTIMIZATION OF THE TOOTH ROOT
6 CONCLUSION
Note
Session 6: Gear Noise (I)
Effects of rib arrangements on radiated noise of gearbox
ABSTRACT
1 INTRODUCTION
2 THEORETICAL CONSIDERATIONS
3 RADIATED NOISE ANALYSIS
4 ACOUSTIC CONTRIBUTION ANALYSIS
5 GEARBOX IMPROVEMENT
6 CONCLUSIONS
ACKNOWLEDGEMENT
Low noise design of a truck timing multi-stage gear: robust optimization of tooth surface modifications
ABSTRACT
1 INTRODUCTION
2 THE OPTIMIZATION PROBLEM
3 THE METAHEURISTIC ALGORITHM
4 THE ROBUSTNESS STUDY
5 RESULTS
6 EXPERIMENTAL TESTS
7 CONCLUSIONS
ACKNOWLEDGEMENTS
Low power transmission plastic gear trains: which parameters affect the subjective acoustic quality?
ABSTRACT
1 INTRODUCTION
2 PYSCHOACOUSTIC METRICS
3 METHODOLOGY
4 RESULTS AND DISCUSSION
5 CONCLUSION
Session 7: Manufacturing and Design (I)
Improvement of the design method for helical gears by considering manufacturing related bias errors
ABSTRACT
1 INTRODUCTION
2 OBJECTIVE AND APPROACH
3 INFLUENCES OF BIAS ERRORS ON OPERATIONAL BEHAVIOR
4 CHARACTERIZATION AND DETERMINATION OF SYSTEMATIC TOOTH FLANK DEVIATIONS
5 CONSIDERATION OF BIAS ERRORS IN TCA SOFTWARE
6 DEFINITION OF THE DESIGN METHOD
7 SUMMARY AND OUTLOOK
Investigation of the effect of manufacturing errors on dynamic characteristics of herringbone planetary gear trains
ABSTRACT
1 INTRODUCTION
2 MODELING METHODOLOGY
3 INTERNAL EXCITATIONS OF THE SYSTEM
4 AN EXAMPLE SIMULATION
5 CONCLUSIONS
ACKNOWLEDGMENTS
An approach of pairing bevel gears from conventional cutting machine with gears produced on 5-axis milling machine
ABSTRACT
1 INTRODUCTION
2 TOPOLOGICAL MODICATION OF THE 3D MODEL
3 APPLICATION AND RESULT
4 CONCLUSIONS
Session 8: Rollers – Roller Bearings
Mechanical power losses of full-complement needle bearings of planetary gear sets
ABSTRACT
1 INTRODUCTION
2 POWER LOSS MEASUREMENT METHODOLOGY
3 EXPERIMENTAL RESULTS
4 MECHANICAL POWER LOSS MODEL OF A FULL-COMPLEMENT NEEDLE BEARING
5 CONCLUSION
A finite element evaluation of a bearing instrumentation method for evaluating bearing load distributions and roller stresses of the final drive of a wind turbine gearbox
ABSTRACT
1 INTRODUCTION
2 HIGH SPEED SHAFT ANALYSIS
3 IMPLEMENTATION OF BEARING RACE GROOVE
4 CONCLUSION
ACKNOWLEDGMENTS
Modeling and analysis of a planetary roller screw
ABSTRACT
1 INTRODUCTION
2 THEORY
3 RESULTS
4 CONCLUSION
Session 9: Gear Design (I)
Pitch factor analysis for symmetric and asymmetric tooth gears
1 INTRODUCTION
2 DEFINITION OF GEAR TOOTH PROFILES
3 DEFINITION OF PITCH FACTORS
4 AREA OF EXISTENCE AND PITCH FACTORS
5 EXAMPLE OF APPLICATION
6 SUMMARY
Effects of the design parameters of involute gears generated by rack-cutters
ABSTRACT
1 INTRODUCTION
2 MATHEMATICAL MODEL OF THE RACK CUTTER
3 SYNTHESIS OF SPUR AND HELICAL GEARS
4 CONTINUITY OF MOTION
5 UNDERCUTTING AND OVERCUTTING
CONCLUSIONS
Graph theory based gear transmission chain configuration modelling
ABSTRACT
1 INTRODUCTION
2 TRANSMISSION CHAIN MODELING
3 GRAPH MODEL OF GEAR TRANSMISSION CHAIN
4 ANALYSIS BASED ON GRAPH MODEL
5 CONCLUSIONS
Session 10: Gear Noise and Vibration (I)
Noise characteristics of the simplified gear box by wind turbine load
ABSTRACT
1 INTRODUCTION
2 MATHEMATICAL MODEL
3 RESULTS AND DISCUSSION
4 CONCLUSION
Effects of contact ratios on mesh stiffness of helical gears for lower noise design
ABSTRACT
1 INTRODUCTION
2 THE METHOD FOR CALCULATING MESH STIFFNESS
3 THE FLUCTUATION OF CONTACT-LINE LENGTH
4 THE INFLUENTIAL FACTORS OF MESH STIFFNESS
5 CONCLUSIONS
ACKNOWLEDGMENT
Dynamic modeling of planetary gear transmission coupled with gearbox vibrations
ABSTRACT
1 INTRODUCTION
2 DYNAMIC MODELING
3 DYNAMICS ANALYSIS
4 CONCLUSIONS
ACKNOWLEDGEMENT
Session 11: Contact Analysis
Tribodynamics of differential hypoid gears
ABSTRACT
2 INTRODUCTION
3 DYNAMIC MODEL
4 FULL TRIBOLOGICAL MODEL
5 RESULTS AND DISCUSSION
6 CONCLUDING REMARKS
A comparison and experimental validation of gear contact models for spur and helical gears
1 INTRODUCTION
2 DECOMPOSING GEAR STIFFNESS
3 COMPARISON OF GEAR CONTACT MODELS
4 CONCLUSIONS AND FUTURE WORK
5 ACKNOWLEDGEMENTS
Smooth and non-smooth contact analysis of micro-surfaces of gear teeth
ABSTRACT
1. INTRODUCTION
2 SMOOTH-CONTACT ANALYSIS OF MICRO-TOOTH SURFACES
3 NON-SMOOTH CONTACT ANALYSIS OF MICRO-SURFACES OF GEAR TEETH
4 CONCLUSION
ACKNOWLEDGMENTS
Session 12: Gear Materials
Alternative to Ni-bearing carburizing steels
ABSTRACT
INTRODUCTION
1 GEAR MANUFACTURING
2 TEST METHOD
3 TEST RESULTS AND DISCUSSION
4 ONCLUSION
A new approach to evaluate materials for open gear
ABSTRACT
1 INTRODUCTION
2 SPECIFICATIONS OF THE TEST BENCH
3 TEST BENCH CONCEPTS
4 CALIBRATION
5 FIRST RESULTS
Load bearing capacity of sintered steel gears made of completely prealloy powder for automotive power transmission
ABSTRACT
1 INTRODUCTION
2 EXPERIMENTAL METHOD
3 RESULTS AND DISCUSSION
4 CONCLUSIONS
Session 13: Gear Design (II)
Development of a user friendly interface for design and analysis of parallel axes gears based on international standards including quasi static transmission error curves
ABSTRACT
1 INTRODUCTION
2 SPUR GEAR STRENGTH ANALYSIS
3 INTERNATIONAL PARALLEL AXES GEAR STANDARDS
4 FLOW CHART OF THE SOFTWARE
5 CASE STUDY
6 QUASI STATIC TRANSMISSION ERROR CURVE
7 DISCUSSIONS AND CONCLUSION
A study on the design of asymmetric spur gears in gear pump applications
ABSTRACT
1 INTRODUCTION
2 ASYMMETRIC GEAR MODEL
3 STRESS ANALYSIS USING FINITE ELEMENT METHOD
4 FLOWRATE ANALYSIS
5 RESULTS AND DISCUSSION
6 CONCLUSION
Research on gear integrated error curves
ABSTRACT
1 INTRODUCTION
2 THE GEAR INTEGRATED ERROR CURVE (GIEC)
3 THE GEAR PAIR INTEGRATION ERROR CURVE (GPIEC)
4 EXPERIMENTAL RESULTS
5 CONCLUSION
ACKNOWLEDGEMENT
The latest design technologies for gear devices with great transmission ratios
ABSTRACT
1 INTRODUCTION
2 STRUCTURES, ADVANTAGES AND BASIC PERFORMANCES OF THE GRG
3 THE LATEST DESIGN AND STRENGTH ANALYSIS TECHNOLOGIES FOR GRG
4 FUTURE TENDENCIES
5 CONCLUSIONS
Session 14: Gear Noise (II)
Dynamic and acoustic simulation of helicopters drive trains
ABSTRACT
1 INTRODUCTION
2 MAIN GEARBOXES NOISE ANALYSIS
3 MAIN GEARBOXES DYNAMIC AND NOISE SIMULATION
4 CONCLUSION
Hammering noise modelling – Nonlinear dynamics of a multi-stage gear train
ABSTRACT
1 INTRODUCTION
2 THE DYNAMIC MODEL OF THE GEAR SYSTEM
3 THE NUMERICAL METHOD
4 NUMERICAL EXAMPLE
5 CONCLUSIONS
ACKNOWLEDGEMENTS
Gear noise prediction in automotive transmissions
ABSTRACT
1 INTRODUCTION
2 METHOD FOR GEAR NOISE EVALUATION
3 USE OF THE PRESENTED METHOD TO PREDICT GEAR NOISE FOR AUTOMOTIVE TRANSMISSIONS
4 CONCLUSION
Session 15: Manufacturing and Design (II)
Local simulation of the specific material removal rate for generating gear grinding
ABSTRACT
1 INTRODUCTION
2 STATE OF THE ART
3 OBJECTIVE AND APPROACH
4 LOCAL APPROACH FOR CALCULATING THE SPECIFIC MATERIAL REMOVAL RATE FOR GENERATING GEAR GRINDING
5 GLOBAL APPROACH FOR CALCULATING THE SPECIFIC MATERIAL REMOVAL RATE FOR GENERATING GEAR GRINDING
6 SUMMARY AND OUTLOOK
Semi-analytical modelling of load distribution of side-fit involute splines
ABSTRACT
1 INTRODUCTION
2 SEMI-ANALYTICAL SPLINE CONTACT MODEL
3 MULTI-STEP DISCRETIZATION SOLUTION SCHEME
4 COMPARISON BETWEEN THE SEMI-ANALYTICAL AND DEFORMABLE-BODY MODELS
5 CONCLUSIONS
ACKNOWLEDGEMENTS
A new geometrically adaptive approach for tooth contact analysis of gear drives
ABSTRACT
1 INTRODUCTION
2 ALGORITHM TO COMPUTE THE TCA
3 ALGORITHM TO SOLVE THE POSITIONAL CONTACT PROBLEM
4 ALGORITHM TO COMPUTE THE BEARING CONTACT
5 TEST CASES AND DISCUSSION
6 CONCLUSIONS
A gear element in a wind-turbine gearbox
ABSTRACT
1 INTRODUCTION
2 DEFINITIONS
3 CHECKING THE DATA
4 ADDENDUM CORRECTIONS
5 THEORETICAL GEAR LOAD CALCULATION
6 GEAR MESH CONSTRUCTION
7 PLANETARY STAGE MESH CONSTRUCTION
8 VALIDATIONS
9 EXAMPLES
10 CONCLUSIONS
Session 16: Tooth Surfaces
Quality and surface of gears manufactured by free form milling with standard tools
ABSTRACT
1 INTRODUCTION
2 AIM OF STUDY AND APPROACH
3 TERMINOLOGY OF FREE FORM MILLING
4 ANALYISIS OF PROCESS CAPABILITY IN MILLING TRIALS
5 SUMMARY AND OUTLOOK
Fatigue performance of cylindrical gearing with DLC coatings
ABSTRACT
1 INTRODUCTION
2 DLC COATING
3 FATIGUE PERFORMANCE
4 CONCLUSIONS
On the simulation of simultaneous fatigue and mild wear during a micropitting gear test
ABSTRACT
1 INTRODUCTION
2 WEAR MODEL
3 FATIGUE MODEL
4 COMBINED WEAR AND FATIGUE DAMAGE MODEL
5 SIMULATION OF SURFACE DAMAGE DURING A GEAR TEST LOAD STAGE
6 CONCLUSION
ACKNOWLEDGMENTS
Restructuration of micro-topography of 2-D tooth surface including static transmission errors
ABSTRACT
1 INTRODUCTION
2 MICRO-TOPOGRAPHY OF 2-D TOOTH SURFACE
3 METHOD OF CALCULATING STATIC TRANSMISSION ERRORS (STE)
4 COUPLING OF MICRO-TOPOGRAPHY OF 2-D TOOTH SURFACE AND STE
5 CONCLUSIONS
ACKNOWLEDGMENTS
Session 17: Gear Design (III)
Synthesis of the base curves of non-circular gears via the return circle
ABSTRACT
1 INTRODUCTION
2 CONJUGATE PROFILES GENERATION AND RETURN CIRCLE
3 THE WORK OF ALLIEVI ON THE RETURN CIRCLE
4 BASE CIRCLE OF INVOLUTE CIRCULAR GEARS
5 BASE CURVES OF INVOLUTE NON-CIRCULAR GEARS
CONCLUSIONS
Integrated design of spiral bevel gear with low sensitivity and high contact ratio
ABSTRACT
1 INTRODUCTION
2 TOOTH CONTACT ANASYSIS ALGORITHM WITH CONSIDERATION OF DISLOCATIONS (ETCA)
2.2 Tooth contact analysis considered dislocations (ETCA) [8]
3. SYNTHESIS OPTIMIZATION CONSIDERED DISLOCATIONS
4 RESULTS AND ANALYSIS
5 CONCLUSIONS
An approach to transmission configuration in helicopter preliminary design
ABSTRACT
1 INTRODUCTION
2 CONFIGURATION DESIGN
3 SPATIAL SKELETON DESIGN AND STRUCTURE DESIGN
4 DESIGN EXAMPLE
5 CONCLUSIONS
Study on orthogonal variable transmission ratio face gear drive
ABSTRACT
1 INTRODUCTION
2 DESIGN OF THE FACE GEAR
3 THE SIMULATING DESIGN AND MANUFACTURING
4 MANUFACTURING AND EXPERIMENTAL
5 CONCLUSION
6 ACKNOWLEDGEMENTS
Session 18: Gear Dynamics (I)
A torsional dynamic model of multi-stage geared systems submitted to internal and external excitations
ABSTRACT
1 INTRODUCTION
2 STATE OF REFERENCE - RIGID-BODY MOTIONS
3 CHARACTERISTIC PERIODS AND MESH PHASINGS
4 TORSIONAL DYNAMIC MODEL OF MULTI-STAGE IDLER GEARS
5 APPLICATIONS
6 CONCLUSION
Study on load-related dynamic behavior of helical gears
ABSTRACT
1 INTRODUCTION
2 MODELING
3 RESULTS AND DISCUSSION
4 CONCLUSIONS
ACKNOWLEDGEMENT
Optimum profile modifications for the minimization of dynamic transmission error
1 INTRODUCTION
2 VALIDATION OF THE GEAR DYNAMICS MODEL USED FOR DTE OPTIMIZATION
3 DESCRIPTION OF MDOF MODEL USED IN OPTIMIZATION STUDIES
4 OPTIMIZATION
5 CONCLUSIONS
Dynamic analysis of high power gear transmission system in bucket wheel excavator
ABSTRACT
1 INTRODUCTION
2 MODEL AND EQUATION OF MOTION
3 NUMERICAL SIMULATION
4 CONCLUSION
Session 19: Power Losses – Efficiency (I)
Analysis of no-load dependent power losses in a planetary gear train by using thermal network method
ABSTRACT
1 INTRODUCTION
2 EXPERIMENTAL DEVICE
3 THERMAL NETWORK
4 MODEL VALIDATION
5 NO-LOAD DEPENDENT POWER LOSSES DISTRIBUTION
6 CONCLUSION
A methodology to predict power losses of planetary gear sets
ABSTRACT
1 INTRODUCTION
2 POWER LOSS PREDICTION METHODOLOGY
3 COMPARISON TO EXPERIMENTS
4 PLANETARY GEAR SET POWER LOSS COMPONENTS
5 CONCLUSIONS
Power loss in a planetary gearbox
ABSTRACT
1 INTRODUCTION
2 WIND TURBINE GEAR OILS
3 GEARBOX TEST RIG
4 PLANETARY GEARBOX
5 EXPERIMENTAL TESTS
6 POWER LOSS MODEL
7 NUMERICAL RESULTS
8 CONCLUSIONS
ACKNOWLEDGEMENTS
Power analysis of two-dof epicyclic gear transmission and experimental validation
ABSTRACT
1 INTRODUCTION
2 BACKGROUND THEORIES
3 ANALYSIS OF PROTOTYPE
4 EXPERIMENTAL RESULTS AND COMPARISON
5 CONCLUSIONS
APPENDICES
Session 20: Durability – Fatigue (I)
Some theoretical and simulation results on the study of the tooth flank breakage in cylindrical gears
ABSTRACT
1 INTRODUCTION
2 DESCRIPTION OF THE CALCULATION METHOD
3 APPLICATION
4 CONCLUSION
Tooth flank fracture – basic principles and calculation model for a sub surface initiated fatigue failure mode of case hardened gears
ABSTRACT
1 INTRODUCTION
2 FAILURE MECHANISM OF TOOTH FLANK FRACTURE
3 INFLUENCE FACTORS ON THE FAILURE TYPE TOOTH FLANK FRACTURE
4 CALCULATION MODEL
5 CONCLUSIONS
Determination of bending strength of sintered spur gear made of SINT D30 powder metal
ABSTRACT
1 INTRODUCTION
2 FEM MODEL
3 EXPERIMENTAL TESTING
4 RESULTS
5 PRELIMINARY TESTING
6 DISCUSSION AND CONCLUSIONS
From failure analysis to power transmission design
ABSTRACT
1 INTRODUCTION
2 FIRST PART OF EXPERTISE
3 SECOND PART OF EXPERTISE
4 DECISIONS
5 TOOTH FLANK MODIFICATIONS OF PTI GEARBOX
6 CONTROLS AFTER MODIFICATIONS
7 SYNTHESIS
Session 21: Gear Lubrication (I)
FZG gearboxes lubricated with different formulations of polyalphaolefin wind turbine gear oils
ABSTRACT
1 INTRODUCTION
2 WIND TURBINE GEAR OILS
3 TEST RIG
4 DRIVE AND TEST GEARBOXES
5 TEST PROCEDURE
6 EXPERIMENTAL RESULTS
7 GEARBOXES EFFICIENCY
8 TORQUE LOSS MODEL
9 COEFFICIENT OF FRICTION IN MESHING GEARS
CONCLUSIONS
ACKNOWLEDGEMENTS
Aspects of lubrication at the wave generator - flexspline interface in strain wave gearing units
ABSTRACT
NOTATION
1 INTRODUCTION
2 CONING - ITS FORMATION AND VARIATIONS AT WG-FS INTERFACE OF HD
3 HYDRODYNAMIC LUBRICATION EQUATION SUITABLE FOR WG-FS INTERFACE
4 DERIVATION OF LUBRICATION CHARACTERISTICS PARAMETERS
5 CONCLUDING REMARKS
ACKNOWLEDGEMENT
Transient EHL analysis of helical gears
1 ABSTRACT
2 INTRODUCTION
3 EHL MODELLING OF HELICAL GEAR CONTACT
4 RESULTS
5 CONCLUSIONS
6 ACKNOWLEDGEMENTS
A discussion on feeding cooler lubricant to the mesh exit region of a helical gear pair based on flow visualization experiments
ABSTRACT
1 INTRODUCTION
2 EXPERIMENTAL CONDITIONS AND METHODS
3 SUMMARY OF FLUID MOVEMENT OBSERVATION
4 DISCUSSIONS
5 SUMMARY
ACKNOWLEDGEMENTS
Session 22: Gear Dynamics (II)
Dynamic stress recovery in gear train simulations using elastic multibody systems
ABSTRACT
1 STRESS CALCULATIONS IN GEARS
2 MODELLING APPROACH
3 EMBS SIMULATIONS AND STRESS CALCULATIONS
4 SUMMARY
Impact of indexing errors on spur gear dynamics
ABSTRACT
1 INTRODUCTION
2 DYNAMIC MODEL FORMULATION
3 EXPERIMENTAL TRANSMISSION ERROR MEASUREMENTS
4 RESULTS AND DISCUSSION
5 CONCLUSIONS
Comparative analysis of the hypoid geared rotor system dynamics applying dissimilar tooth meshing formulations
ABSTRACT
1 INTRODUCTION
2 MESH MODELS
3 HYPOID GEARED ROTOR SYSTEM DYNAMICS
4 CONCLUSION
Session 23: Power Losses – Efficiency (II)
Study of the influence of the design parameters on the efficiency of spur gears
ABSTRACT
1 INTRODUCTION
2 DESCRIPTION OF THE MODEL OF EFFICIENCY
3 INFLUENCE OF THE DESIGN PARAMETERS
4 CONCLUSIONS
ACKNOWLEDGMENT
Effect of assembly errors in back-to-back gear efficiency testing
ABSTRACT
1 INTRODUCTION
2 METHOD AND MATERIALS
3 RESULTS
4 DISCUSSION
5 CONCLUSIONS
Efficiency of a cycloid reducer
ABSTRACT
1 INTRODUCTION
2 CYCLOID REDUCER
3 RESULTS
4 CONCLUSIONS
Session 24: Durability – Fatigue (II)
Load stresses and residual stresses in the tooth interior
ABSTRACT
1 INTRODUCTION
2 SIMULATION OF LOAD STRESSES
3 RESIDUAL STRESSES
4 CONCLUSIONS
Development of a granular cohesive model for Rolling Contact Fatigue analysis: influence of numerical parameters
ABSTRACT
1 INTRODUCTION
2 GRANULAR COHESIVE FINITE ELEMENT MODEL
3 COHESIVE ELEMENT NUMERICAL BEHAVIOR ANALYSIS
4 PRELIMINARY RESULTS AND INFLUENCE OF DAMAGE MODELING
CONCLUSION
Crush of wear debris by tooth engagement and tooth flank damage
1 INTRODUCTION
2 OBVIOUS TRACE OF CRUSH OF FOREIGN OBJECTS
3 PECULIAR TOOTH FLANK FAILURE
4 CRUSH OF WEAR DEBRIS
5 OUTLOOK OF TOOTH FLANK AFTER CRUSHING WEAR DEBRIS
6 INFLUENCE OF SIZE AND HARDNESS OF WEAR DEBRIS
7 PROCESS OF DAMAGE CONCERNING CRUSH OF WEAR DEBRIS
8 CONCLUSIONS
ACKNOWLEDGEMENT
Root stresses and bending fatigue strength of thin-rimmed helical gears (helix angle β0 = 10, 20 and 30º)
1 INTRODUCTION
2 EXPERIMENTAL PROCEDURE AND APPARATUS
3 EXPERIMENTAL RESULTS AND DISCUSSIONS
4 CONCLUSIONS
ACKNOWLEDGEMENT
Session 25: Gear Design (IV)
High-conforming gearing: Kinematics and geometry
ABSTRACT
1 INTRODUCTION
2 KINEMATICS AND GEOMETRY OF HIGH-CONFORMING GEARING: - I
3 NOVIKOV BOUNDARY CIRCLE
4 KINEMATICS AND GEOMETRY OF HIGH-CONFORMING GEARING: - II
5 FUNDAMENTAL DESIGN PARAMETERS OF HIGH-CONFORMING GEARING
6 POSSIBLE TOOTH GEOMETRIES IN HIGH-CONFORMING GEARING
7 CRITICAL DEGREE OF CONFORMITY AT A POINT OF CONTACT OF THE TOOTH FLANKS IN HIGH-CONFORMING GEARING
8 ON MACHINING GEARS FOR HIGH-CONFORMING GEARING
CONCLUSION
A design guide for very small power transmission gears considering tooth surface strength and manufacturing cost
ABSTRACT
1 INTRODUCTION
2 NONLINEAR SIMULATION MODEL
3 SPECIFICATIONS OF ANALYSED OBJECTS
4 CALCULATED RESULTS AND CONSIDERATIONS
5 EQUATION FOR COST ESTIMATION
6 GESIGN GUIDE CONSIDERING TOOTH STRENGTH AND MANUFACTURING COST
7 CONCLUSION
ACKNOWLEDGMENTS
How to get most realistic efficiency calculation for gearboxes?
1 INTRODUCTION
2 APPLICATION OF THERMAL RATING FOR INDUSTRIAL GEARBOXES
3 EFFICIENCY CALCULATION OF AUTOMOTIVE TRANSMISSIONS
4 SUMMARY
Session 26: Gear Dynamics (III)
A simplified 3D dynamic model of helical and double-helical planetary gears to study the influence of some usual position and geometrical errors
ABSTRACT
1 INTRODUCTION
2PLANETARY GEAR MODEL
3 DYNAMIC RESULTS
4 CONCLUSION
5 ACKNOWLEDGEMENT
The analysis of dynamic load coefficients of double-helical planetary gear sets
ABSTRACT
1 INTRODUCTION
2 DYNAMIC MODEL AND EQUATIONS
3 RESULTS AND ANALYSIS
4 CONCLUSION
Back to back planetary gearbox: Influence of non-stationary operating conditions
ABSTRACT
1 INTRODUCTION
2 DESCRIPTION OF THE TEST BENCH
3 NUMERICAL MODEL
4 NUMERICAL SIMULATIONS
CONCLUSION
ACKNOWLEDGEMENTS
Session 27: Precision
Study on evaluation system of gear accuracy based on statistical analysis
ABSTRACT
1 INTRODUCTION
2 THE PRINCIPLE OF GEAR ACCURACY EVALUATION BASED ON STATISTICAL ANALYSIS
3 DESIGN OF THE DIGITAL SIMULATION EXPERIMENTS
4 EXPERIMENT DATA AND ANALYSIS
5 CONCLUSION
ACKNOWLEDGEMENT
Robust pre-synchronization in heavy truck transmissions
ABSTRACT
1 INTRODUCTION
2 THE SYNCHRONISATION PROCESS
3 SIMULATION MODEL
4 RESULTS
5 DISCUSSION
6 CONCLUSION AND FUTURE WORK
7 ACKNOWLEDGMENTS
Identification of radii of tooth root and pitch deviations from whole circumference scanning measurement of cylindrical gears
ABSTRACT
1 INTRODUCTION
2 CONSTRUCTION OF DEVELOPED GMM
3 MEASUREMENT STRATEGY AND PROCEDURE
4 RESULTS AND DISCUSSIONS
5 CONCLUSIONS
Session 28: Durability – Fatigue (III)
Online and real-time damage calculation in automotive transmissions Application to remaining service life estimation
1 INTRODUCTION
2 MODEL
3 SIMULATIONS AND RESULTS
4 PERSPECTIVES
5 CONCLUSION
Effects of case depth, face width and intergranular oxidation on bending fatigue strength of case-carburized SNC815 and SCM415 steel spur gears
1 INTRODUCTION
2 EXPERIMENTAL PROCEDURE AND APPARATUS
3 EXPERIMENTAL RESULTS AND DISCUSSIONS
4 CONCLUSIONS
Determination of maximum loads for drivetrain components in thrusters using flexible multibodysystem models
ABSTRACT
1 INTRODUCTION
2 BASICS OF DRIVETRAIN SIMULATION
3 ASSEMBLY OF THE SIMULATION MODEL OF THE THRUSTER
4 ANALYSIS OF THE THRUSTER DRIVETRAIN IN THE FREQUENCY DOMAIN
5 ANALYSIS OF THE THRUSTER DRIVETRAIN IN THE TIME DOMAIN
6 CONCLUSIO
No. of pages: 200
Language: English
Edition: 1
Published: September 18, 2014
Imprint: Chandos Publishing
eBook ISBN: 9781782421955
PV
Philippe Velex
INSA Lyon, France
Affiliations and expertise
INSA Lyon is a top Engineering University in Europe. LaMCoS is associated with the French National Centre for Research (UMR CNRS 5259) and one of the leading research laboratories in Mechanical Engineering. In cooperation with ECAM Lyon, INSA Lyon is the most important French research centre on Mechanical Transmissions.
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