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Record Nr. |
UNINA9910551842203321 |
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Autore |
Pütz Ralph |
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Titolo |
Race car handling optimization : magic numbers to better understand a race car / / Ralph Pütz, Ton Serné |
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Pubbl/distr/stampa |
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Wiesbaden, Germany : , : Springer, , [2022] |
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©2022 |
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ISBN |
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Descrizione fisica |
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1 online resource (363 pages) |
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Disciplina |
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Soggetti |
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Automobile racing - Training |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di contenuto |
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Intro -- Introduction -- Contents -- 1 Measurement of the Setup -- Abstract -- 1.1 Main Dimensions and Centre of Gravity -- 1.2 Static Axle Loads and Horizontal Centre of Gravity -- 1.3 Vertical Centre of Gravity -- 1.4 Moment of Inertia at Vertical Axis -- 1.5 Suspension Measurement -- 1.5.1 Camber -- 1.5.2 Track -- 1.5.3 Caster -- 1.5.4 Kingpin Inclination (KPI) and Scrub Radius -- 1.5.5 Steering Angle and Toe Angle Difference -- 1.5.6 Motion Ratio -- 1.6 Aerodynamic Parameters Aerodynamic Parameters -- 1.7 Summary -- Reference -- 2 Introduction and Definitions -- Abstract -- 2.1 Significance of Handling and Roadholding -- 2.2 Vehicle Movements and Degrees of Freedom -- 2.2.1 The five Phases of a Corner -- 2.2.2 Description of the five Phases -- 2.3 Understeer & -- Oversteer -- 2.3.1 Centripetal Force or Lateral Force -- 2.3.2 Centrifugal Force (or: The Invisible Hand...) -- 2.3.3 Balance -- 2.4 Determination of Understeer and Oversteer -- 2.4.1 Method 1 -- 2.4.2 Method 2 -- References -- 3 Tyres -- Abstract -- 3.1 Non-Linear Characteristic of the Tyre -- 3.2 The Coefficient of Friction -- 3.3 The Anti-Roll bar as a Means for Influencing Load Transfer -- 3.4 "Kamm's Circle"-or More Precisely: The Force Ellipse -- 3.5 The Influence of Tyre Pressure and Temperature -- 3.6 Diagonal Versus Radial Tyres -- 3.7 Interpretation of Tyre Wear -- References -- 4 Shock Absorbers -- Abstract -- 4.1 Damper Types -- 4.2 Damper Characteristics -- 4.3 The Vehicle as a Reduced Quarter-Vehicle Model -- 4.4 Assessment of the Dampers Under Racing Conditions -- Further |
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Readings -- 5 Geometry -- Abstract -- 5.1 Suspension geometry and its significance -- 5.2 Kingpin Inclination and Caster -- 5.3 Toe-In and Toe-Out -- 5.4 Roll Centre and Pitch Centre -- 5.5 Geometry, a Fascinating Compromise -- 5.6 Effect of Forces in the Suspension. |
5.6.1 Load Transfer, Roll and Jacking Forces During Cornering -- 5.6.2 Load Transfer During Braking and Acceleration -- 5.7 Ackermann's Principle -- 5.8 Analytical Determination of the Motion of a Double-Wishbone Suspension -- Reference -- 6 Springs -- Abstract -- 6.1 Reasons for Springs in Suspension -- 6.2 Spring Rate and Spring Types -- 6.3 Calculation of a Spring -- 6.4 Roll and Pitch Resistances -- 6.5 Weighing -- 6.6 Anti-Roll Bars -- 6.6.1 Adjustable Anti-Roll bar -- 6.6.2 Conventional U-shaped Anti Roll bar -- Reference -- 7 Differentials -- Abstract -- 7.1 Need for Differentials while Cornering -- 7.2 Locked Differentials Versus Open Differentials -- 7.2.1 General Information -- 7.2.2 Disadvantages of Open Differentials -- 7.2.3 Locked Differentials -- 7.3 Analysis of the Effect of Torque Bias/Locked Differentials -- References -- 8 Aerodynamics -- Abstract -- 8.1 Downforce Through Aerodynamic Measures -- 8.2 Basics in Fluid Technology -- 8.2.1 Energy and Mass Conservation During Flow -- 8.2.2 Laminar and Turbulent Flow and Boundary Layer -- 8.3 Drag and Downforce -- 8.4 Measures for Generating Downforce -- 8.4.1 Gurney Flaps and Winglets -- 8.4.2 Acceleration of the Flow Under the Vehicle Floor and Diffusor -- 8.4.3 Vortex Generators (Turbulators, Canard Flaps) and the Golf Ball Effect -- 8.5 Optimum in Aerodynamic Balance -- 8.6 Assessment of Downforce and Drag from Race Data Acquisition -- 8.6.1 Analysis of the Dynamic Ride Heights on the Front and Rear Axles -- 8.6.2 Analysis of the Movement of Suspension on the Front and Rear Axles -- 8.6.3 Creation of Aero Maps -- 8.6.4 Achievable Maximum Speed on a flat straight -- 8.7 Application of Computational Fluid Dynamics -- Further reading -- 9 Test Drives -- Abstract -- 9.1 The Theory is internalized-now Practice follows -- 9.2 The Five Characteristic Phases of a Corner at a Glance. |
9.3 Definitions of Different Tests -- 9.4 Specific Targeted Tests -- 9.4.1 Damper Characteristics -- 9.4.2 Load Transfer -- 9.4.3 Distribution of Roll Resistance -- 9.4.4 Weight Distribution and Balance -- 9.4.5 Aerodynamics -- 9.5 Tyre Modelling from Race Data -- 9.5.1 The Purpose of Tyre Modelling -- 9.5.2 Tyre Modelling by ChassisSim -- 9.6 Tests for Amateur Teams -- Reference -- 10 Simulation of the Handling Dynamics -- Abstract -- 10.1 CarMaker -- 10.1.1 Subsystem Vehicle Including Tyres -- 10.1.2 Test Runs, Driving Manoeuvres and Driver -- 10.1.3 Implementation and Documentation of the Simulation -- 10.2 Chassis Sim -- 10.2.1 Introduction -- 10.2.2 Toolboxes -- 10.2.3 The Importance of Transient Simulations -- 11 Magic Numbers and Other Important Calculations -- Abstract -- Acknowledgements -- Conversion Tables -- Index. |
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