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Appendix B: Fortran tyre model subroutines 477 C C C C C C C C C C C A5 0.0 A6 .458114E-04 A7 .468222 A8 .381896E-06 A9 .516209E-02 A10 0.00 A11 -.366375E-01 A12 -.568859E02 A13 0.00 A14 0.00 A15 0.00 A16 0.00 A17 .379913 C0 .235000E01 C1 .266333E-05 C2 .249270E-02 C3 -.159794E-03 C4 -.254777E-01 C5 .142145E-03 C6 0.00 C7 .197277E-07 C8 -.359537E-03 C9 .630223 C10 0.00 C11 .120220E-06 C12 .275062E-02 C13 0.00 C14 -.172742E-02 C15 .544249E01 C16 0.00 C17 0.00 C18 0.00 C19 0.00 C20 0.00 EXECUTABLE CODE Extract data from input arrays SLIP CPROP(1) DEFL CPROP(4) DEFLD CPROP(5) WSPIN CPROP(8) AMASS MPROP(1) R2 TPROP(2) CZ TPROP(3)
478 Multibody Systems Approach to Vechicle Dynamics C C C C C C C C C C C C C C C C C C C C C C C CS TPROP(4) CA TPROP(5) CR TPROP(7) DZ TPROP(8) U TPROP(11) Convert sign on alpha RALPHA CPROP(2) RGAMMA CPROP (3) CG TPROP (6) ALPHA -RALPHA GAMMA RGAMMA Initialize force values FX 0.D0 FY 0.D0 FZ 0.D0 TY 0.D0 TZ 0.D0 IF(DEFL .LE. 0.D0) THEN GOTO 1000 ENDIF Calculate normal loads due to stiffness (always .LE. zero) FZDEFL -DEFL*CZ Calculate normal loads due to damping FZDAMP -2.D0*SQRT(AMASS*CZ)*DZ*(DEFLD) Calculate total normal force (fz) FZ MIN (0.0D0, (FZDEFLFZDAMP) ) Convert to kN and change sign FZP -FZ Compute longitudinal force IF(ABS(SLIP) .LE. ABS(SSTAR)) THEN FX -CS*SLIP ELSE FX1 U*ABS(FZ) FX2 (U*FZ)**2/(4.D0*ABS(SLIP)*CS) FX -(FX1-FX2)*SIGN(1.0D0,SLIP) ENDIF
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Multibody Systems Approach to Vehic
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Multibody Systems Approach to Vehic
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Contents Preface Acknowledgements N
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Contents vii 4.10.1 Problem definit
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Contents ix 8.2.1 Active suspension
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Preface This book is intended to br
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Preface xiii vehicle design process
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Acknowledgements Mike Blundell In d
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Nomenclature xvii {z I } 1 Unit vec
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Nomenclature xix O n Frame for part
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Nomenclature xxi p Magnitude of re
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1 Introduction The most cost-effect
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Introduction 3 subsequent ‘classi
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Introduction 5 Fig. 1.4 Linearity:
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Introduction 7 While apparently a s
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Introduction 9 3. The body yaws (ro
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Introduction 11 Aspiration Definiti
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Introduction 13 Decomposition: Synt
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Introduction 15 The best multibody
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Introduction 17 shows good correlat
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Introduction 19 generated in numeri
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Introduction 21 1.9 Benchmarking ex
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2 Kinematics and dynamics of rigid
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Kinematics and dynamics of rigid bo
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3 Multibody systems simulation soft
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Multibody systems simulation softwa
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4 Modelling and analysis of suspens
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Tyre characteristics and modelling
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7 Simulation output and interpretat
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Simulation output and interpretatio
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Page 534 and 535: Index Abuse loads, 148 3 g bump, 14
Page 536 and 537: Index 513 Elk Test, 1 El-Nasher, 29
Page 538 and 539: Index 515 generalised translational
Page 540 and 541: Index 517 steer axis inclination, 1
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