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Appendix B: Fortran tyre model subroutines 475 TZLG0ARRAY(1) CALL CUBSPL (GAMMA,FZL,400,0,ARRAY,ERRFLG) TZLG1ARRAY(1) TZLGTZLG1-TZLG0 TZLTZLATZLG C C Convert to Nmm C TZTZL*1000.0 C C Copy the calculated values for FX, FY, FZ, TY & TZ to FSAE C and TSAE arrays C 1000 FSAE(1) FX FSAE(2) FY FSAE(3) FZ C TSAE(1) 0.0 TSAE(2) 0.0 TSAE(3) TZ C FPROP(1) 0.0 FPROP(2) 0.0 C RETURN END B.2 ‘Magic Formula’ tyre model (version 3) subroutine SUBROUTINE TIRSUB (ID, TIME, T0, CPROP, TPROP, MPROP, & PAR, NPAR, STR, NSTR, DFLAG, & IFLAG, FSAE, TSAE, FPROP) C C This program is part of the CUTyre system - M Blundell, Feb 1997 C This version is based on the Magic Formula tyre model (Version 3). C Coefficients are for TYRE B C C The coefficients in the model assume the following units: C slip angle: radians C camber angle: radians C slip ratio % C Fz (load): N C Fy and Fx: N C Tz: Nm C Note sign changes between Paceka formulation and SAE convention C If camber is not included set A5,A10,A13,A14,A15,A16 C and C6,C10,C13,C16,C17,C18,C19,C20 to zero C C Inputs: C
476 Multibody Systems Approach to Vechicle Dynamics INTEGER ID, NPAR, NSTR DOUBLE PRECISION TIME, T0 DOUBLE PRECISION CPROP(*), TPROP(*), MPROP(*), PAR(*) CHARACTER * 80 STR(*) LOGICAL DFLAG, IFLAG C C Outputs: C DOUBLE PRECISION FSAE(*), TSAE(*), FPROP(*) C C Local Variables: C DOUBLE PRECISION SLIP, ALPHA, DEFL, DEFLD DOUBLE PRECISION R2, CZ, CS, CA, CR, DZ, AMASS, WSPIN C C C DOUBLE PRECISION GAMMA,CG,RALPHA,RGAMMA,FXP, FZP,FYP,TZP DOUBLE PRECISION A0,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10, A11,A12,A13 DOUBLE PRECISION A14,A15,A16,A17,SLIPCENT DOUBLE PRECISION C0,C1,C2,C3,C4,C5,C6,C7,C8,C9,C10,C11, C12,C13 DOUBLE PRECISION C14,C15,C16,C17,C18,C19,C20 DOUBLE PRECISION CFY,DFY,EFY,SHFY,SVFY,PHIFY DOUBLE PRECISION CTZ,DTZ,ETZ,BTZ,SHTZ,SVTZ,PHITZ DOUBLE PRECISION CFX,DFX,EFX,BFX,SHFX,SVFX,PHIFX, DUMTZ,DUMFY C C C C C INTEGER IORD DOUBLE PRECISION ZERO, ONE, SCFACT, DELMAX DOUBLE PRECISION FX, FY, FZ, FX1, FX2, TY, TZ, H, ASTAR, SSTAR DOUBLE PRECISION U, FZDAMP, FZDEFL, WSPNMX, DTOR, RTOD LOGICAL PARAMETER PARAMETER PARAMETER PARAMETER PARAMETER PARAMETER ERFLG Define Pacejka Coefficients A0 .103370E01 A1 -.224482E-05 A2 .132185E01 A3 .604035E05 A4 .877727E04 (ZERO0.0) (ONE1.0) (IORD0) (WSPNMX5.0D-1) (DTOR0.017453292) (RTOD57.29577951)
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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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Modelling and analysis of suspensio
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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 526 and 527: References 503 Blundell, M.V. The m
Page 528 and 529: References 505 Hudi, J. AMIGO - A m
Page 530 and 531: References 507 Palmer, D. Course no
Page 532 and 533: References 509 European ADAMS News
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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