hw_04sol - De artment of Mechanical En ineerin MICHIGAN...

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Unformatted text preview: De artment of Mechanical En ineerin MICHIGAN STATE UNIVERSITY Figure 4-1. Half-car model schematic, braking mode. Mass, m: 1814 kg Moment of inertia, J c: 2592 kg-m2 Spring stiffness, k: 44 kam Damper, b: 3750 Ns/m Distance from c to suspensions, d: 1.5 m Height of c above ground, h: 0.6 m Drag plus friction forces: dissipate 20 kW at 100 krm’hr. Assume linear. Table. 4-1. Hair-Par mm‘lpl nnrnmofprc and data ($6 /I W 1—33 WA V/ Z L 2’ ((0/4 P l>£ %F@) “20 R C V931 4w: X4L10FP§ alga/6* b 321 1’ 1 x“ at V4 “6) gay \/r Lt) Inpwg; V;UC\)V(-UC) va‘ GUY bow W . mel \CPS Vrs M. NM £03 MVQLO W G U)[)) WIWCW de%, FUESJRS .. .WtfimwéPWMfme 6W3 t ‘ 3mm oi (Dad VQHLOLQ. %‘W\U \CLJUQ A (Md 'Y"waf'\md3 «v- \\Z h?” ‘ :5 ~l< '3»? O x m “M: 2 A : O —2§__b d5 -4} ._ ____ 3—C- \ “’0‘ o O \ ¢$ % O Q ,L ~_\2 -—b B M W\ 7h 2 it) ~15» ? AJC _ are, 0 l o O o l W. V% W 8, r: w __ \K v JP owl u: ~C \qu ' " i ‘. ': (1‘3 Fifi-5.153%“. s {fa rifle-dos 2d . 6 E; r: I"? PC? Revised: 02/20/03 RCR car modes in 2d v heave and pitch motion. Barometers 3c —of—iner:ia abouL center of mass prLeh exk '— iron: spricg siiffne :: reer spring stiffness shock damping coefficient f— 1.5; e discance from CG to front suspension 14 1.5; % distahce from CG to rear suspension ._ soc“ LOL I;_e sedge variable definitions _. 7 -kf/m —kr£m ; df*kf/Jp —dr*kr/Jp ; d; 0]; .5104 —fi.5003 r |A lnl IHI x . I u u u v I O\ ._4 I 6.6512i 6.6512i 8 _1131 8 _1131 x- J% .»-. r L.- I: : 'x'tfi *‘LJ 2 2 4. l:- .J‘::. K) OWL.” C} |-' (—3 C) (—3 (JJ L1"- 1 '-J r C.) CO CECE) \.AJ (—3 {‘3 U.U' . I d i I I 0-66: ‘wfl’ I ll'l (’ .- w R J: 0 4 1 -. M #3 I '. D. i ' :7: I I 3' 0.2 J I /\ {I 0' I f $/" “a ““—;——;——"—m— — ———— ‘— 0 .2 i W19 ! \/ _0I4' ' | . . —1—__ i _—i__ _. 0 0.5 1 1.5 2 2.5 3 3.5 4 0.1; 0.05 - CD I _ deltafdeltar -0_05 — -0.1 -0.15 '--- 0.2 i— fl, velz wpltch C) m o 1"- l7 \\ I \ i ‘i ‘1 :\ i‘. 21' -,.I r Iil ll _O_8 i _ __ ._ ' | I _. 1.. _,_________ 0 0.5 1 1.5 2 2.5 3 time d%[o)=r*0tz) 6r[0150;2, all/(foob‘ V5210) :30) wPCb)Z-O, deltaf deltar C) \\\ i I If I: H h l -0.05' ~01 I." -O.15: ‘02 _ 1. | ' = | l O 0.5 1 1.5 2 2.5 3 3.5 time Arm-DE W : {ac/flhm) (Mgraz. Vow fich. “filthy—>0 ) LOP C0) :0 - ...
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This note was uploaded on 07/25/2008 for the course ME 457 taught by Professor Rosenberg during the Spring '07 term at Michigan State University.

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hw_04sol - De artment of Mechanical En ineerin MICHIGAN...

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