How to get the K'and K?F+AFC+ △ QaAQ= k,sASDSAsAsAsmnnIAs△F,n=△QmG-2m= k.△s,mnF+△F2mF= k,=AsnmAFzmmk= K,AstK,=2K, = 2k,三SASn
m n FZ Z Δ F 2 Gu Fa Δ Fa Q Δ Q s s Q k s n s m s Δ s Δ t F Z n Q m k s s s m s s s n m F k Z t 2 s s n m k 2 s t Z l F m k K s n 2 s 2 2 l l m K K k n Δ t s Δ s s Δ s Δ t s n m s How to get the Kl ’ and Kl ?
How to get thek'and K?AQ.8S, = AFz.SSAFAOkS(ss,)?asSSSs= NFz =△Q=kSs,Ss(: △Q= k,AS, = k,SS,△QAFz =k,AS, =k,sS)Gs(ss.)Qki-8S =k.Ss8StS85.k, =k,m1△FmnSsm-Springdeflection（△Q）6S= 2k,(=)K, = 2K, = 2kTiredeflection（△Fz)oSss,nk,SpringStiffness
2 ' ' 2 ' 2 ' ( ) , ( ) s Z t s s Z s t t s s s s Z l t l t s l t s t s l s t s t Q S F S S S F Q k S S Q k S k S F k S k S S k S k S S k k S S m S n （ ） ' 2 2 2 2 ( ) 2 ( ) s l l s s t S m K K k k S n s s S Q k Z l t F k S How to get the kl ’ and Kl ? δSS——Spring deflection （△Q） δSt——Tire deflection （△Fz） ks ——Spring Stiffness
（悬架系统角刚度）4.SuspensionRollStiffnessDefinition:Suspension Roll Stiffness is the ratio ofsuspension torque to suspension roll angledM2dO.B/2dorKor亨Ki号kig do=dodordddd亨B-2B2B(K)dd,).B2KorddK,B2KorOm2B
Definition: Suspension Roll Stiffness is the ratio of suspension torque to suspension roll angle. ' ' 2 2 / 2 ( ) 2 1 2 r r r l r r r r l dM dQ B K d d B K d B K d K K B 4. Suspension Roll Stiffness （悬架系统角刚度） dQ
d5.SuspensionRollAngleRoll Stiffness is equal to the front suspension roll stiffness plusrearsuspensionroll stiffness.ZMRoll一Moment(车厢侧倾力矩)ΦZKarRoll一Stiffness(整车系统角刚度EKo, = Kafionm +Kprear→ Kofront →KIfrontZ1KorK=Krearlrear
1）Roll Stiffness is equal to the front suspension roll stiffness plus rear suspension roll stiffness. ( ) r r Roll Moment M Roll Stiffness K 车厢侧倾力矩 （整车系统角刚度） ' ' r front rear lfront front r lrear rear K K K K K K K K 5. Suspension Roll Angle——Φr
2) Roll Moment-MA.caused by thelateral force on sprung mass（悬挂（簧载）质量离心力引起的侧倾力矩）M, = F, hmsprung massCFs, =m, a, =m,RM1
A. caused by the lateral force on sprung mass ——M1 （悬挂(簧载)质量离心力引起的侧倾力矩） 1 2 j sy s y s M F h u F m a m R 2）Roll Moment ms—— sprung mass