客车滑行能力的仿真评估

1,2(11,400067;21,400044):,,,,,:;;Abstract:Theslidingabilityofthebusisoneoftheimportantperformance.However,thepresentalgorithmisrelativelysimple,anditscaculatingvaluesarebiggerthantheactualsituation,whichmisleaddesigners.Moreover,thereasonthatthebusslidingabilityispositivecorrelationtoitsmasscantbeinterpreted.Becauseofthese,thispaperraisesasimula2tingevaluationmethodalmostcompletelyapproachingtherealitytosolvethisproblem.Keywords:Bus;Slidingability;Simulationevaluation:U46111:A:100623331(2004)0320007203,,,;,,,,,,,,,,,,,,,,1,:,Ff+Fj+Fw=0,N(1)(1),Fj=Mj,=1+1M(Iwr2+Ifi2gi20nTr2),,,1;Ff=fZf=fMg;Fw=CDAV2/21.15,,j=-gf,m/s2(2)f=a+bv,j=-g(a+bv),m/s2(3)(3)vb,vm/s,bb316(3),v0t=t0dt=0v01jdv=1gv00dva+bv,s(4)S=S0dS=t0vdt=0v0vdvj=v00vdvga+gbv=1gv00vdva+bv,m(5),,b=0,t=1gav00dv=1ga[v]v00=v0ga,s(6)S=1gav00vdv=1ga[12v2]v00=v202ga,m(7)(6)(7),f,,b0,t=t0dt=v00dvga+gbv=1gb[ln(a+bv0)-lna]=1gbln(1+bav0)(8)S=1gb2[a+bv-aln(a+bv)]v00=1gb2[bv0-aln(1+bav0)](9)(8)(9),,,720053©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,j=-(ga+gbv+CDAv2/(1.632M)=-(ga+gbv+gcv2),m/s2(10),gc=CDA/(1.632M),CD,A,M;vm/s,v0t=t0dt=v00dvga+gbv+gcv2S=0v0vdvj=v00vdvga+gbv+gcv2b2-4ac0,t=1gv00dva+bv+cv2=1gb2-4acln(2cv0+b-b2-4ac)(b+b2-4ac)(2cv0+b+b2-4ac)(b-b2-4ac)(11)s=12gc{ln(a+bv0+cv20)-bb2-4acln(2cv0+b-b2-4ac)(b+b2-4ac)(2cv0+b+b2-4ac)(b-b2-4ac)}(12)b2-4ac0,t=1gv0dva+bv+cv2=2g4ac-b2(arctg2cv0+b4ac-b2-arctgb4ac-b2)(13)S=12gc{ln(a+bv0+cv20)-2b4ac-b2(arctg2cv0+b4ac-b2-arctgb4ac-b2)}(14)gc=CDA/(1.632M)c=CDA/(1.632Mg)=K/(Mg),K=CDA/1.632,(12)(14)S=M2Kln(a+bv0+cv20)-Mg2Kbt(15)2c=CDA/(1.632Mg),,(11)(15)M,(10):,(6)(9));,,,,,,,;+12m,(6)(9)(11)(14),:15940kg,016,312m2146m,a=0.007249b=0.000052154233.6(vm/s);:Cum2minsM11-C290,JL420I,ZFS6290,,RockwellRC2262160,11R2215216PRVB,1150km/s,(6)(7)t1S1,(8)(9)t2S2,(11)(14)t3S3tS11t(s)t1(s),,%t2(s),,%t3(s),,%1501319515,301016710,111115419,311S(m)S1(m),,%S2(m),,%S3(m),,%91816135717,4718110015,191896718,514832005©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.50km/s,,M6050kg16000kg,t2S2t3S3M2C1:t2M;C2:S2M;C3:t3M;C4:S3M2tSM1,,311%,514%;3010%1111%(),4718%1918%(),,,2,,,;,,,,,,,,+,3,,,,,,:[1]1[M].3.:,200014.[2]1[M].1.:,2001171[3]ThomasD.Gillespie.FundamentalsofVehicleDynamics.WarrendalePA:SAE.Inc,1992.[4]().[M].,1:,1992.[5]1()[M].1.:,1981111[6]1GB/T1253621990.[S]1:,1999,(10):2622266.:2005203208,3C(CNAL),(ILAC),28136,,:17.5m13.5m9.3m,5m,()(GB18655-2002GB14023-2000)3.98m8.03m3.0m,,GB4343.1-2003GB17743-1999::401122:023-863054128630541986305417:023-86305440:920053©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.