汽车各工况下轮毂轴承寿命计算公式EXCEL表

RH,轮胎半径,338,,ε1=a/L,0.507594937,ε2=RH/L,4.278481013,,

K,载荷,5.39,,,,,,,

a,图,40.1,,,,,,,

L,图,79,,,,,,,

f,摩擦系数,0.05,,,,,,,

轴承1参数,,,,,,,,,

d,轴承内径,40,e1,轴承1判断系数,0.37,Fa/Fr<=e1,,Fa/Fr>e1,

D,轴承外径,80,Cr(KN),基本而定动载荷,66,X,Y,X,Y

T,轴承公称宽度,19.75,Cor(KN),基本额定静载荷,73.9,1,0,0.4,1.6

C,内圈公称宽度,16,Y1,轴承1计算系数,1.6,,,,

B,外圈公称宽度,18,ξ1,寿命系数,3.33333,,,,

轴承2参数,,,,,,,,,

d,轴承内径,34.925,e2,轴承2判断系数,0.38,Fa/Fr<=e1,,Fa/Fr>e1,

D,轴承外径,65.088,Cr(KN),基本而定动载荷,48.2,X,Y,X,Y

T,轴承公称宽度,18.034,Cor(KN),基本额定静载荷,58.8,1,0,0.4,1.59

C,内圈公称宽度,13.97,Y2,轴承1计算系数,1.59,,,,

B,外圈公称宽度,18.288,ξ2,寿命系数,3.33333,,,,

工况1，车辆直线行走时，轴承只受径向载荷,,,,,,,,,

FrI1,轴承1径向载荷,3.888987342,FaI1,轴承1轴向载荷,1.215308544,FaI1/FrI1,0.3125,,

FrII1,轴承2径向载荷,3.807113924,FaII1,轴承2轴向载荷,1.215308544,FaII1/FrII1,0.31922043,,

PI1,轴承1当量动载荷,3.888987342,,,,,,,

PII1,轴承2当量动载荷,3.807113924,,,,,,,

工况2，车辆转弯时，汽车会在重心在中心点受到一个离心力Kd。（如图）,,,,,,,,,

,,,前轮受力图,,,,,,

,,,,,,,,,,

Kd/G,离心力/最大重力,0.25,,,,,,,

h,重心高度,700,h/b,重心高度/轮距,0.461741425,,,,

b,轮距,1516,,,,,,,

Ke,外侧轮Z向力,6.63439314,Kae,外轮摩擦力,1.658598285,,,,

Ki,内侧轮Z向力,4.14560686,Kai,内轮摩擦力,1.036401715,,,,

xKd,前轮Y向受力,2.695,,,,,,,

外侧轮毂轴承受力,,,,,,,,,

FrI2,轴承1径向载荷,10.46386564,FdI2,轴承1派生轴向力力,3.269958011,,,,

FrII2,轴承2径向载荷,-3.829472496,FdII2,轴承2派生轴向力力,-1.204236634,,,,

Ka,轴向力,1.658598285,,,,,,,

FaI2,轴承1轴向载荷,3.269958011,FaI1/FrI1,0.3125,,,,,

FaII2,轴承2轴向载荷,1.611359726,FaII1/FrII1,-0.420778509,,,,,

PI2,轴承1当量动载荷,10.46386564,,,,,,,

PII2,轴承2当量动载荷,1.030272966,,,,,,,

内侧轮毂轴承受力,,,,,,,,,

FrI3,轴承1径向载荷,-2.329936007,FdI3,轴承1派生轴向力力,-0.728105002,,,,

FrII3,轴承2径向载荷,6.475542868,FdII3,轴承2派生轴向力力,2.036334235,,,,

Ka,轴向力,1.036401715,,,,,,,

FaI3,轴承1轴向载荷,0.99993252,FaI3/FrI3,-0.429167375,,,,,

FaII3,轴承2轴向载荷,2.036334235,FaII1/FrII1,0.314465409,,,,,

PI3,轴承1当量动载荷,0.667917629,,,,,,,

PII3,轴承2当量动载荷,6.475542868,,,,,,,

总的当量载荷,,,,,,,,,

PI,轴承1总的当量动载荷,4.794847351,,,,,,,

PII,轴承2总的当量动载荷,3.9852