考虑制造误差和油膜作用力的齿轮敲击动力学分析

doi:10.19562/j.chinasae.qcgc.2024.04.018

Abstract

Abstract:

In order to accurately evaluate the rattle performance of the gearbox unloaded gear under angular acceleration excitation， a ten-degree-of-freedom torsional dynamic model for the dual-clutch transmission rattle bench test is established using the lumped parameter method. Based on consideration of the contact time varying mesh stiffness， backlash nonlinearities and drag torque， the gear manufacturing error and the oil film induced-force are further considered. Bench test results show that the oil film induced-force model containing oil film entraining and squeeze effects can correctly simulate the transmission rattle response. Numerical analysis results show that lubricant film can reduce the mesh impact induced by the error-induced displacement excitation and time-varying mesh stiffness parametric excitation. The gear rattle intensity increases with the increase of manufacturing error amplitude， and when the error amplitude increases to a certain value， the gear pair produces rattle phenomenon with null angular acceleration as well. The influence of oil temperature on gear rattle is related to the angular acceleration excitation. When there is no angular acceleration excitation， the low-frequency circumferential error with low-amplitude at low-temperature changes the direction of the oil film force and hence produce gear rattle. The rattle response frequency caused by oil film hydrodynamic force is lower than that generated by the structural tooth contact. The rattle intensity increases as the temperature increases in a convex function once the angular acceleration excitation is applied at transmission input shaft.

Key words: unloaded gear, gear rattle, manufacturing error, oil film induced-force

Xiaohui Shi,Yi Zhou,Huihui Xu,Dong Guo,Ziyuan Mei,Xuefang Cui. Gear Rattle Dynamic Analysis Considering Manufacturing Error and Oil Film Force[J].Automotive Engineering, 2024, 46(4): 725-734.

Figures/Tables 17

参数

数值

J i

（

i = 1,2, 3, . . ., 10

） / （10^-3kg·m²）

95.9， 15， 1.8， 1.34， 44.8，

0.56， 2.97， 1.8， 2.5， 7 920

k s i

（

i = 1,2, 3

） / （N·m·rad^-1）

39 781， 299 995， 15 756

轴扭转/齿轮接触阻尼比

ξ s

，

ξ m

0.05， 0.1

误差类型		傅里叶展开级数
误差类型		第1级	第2级	第3级
$e ? r$	幅值/μm	2.5	0.5	0.2
$e ? r$	相位/ $2 π r a d$	0	0.417	0.695
$e ? m$	幅值/μm	0.2	0.1	0.05
$e ? m$	相位/ $2 π r a d$	0	0.417	0.695

参数	数值
油温 $T o i l$ / ℃	20， 40， 60， 80
密度 $ρ$ /（kg·m^-3）	843， 830， 817， 805
动力黏度 $μ$ /（10^-3Pa·s^-1）	45.5， 18.9， 9.8， 5.7
拖曳力矩 $M d$ /（N·m）	R挡：0.093， 0.089， 0.088， 0.084 2挡：-0.051， -0.027， -0.017， -0.012 6挡：0.063， 0.034， 0.022， 0.015 FD1：0.078， 0.067， 0.061， 0.048

References 22

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参数	齿数	模数/mm	压力角/（°）	螺旋角/（°）	齿宽/mm
R挡	27/37	3.15	17.5	20	9.45
2挡	17/48	2.3	20	22.5	17.5
4挡	35/39	2.25	17.5	29	14.56
6挡	35/27	2.25	29	29	14.56
FD1	17/71	2.85	20	24	30.3
FD2	15/71	2.85	20	24	30.3

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Gear Rattle Dynamic Analysis Considering Manufacturing Error and Oil Film Force

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