Effect of Spatial Angular Misalignment on Dynamic Characteristics of an Idler Gear System
编号:117
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更新:2026-10-10 09:14:59 浏览:40次
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摘要
Spatial angular misalignment alters tooth contact and load distribution in gear systems. This study develops a slicing-based time-varying mesh stiffness model incorporating local geometry and misalignment-induced clearances and integrates it into a multi-degree-of-freedom dynamic model of an idler gear system. Five combinations of angular misalignment about two orthogonal axes are investigated to evaluate their effects on mesh stiffness, dynamic meshing force, idler gear acceleration, and overturning moments. The results show that increasing misalignment reduces the cycle-averaged mesh stiffness and increases the root-mean-square (rms) acceleration, while the mean meshing force remains nearly unchanged. The peak meshing force increases across Cases I–V, whereas the rms of the force fluctuations decreases slightly from Case I to Case II before increasing in Cases III–V. The mesh-frequency amplitude increases while the second-harmonic amplitude decreases. The second harmonic is slightly larger in Case I, whereas the mesh-frequency component is larger in Cases II–V. Both the mean magnitudes of the overturning moments and the rms of their fluctuations increase markedly, exhibiting greater relative changes than the evaluated force and acceleration measures. Under the investigated conditions, equal increases in angular misalignment about the x-axis produce larger response changes than those about the y-axis.
关键词
spatial angular misalignment,time-varying mesh stiffness,dynamic model,dynamic characteristics
稿件作者
Gaofan Han
Anhui University
Xianzeng Liu
Anhui University
Yongbin Liu
Anhui University
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