首页|Contact stiffness and damping of spiral bevel gears under transient mixed lubrication conditions

Contact stiffness and damping of spiral bevel gears under transient mixed lubrication conditions

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Existing studies primarily focus on stiffness and damping under full-film lubrication or dry contact conditions.However,most lubricated transmission components operate in the mixed lubrication region,indicating that both the asperity contact and film lubrication exist on the rubbing surfaces.Herein,a novel method is proposed to evaluate the time-varying contact stiffness and damping of spiral bevel gears under transient mixed lubrication conditions.This method is sufficiently robust for addressing any mixed lubrication state regardless of the severity of the asperity contact.Based on this method,the transient mixed contact stiffness and damping of spiral bevel gears are investigated systematically.The results show a significant difference between the transient mixed contact stiffness and damping and the results from Hertz(dry)contact.In addition,the roughness significantly changes the contact stiffness and damping,indicating the importance of film lubrication and asperity contact.The transient mixed contact stiffness and damping change significantly along the meshing path from an engaging-in to an engaging-out point,and both of them are affected by the applied torque and rotational speed.In addition,the middle contact path is recommended because of its comprehensive high stiffness and damping,which maintained the stability of spiral bevel gear transmission.

mixed contact stiffness and dampingtransient mixed lubricationreal machined roughnessdifferent contact trajectoriesspiral bevel gears

Zongzheng WANG、Wei PU、Xin PEI、Wei CAO

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School of Aeronautics and Astronautics,Sichuan University,Chengdu 610065,China

School of Construction Machinery,Chang'an University,Xi'an 710064,China

国家自然科学基金Chongqing Key Industry General Key Technology Innovation Special Major Research and Development ProjectsFundamental Research Funds for the Central Universities

NSFC 51875369cstc2017zdcy-zdzxX0001YJ201752

2022

摩擦(英文)

摩擦(英文)

CSTPCDCSCDSCIEI
ISSN：2223-7690
年,卷(期)：2022.10(4)
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