离合器波形弹簧载荷-变形特性仿真分析

The Simulation Analysis of Clutch Cushion Spring Load-Deflection Characteristics

波形弹簧作为干式离合器摩擦片中具有轴向弹性的部件,其轴向载荷-变形特性直接影响到离合器接合过程中传递转矩变化规律,掌握其载荷-形变特性对于精确制定AMT离合器控制策略,进而减小起步、换挡过程中的接合冲击意义重大。以波形弹簧片结构参数为研究对象,运用有限元软件ANSYS-workbench建立了波形弹簧接触动力学仿真模型,分析了波形弹簧片结构尺寸参数对其载荷-变形特性的影响。分析结果表明波形弹簧展角越大,压缩前期压力上升越快而最终压力并无太大变化;波形弹簧厚度越大,压力上升越快且最终压力越大。

The cushion spring as the axial elasticity parts in the dry-clutch disc, the load-deflection characteristics of the cushion spring have directly impact on the torque during the clutch engaging process. It＇s greatly significant to master the load-deflection characteristics to accurately formulate AMT clutch control strategies and then reduce the impact in the process of starting and shifting. It focuses on the structural parameters of thecushion spring, using finite element analysis software ANSYS-workbench to establish the cushion spring contact dynamics simulation modal and analyze the impact for the loaddeflection characteristics when changing the size of the cushion spring structure. The results show that, the greater the exhibition-angle of cushion spring is, the faster the pressure rises at the early stage of the compression, and the final pressure has no significant change. The pressure rises faster and the final pressure is greater when the thickness of the cushion spring increases.