This work presents a comprehensive formulation of the equations governing the lubrication and the lock-up phases of an engaging wet clutch. A finite element model is established through the coupling of the Reynolds equation of the fluid film model with the dynamic force and torque equilibrium equations of the two-disc system. To solve the problem, an efficient hybrid simulation technique is introduced, capable of capturing the rapidly evolving transient phenomena at the start of the engagement phase, which later settles into a quasi-static one as the film thickness asymptotically decreases. The simulation tool is benchmarked against previously published results and is later used to investigate the effect of a newly introduced groove configuration utilising variable-width grooves. The proposed geometry is compared against the well-known radial groove configuration on the engagement characteristics, resulting into decreased hydrodynamic peak force by approximately 20%. The supremacy of the proposed groove design over the standard radial geometry is further verified through a newly introduced groove design criterion that takes into consideration the relative effect of squeeze and torsional Couette flows during the hydrodynamic phase of the engagement. Finally, a comprehensive parametric study is conducted to capture the effect of the groove width and depth on the engagement variables.

这项工作提出了控制接合湿式离合器的润滑和锁定阶段的方程式的综合公式。通过流体膜模型的雷诺方程与双盘系统的动态力和扭矩平衡方程的耦合建立了有限元模型。为解决该问题，引入了一种高效的混合仿真技术，能够捕捉接合阶段开始时快速演变的瞬态现象，随后随着薄膜厚度逐渐减小而进入准静态现象。该仿真工具以先前发布的结果为基准，随后用于研究新引入的使用可变宽度凹槽的凹槽配置的效果。将建议的几何形状与众所周知的径向凹槽配置在接合特性上进行比较，导致流体动力峰值力降低约 20%。通过新引入的凹槽设计标准进一步验证了所提出的凹槽设计优于标准径向几何形状的优势，该标准考虑了接合的流体动力阶段期间挤压和扭转库埃特流的相对影响。最后，进行全面的参数研究以捕捉凹槽宽度和深度对接合变量的影响。通过新引入的凹槽设计标准进一步验证了所提出的凹槽设计优于标准径向几何形状的优势，该标准考虑了接合的流体动力阶段期间挤压和扭转库埃特流的相对影响。最后，进行全面的参数研究以捕捉凹槽宽度和深度对接合变量的影响。通过新引入的凹槽设计标准进一步验证了所提出的凹槽设计优于标准径向几何形状的优势，该标准考虑了接合的流体动力阶段期间挤压和扭转库埃特流的相对影响。最后，进行全面的参数研究以捕捉凹槽宽度和深度对接合变量的影响。