Analytical and Numerical Modeling of Engagement of Rough, Permeable, Grooved Wet Clutches
Analytical and Numerical Modeling of Engagement of Rough, Permeable, Grooved Wet Clutches
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DOI：
10.1115/1.2832450
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发表时间：
1997
影响因子：
2.5
通讯作者：
E. Berger;F. Sadeghi;C. Krousgrill
中科院分区：
文献类型：
--
作者：
E. Berger;F. Sadeghi;C. Krousgrill
一个简单的数学模型的接合粗糙，渗透，沟槽湿离合器已经开发和用于确定各种输入参数（施加载荷，沟槽面积和摩擦材料的渗透率）对接合的影响。根据Patir和Cheng（1978）的说法，该模型包括表面粗糙度的影响，根据Natsumeda和Miyoshi（1994）和Beavars和Joseph（1967）的说法，摩擦材料的渗透率，以及根据一种新的近似，摩擦材料中的沟槽。该方法将雷诺和力平衡方程系统简化为膜厚度和时间的单一一阶微分方程。利用新模型的函数评估的低计算成本，使用线搜索算法来寻找产生相同交战特性的输入参数组合集。这组设计点在参数空间中呈现为啮合等值面（F app， Φ， A red）。等值面隐式地给出了有关啮合时间的信息，并显示了无法实现所需啮合特征的区域。输入参数分为影响接合的瞬态部分的参数和影响稳态部分的参数。
A simple mathematical model for the engagement of rough, permeable, grooved wet clutches has been developed and used to determine the effect of various input parameters (applied load, grooved area, and friction material permeability) on engagement. The model includes the effects of surface roughness according to Patir and Cheng (1978), friction material permeability according to Natsumeda and Miyoshi (1994) and Beavars and Joseph (1967), and grooving in the friction material according to a new approximation. The approach reduces the system ofReynolds and force balance equations to a single, first-order differential equation in film thickness and time. A line searching algorithm, exploiting the low computational cost of function evaluations for the new model, is used to find the set of input parameter combinations yielding the same engagement characteristics. This set of design points is presented as an engagement isosurface in the parameter space (F app , Φ, A red ). The isosurface implicitly gives information about engagement time, and it shows regions in which the desired engagement characteristics cannot be achieved. The input parameters are classified as those affecting the transient portion of engagement and those affecting the steady-state portion.