单向C/SiC复合材料平面磨削的磨削力模型研究

为探究编织陶瓷基复合材料磨削力模型，探明材料去除机理，设计并制备了一种单向C/SiC复合材料。采用特殊的平面磨削实验，沿纤维典型方向进行磨削，同时结合多指数拟合方法确立了磨削力模型。研究结果表明：磨削参数对磨削力的影响较为显著，其中磨削力随着砂轮转速的增大而减小,随着磨削深度和进给速度的增大而增大。沿3种典型方向磨削时,磨削力从大到小依次为：法向、纵向、横向。利用模型优度分析，验证了模型预测单向C/SiC复合材料磨削力的可靠性。

Research on Grinding Force Model of Plane Grinding for Unidirectional C/SiC Composites

In order to explore the grinding force model of woven ceramic matrix composites and find out the material removal mechanism, a unidirectional C/SiC composite was designed and fabricated. The special surface grinding experiments were used to grind along the typical direction of the fibers, and a multi-exponential fitting method was proposed to establish the grinding force model. The research results show that the grinding parameters have a significant influence on the grinding forces, and the grinding forces decrease with the increasing of the grinding wheel speeds, and increase with the increasing of the grinding depths and the feed rates. When grinding in three typical directions, the grinding forces from large to small in order are as: normal, longitudinal, transverse. The model goodness analysis was used to verify the reliability of the model for predicting the grinding forces of unidirectional C/SiC composites.