中文摘要：

基于Timoshenko梁理论、传递矩阵法和动柔度耦合子结构分析技术（RCSA）,提出了一种刀尖频响函数预测方法。由于避免了多段Timoshenko梁的模态分析和模态叠加带来的累积误差,该方法较模态叠加法具有更高的计算精度和效率。重点分析了主轴-刀柄和刀柄-刀具结合面参数以及单个轴承动力学对刀尖频响函数的影响。研究结果表明：轴承动力学主要控制主轴-刀柄-刀具系统的刚体模态,主轴-刀柄结合面参数主要影响系统的第一阶弹性模态,刀柄-刀具结合面参数主要影响系统的第二阶弹性模态。研究结果为结合面参数辨识研究提供了理论基础和技术手段。

英文摘要：

Based on Timoshenko beam theory,transfer matrix method and Receptance Coupling Substructure Analysis（ RCSA）,a prediction method of tool point frequency response function（ FRF） was proposed. Compared with mode superposition method,the method could achieve a more accurate result of calculation and higher efficiency by avoiding the modal analysis of multisection Timoshenko beams and modal superposition truncation errors. Otherwise,it was aimed to analyze the effects of spindle-holder and holder-tool of interface parameter,as well as the effects of individual bearing dynamics on the toolpoint FRF. The research results show that bearing dynamics control mainly the rigid body modes of the assembly of spindle- holder-tool,whereas,spindle-holder interface parameter mainly affects the first step elastic mode,while holder-tool interface parameter affects the second step elastic mode,which provide theoretical basis and technical methods for the recognition research of interfaces parameters.