Stability and nonlinear dynamic behavior of drilling shaft system in copper stave deep hole drilling

被引：7
|
作者：
Kong Ling-fei [1 ]
Li Yan [1 ]
Lue Yan-jun [1 ]
Li De-xin [1 ]
Li Shu-juan [1 ]
Tang Ao-fei [1 ]
机构：
[1] Xian Univ Technol, Sch Mech & Instrumental Engn, Xian 710048, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2009年 / 16卷 / 03期
关键词：
copper stave; deep hole drilling; drilling shaft; nonlinearity; bifurcation;
D O I：
10.1007/s11771-009-0076-5
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The stability and nonlinear dynamic behavior of drilling shaft system in copper stave deep hole drilling were analyzed. The effects of the fluctuation of the cutting force, the mass eccentricity and the hydrodynamic forces of cutting fluid could be taken into consideration in the model of drilling shaft system. Based on the isoparametric finite element method, the variational form of Reynolds equation in hydrodynamic fluid was used to calculate nonlinear hydrodynamic forces and their Jacobian matrices simultaneously. In the stability analysis, a new shooting method for rapidly determining the periodic orbit of the nonlinear drilling shaft system and its period was presented by rebuilding the traditional shooting method and changing the time scale. Through the combination of theories with experiment, the correctness and effectiveness of the above methods are verified by using the Floquet theory. The results show that the mass eccentricity can inhibit the whirling motion of drilling shaft to some extent.
引用
收藏
页码：451 / 457
页数：7
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