Nonlinear dynamic characteristics of ball screw feed system under thermal deformation

被引：0
作者：
Jiancheng Yang
Changyou Li
Mengtao Xu
Tianzhi Yang
Yimin Zhang
机构：
[1] Northeastern University,School of Mechanical Engineering and Automation
[2] Shenyang University of Chemical Technology,School of Energy and Power Engineering
来源：
Nonlinear Dynamics | 2022年 / 107卷
关键词：
Nonlinear dynamics; Dynamic characteristics; Ball screw feed system; Thermal deformation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, a novel kinetic model is established to investigate the dynamic characteristic of the ball screw feed system by considering the thermal deformation of bearing joints, screw-nut joints and screw shaft. Based on the Hertz contact theory, the relationship between elastic restoring force and axial deformation of bearing joints and screw-nut joints is obtained, respectively. Then the dynamic characteristics of the kinetic equation are analyzed by Runge–Kutta method. The vibration characteristics of the feed system with and without thermal deformation are analyzed, and the results indicate that the amplitude becomes larger when thermal deformation is considered. The motion state of the feed system at different frequencies is analyzed, and the results show that with the change of frequency, the motion state of the system will appear period-doubling motion, quasi-periodic motion and chaotic motion. Finally, the influence of different parameters on the vibration characteristics of the system is discussed.
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页码：1965 / 1987
页数：22
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