文献类型：期刊文献

英文题名：Transverse vibration of the boring bar for BTA deep hole machining under stochastic excitation

作者：Zhang, Quanbin[1];Zhao, Wu[1];Li, Yamin[2];Jing, Shuangxi[1]

第一作者：Zhang, Quanbin

通讯作者：Zhao, W[1]

机构：[1]Henan Polytech Univ, Sch Mech & Power Engn, Jiaozuo 454000, Peoples R China;[2]Xinxiang Univ, Coll Mech & Elect Engn, Xinxiang 453003, Peoples R China

第一机构：Henan Polytech Univ, Sch Mech & Power Engn, Jiaozuo 454000, Peoples R China

通讯机构：[1]corresponding author), Henan Polytech Univ, Sch Mech & Power Engn, Jiaozuo 454000, Peoples R China.

年份：2023

卷号：37

期号：11

起止页码：5635-5648

外文期刊名：JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20234615055509);Scopus(收录号：2-s2.0-85176280978);WOS:【SCI-EXPANDED(收录号:WOS:001098757900001)】；

基金：This work is supported by Research Program supported by the National Natural Science Foundation of China, grant number (51075126); Scientic and Technological Research Project of Henan Provincial Science and Technology Department, grant number (192102210052).

语种：英文

外文关键词：BTA deep hole boring bar; Stochastic excitation; Transverse vibration characteristic; Response variance; Spectral density

摘要：Taking the BTA deep hole boring bar as the object of axial flow and axial feed movement, the dynamic characteristics of the fluid-structure coupling boring bar are systematically studied. The influence of complex deformation (bending, torsion, tension, and compression) factors are considered in the derivation of dynamic characteristics. According to the force situation of the BTA deep hole boring bar, the transverse vibration equation of the BTA deep hole boring bar is established. The transverse vibration equation is discretized by Galerkin method, and then its characteristic root, response variance, and spectral density are solved to realize the transverse vibration analysis of the boring bar. Research has found that the correlation between system stability and boring bar speed is no longer monotonous. System stability is positively correlated with the equivalent stiffness and the equivalent shear modulus. There is a negative correlation between system stability and axial force, but it is not significant.