噪声与振动控制2018，Vol.38Issue(1)：52-57,6.DOI:10.3969/j.issn.1006-1355.2018.01.010
螺栓连接对高压转子结合面弯曲刚度的影响
The Influence of Bolt Joint Characteristics on Bending Stiffness of Rotor Joint Surface
摘要
Abstract
The influence of bolt joint characteristics,such as the number and pretightening force of the bolts,on the bending stiffness of high pressure rotor joint structures of aero-engines is studied.Firstly,the refined finite element model of bolt joints is established,and the bending stiffness of the joint interface is simulated by ANSYS software with different bolt numbers and different pretightening force considered.Then,the curve fitting is done for the simulation results in MATLAB. The results show that the relationship between bending stiffness and deformation can be expressed in a double exponential form in which the coefficients of the equation can be determined by the number of the bolts and the pretightening force. Meanwhile,the concept of equivalent stiffness coefficient of the joint interface is put forward in order to simulate the bolt assembly technique of the high pressure rotors. Finally, the simulation results are verified by the experiment, and the deformation vs.stiffness curve obtained in the experiment is found to be consistent with the simulation result.The double exponential relation between the bending stiffness and the deformation and the concept of equivalent stiffness coefficient proposed in this study are beneficial to aero-engine design and the evaluation of the stiffness characteristics of the bolt joint surfaces.关键词
振动与波/螺栓预紧力/形变量/结合面弯曲刚度/有限元分析/等效刚度系数Key words
vibration and wave/bolt pretightening force/deformation/bending stiffness/finite element analysis/equivalent stiffness coefficient分类
机械制造引用本文复制引用
郭文新,么宇辉,李韵,李富才,李鸿光..螺栓连接对高压转子结合面弯曲刚度的影响[J].噪声与振动控制,2018,38(1):52-57,6.基金项目
上海市科学技术委员会基础研究资助项目(15JC1402600) （15JC1402600）
