机械科学与技术2017，Vol.36Issue(8)：1161-1166,6.DOI:10.13433/j.cnki.1003-8728.2017.0803
计入柔性梁动力刚化/软化效应的一种新方法
A New Method for Accounting for Dynamic Stiffening/Softening Effect of Flexible Beams in Dynamics Modeling
摘要
Abstract
The essence of the dynamic stiffening/softening effect of flexible beams is the influence of the axial internal force caused by the large overall motion on the transverse vibration of the beams.A new method for accounting for the effect is presented.The central idea of this method is that the dynamic stiffening/softening effect of flexible beams is accounted for in the dynamic model by taking into consideration the influence of the axial internal force on the transverse vibration of the beams.Compared with other methods for accounting for the dynamic stiffening/softening effect of flexible beams,this method is more intuitive,clearer in physical concept,and simpler in symbol operation.A flexible beam clamped to a rotating rigid hub is taken as an example to show how to use the method to account for the dynamic stiffening effect of the beam.The dynamic modeling and numerical simulation of the beam confirm the validity and simplicity of the method.关键词
柔性梁/动力刚化/软化效应/轴向内力/横向振动Key words
flexible beam/dynamic stiffening/softening effect/axial internal force/vibration分类
机械制造引用本文复制引用
张劲夫..计入柔性梁动力刚化/软化效应的一种新方法[J].机械科学与技术,2017,36(8):1161-1166,6.基金项目
国家自然科学基金项目(11172234)资助 （11172234）
