摘要
对失谐肋环形平面结构的振动模态局部化问题进行了研究。将径向杆模拟为一端固定一端简支的超静定梁,环向连接杆模拟为无质量的线弹簧,采用Hamilton变分原理和Galerkin方法,导出了系统的运动方程表达式。分别计算出了谐调和失谐情况下的模态振型,并对计算结果进行分析讨论。
The localization of vibration mode in mistuned rib-circle plane structures is prespented. The radius bar is modeled as hyperstatic beam which is an end fixed and an end simply supported. The circumferential bar is modeled as non-weight spring. By using the Hamilton principle and the Galerkin＇s method, the equations of motion of the plane structures are derived. The mode shapes of the tuned and the mistuned are calculated and the results are analysed.
出处
《科学技术与工程》
2006年第8期926-930,共5页
Science Technology and Engineering
关键词
平面结构
失谐
振动
局部化
plane structures mistuned vibration localization
