摘要
本文采用一次近似模型研究了任意附加质量位置的中心刚体-柔性梁系统的频率特性。首先给出了一次近似模型的表达式,然后通过数值仿真研究了附加质量在梁上不同位置以及不同附加质量大小对系统频率的影响。结果表明,当附加质量在梁的前半段时,频率并不随其远离固定端而下降;但在靠近梁的后半端,频率则呈现出明显的下降趋势。
Frequency characteristics of a flexible hub-beam system with an attached mass were studied by using a first-order approximation coupling model. Firstly, the expression of the model for flexible hubbeam system was presented. Then frequency characteristics of the system with different position and different weight of attached mass were studied through numerical simulations. Numerical results indicate that along with the lapsing of attached mass from the fixed end of beam, the vibration frequency of beam does not show a degressive phenomenon in front half part of the beam and it shows an obvious degressive trend in back half part of beam,
出处
《力学季刊》
CSCD
北大核心
2005年第4期623-628,共6页
Chinese Quarterly of Mechanics
基金
国家自然科学基金(10472065)
上海市曙光计划(04SG16)
上海市自然科学基金(03ZR14062)
