摘要
结构的固有振型、频率和阻尼是重要的动力特征,是车振、风振及地震分析等动力计算的基础。以丫髻沙大桥为例,通过建立其三维空间有限元模型,采用子空间迭代法,得到其前十阶的自振模态,并从中分析其出现的主要振型,为本桥的其他分析做准备。
The natural vibration frequency and type,the dynamic characteristics of damping are important,Car,wind power calculation and analysis of the earthquake are presented.Based on Yaji sand,for example,by establishing the three-dimensional space finite element model,using subspace iteration,the top 10 of vibration modal is analysed,and the main mode of the bridge,the other is to prepare analysis.
出处
《科学技术与工程》
2010年第30期7603-7606,共4页
Science Technology and Engineering
关键词
频率
有限元
振型
frequency finite element mode of vibration
