摘要
在鸟巢型索穹顶结构静力计算的基础上,利用子空间迭代法,计算出结构的频率和相应振型,并结合跳格与非跳格两种鸟巢型索穹顶算例,对其振型与频率进行了分析比较.计算结果表明鸟巢型索穹顶结构具有良好的整体刚度,本文结果为该类结构的进一步动力性能分析提供了基础.
Based on the static calculations of the bird-nest-patterned cable dome, this article successfully figures out the frequency and the relevant mode shape on the advantage of subspace iteration method. Combined with the above results and two calculation patterns featured in patterns of both grid-jumping and none-grid-jumping, it tries to conduct a comparision and analysis in their mode shapes and frequencies. The results of the calculations clearly show that the bird-nest-patterned cable dome contains excellent integral stiffness, which provides a strong basis for the further dynamical analysis of this type of cable domes.
出处
《空间结构》
CSCD
北大核心
2007年第3期35-37,共3页
Spatial Structures
基金
国家自然科学基金资助项目(50278086)
关键词
鸟巢型
索穹顶
自振频率
振型
bird-nest-pattern
cable dome
natural frequency
vibration mode