摘要
本文将考虑空间效应非对称刚度的单层结构简化为三个自由度体系,用多尺度法研究了体系在强激励下的超谐共振与亚谐共振时的动力行为,通过算例分析得到一些不同于线性结构的结论,为结构非线性抗震分析提供了途径。
In this paper, the structure with nonsymmetrical stiffness is simplified to a three-degrees-of-freedow system for considering spatial effect. The perturbation analysis is used to study the conditions that give rise to superharmonic resonance and subharmonic resonance. Then the nonlinear dynamical behavior is analyzed when the superharmonic resonance or the subharmonic resonance occurs. Some conclusions different from linear structures have been drawn through the analyses of numerical example.
出处
《地震工程与工程振动》
CSCD
北大核心
2003年第6期50-56,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然基金资助项目(50278063).
关键词
非对称效应
非线性结构
超谐共振
亚谐共振
空间效应
nonlinearity
superharmonic resonance
subharmonic resonance
nonsymmetry
spatial effect
