Improved Large Spring/Stiffness Technique for Dynamic Response Analysis of Structures Subjected to Base Excitations

被引:2
|
作者
Zhou Guoliang [1 ]
Li Xiaojun [2 ]
Peng Xiaobo [2 ]
机构
[1] China Earthquake Adm, Inst Engn Mech, Harbin 150080, Peoples R China
[2] Inst Geophys, China Earthquake Adm, Beijing 100081, Peoples R China
来源
ADVANCED MATERIALS AND COMPUTER SCIENCE, PTS 1-3 | 2011年 / 474-476卷
基金
中国国家自然科学基金;
关键词
Uniform/nonuniform seismic excitation; Large Spring/Stiffness Method; Rayleigh damping; Structral dynamics; Error analysis; Improvements;
D O I
10.4028/www.scientific.net/KEM.474-476.1974
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
Based on the large spring/stiffness method (LSM), this paper develops an improved technique (I-LSM) applicable to structural dynamic analysis with the assumption of Rayleigh damping. To estimate the accuracy of the technique, the dynamic response is analyzed for a 2-DOFs model respectively subjected to uniform/nonuniform seismic excitations. It indicates that the traditional LSM is inapplicable when Rayleigh damping is adopted. And the errors increase monotonously with the aggrandizement of damping. It's also validated that the I-LSM based on the modification of displacement considering the influences of Rayleigh damping presented in this paper is able to effectively yield results almost identical to those of theoretical methods with errors beneath 4%.
引用
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页码:1974 / +
页数:2
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