摘要
由于高阶单步法具有无条件稳定、优良的算法阻尼特性、无超越现象、截断误差为Δt5的特性,已成功地应用于结构地震非线性反应分析、主动半主动及智能振动控制、刚度解析表示的动力反应等分析。该文根据结构拟动力试验的特点,考虑到试验中系统所能达到的精度条件,引入等效剪切刚度的思想,提出了高阶单步拟动力试验算法。单自由度和两自由度数值模拟算例分析以及3层足尺拟动力试验结果,证实了算法的可行性和优越性。
Due to the characteristics of unconditionally stable, good algorithm damping properties, no transcendental phenomenon, and At5 of truncation error, the high order single-step method had been successfully applied in nonlinear seismic response analysis and vibration controls. Based on the characteristics of the pseudo-dynamic testing and taking into account the permissible system accuracy, this paper introduces the concept of equivalent shear stiffness, and proposes the high order single-step algorithm of pseudo-dynamic testing The feasibility and advantages of this algorithm are demonstrated by a comparison between numerical simulation results of the SDOF and 2 DOF structure with those of the three-level full-scale testing.
出处
《工程力学》
EI
CSCD
北大核心
2008年第11期14-19,26,共7页
Engineering Mechanics
基金
国家自然科学基金项目(50508012)
关键词
高阶单步法
拟动力试验算法
等效剪切
足尺模型
刚度修正
high order single step method
pseudo-dynamic testing method
equivalent shear
full-scale model
stiffness correction
