结构拟动力实验数值积分方法的比较研究  

Comparative Study on the Numerical Integration Algorithms for Structural Pseudo-dynamic Test

作　　者：祝辉[1] 杨佑发[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045

出　　处：《实验科学与技术》2009年第3期40-43,共4页Experiment Science and Technology

基　　金：重庆市建委资助项目(2007-33)

摘　　要：在对结构拟动力实验显式数值积分方法的理论推导的基础上,通过数值计算分别对中央差分法、显式Newmark法、双β参数法的稳定性和计算精度进行了比较研究。计算结果表明:中央差分法和显式Newmark法稳定条件为Ω<2,双β参数法是无条件稳定的;当Ω<0.8,3种方法都具有良好的计算精度。Based on the theoretical derivation of the explicit numerical integration algorithms in the structural pseudo - dynamic test, we carry on studies on comparing the stability and the calculating accuracy of the center different algorithm, the explicit Newmark algo- rithm and the double fl parameters algorithm by the numerical calculating. As the results show, the center different algorithm and the explicit Newmark algorithm meet the condition of stability that Ω is less than 2, while the double β parameters algorithm is unconditional stable. When .Ω is less than 0. 8, these algorithms have the same good calculating precision.

关 键 词：拟动力实验 数值积分方法 稳定性 计算精度 

分 类 号：P315.9[天文地球—地震学] O241.84[天文地球—固体地球物理学]