摘要
研究了一种适合实时或快速拟动力试验的数值积分方法——动量方程方法,阐述了动量方程方法的原理,结合显式γ函数法求解隐式方程,得到了拟动力试验实用的显式位移表达式。选用合适的参数,对一根悬臂钢柱进行了拟动力试验。试验结果与中心差分法得到的试验结果吻合较好,从而验证了积分方法的可行性和有效性,可以作为速度相关型结构或构件拟动力试验的数值积分方法。
A kind of numerical integration method, namely momentum equation method, is investigated suitable for real-time or fast pseudo-dynamic testing. The principle of the momentum equation method is represented. The practical and explicit displacement expression for the pseudo-dynamic testing is obtained by solving implicit equation combining momentum equation with explicit γ function. The pseudo-dynamic testing about a cantilever beam is carried out by applying appropriate parameters. The testing result is preferably identical with that of central difference method （CMD）, which demonstrates that the integration method is feasible and valid, and can be applied to the pseudo-dynamic testing of velocity-dependent structures or specimens.
出处
《世界地震工程》
CSCD
北大核心
2011年第1期9-13,共5页
World Earthquake Engineering
基金
国家自然科学基金重点项目(90715036)
教育部博士点基金项目(20092302110049)
江苏省结构工程重点实验室开放课题基金项目(ZD1004)
江苏高校优势学科建设工程项目
关键词
动量方程
γ函数法
显式表达式
数值积分方法
拟动力试验
momentum equation
γ-function
explicit expression
numerical integration method
pseudo-dynamic testing
