结构动力方程另类显式逐步积分格式研究

现有显式积分格式的稳定性与计算结果的取信度均远逊于常用的隐式积分格式,这是制约现有显式积分格式在大型结构动力分析软件以及其它相关软件中广泛应用的瓶颈.以解决这一瓶颈问题为研究目标,通过结合采用精确法和平均常加速度法的基本假定,推导建立了基于双重基本假定的另类显式积分格式,提出了相关的体系另类振动周期等新概念.基于另类振...

Researches on Other Explicit Integration Method of Structural Dynamic Equations

Both stability and reliability of calculation resuhs of current explicit integration method are inferior to common implicit integration method, which restrict the explicit integration method widely used in large structure dynamic analysis software and other associated software. With solving this bottleneck problem as the main research objective ,by combining the basic assumption of accurate method with that of constant average acceleration method, a other explicit integration method based on double basic assumption is derived,and some new concept of other vibration period of system are put forward. Based on the other vibration period and combined with current associated research results, criteria of accuracy and criteria of stability in form of the method are derived, which provide the necessary precondition and foundation for developing associated numerical simulation research. Also the technical route of associated numerical simulation research paper has been summarized and the advance notices and preliminary discussions on obtained mainly numerical simulation research results have been given.