OpenSees 混合模拟试验技术发展与应用

将现代结构地震性能模拟与试验分为整体结构模拟试验和子结构模拟试验两类. 在此基础之上详细 讨论了混合模拟试验的基本概念背景及其应用与发展现状. 结合面相对象有限元程序OpenSees 的高层程序 架构和并行计算程序架构, 详细论述了基于OpenSees 的4 种混合模拟试验系统, 并简要介绍了多尺度一体化 混合建模的概念与应用. 证明基于商业或非商业有限元软件平台开展混合模拟试验是可行的; 混合模拟试验 所要处理的核心问题是如何将不同的有限元软件平台以及各个试验站点的设备联系起来, 并实现相互之间的 协同工作. 混合模拟试验在强震作用下结构连续倒塌问题的研究中具有一定的优势. 指出混合模拟试验这一 新技术的实质性发展离不开目前所强调的多学科之间的无缝融合. 

DEVELOPMENT AND APPLICATIONS OF HYBRID SIMULATION AND EXPERIMENTATION USING OPENSEES

In this paper, modern structural performance simulation or experimentation systems can be classified into global (i.e. structure) and local (substructure) categories. The background, some basic concepts, state-of-the-art development and applications of hybrid simulation (experimentation) are discussed in detail within this kind of classification. Based on the object-oriented finite element program Open System for Earthquake Engineering Simulation (OpenSees) and its high-level software architecture as well as parallel computing program structure, four OpenSees-based hybrid simulation and hybrid experimentation systems are addressed. Further, a brief introduction of the concepts and applications of multi-scale integrated hybrid modeling is given herein. It has been proved to be feasible for developing hybrid simulations or hybrid experimentations based on some commercially and non-commercially available finite element (FE) software platforms. The key issue confronted is how to incorporate different FE software platforms with the testing apparatus locating at different places and to make them work in a precisely synchronized mode. Hybrid simulation technology has some advantages over other conventional analytical methods, especially for the case of progress collapse simulation of structures subjected to severe earthquakes. However, as critically pointed out in this paper, substantial development of this novel technology cannot be achieved without seamless fusion of multi-disciplinary that should be stressed right now.