原文传递
Force-Based Frame Element Implementation for Real-Time Hybrid Simulation Using Explicit Direct Integration Algorithms
| 题名： | Force-Based Frame Element Implementation for Real-Time Hybrid Simulation Using Explicit Direct Integration Algorithms |
| 其他题名： | ACI(American Concrete Institute).(2011)."Building code requirements for structural concrete and commentary."ACI 318-11,Farmington Hills,MI. |
| 正文语种： | 英文 |
| 作者： | Chinmoy Kolay |
| 关键词： | Real-time hybrid simulation;Force-based frame element;Direct integration algorithm;Explicit;Unconditional stability; Numerical damping; Seismic effects |
| 摘要： | Existing state determination procedures for force-based finite elements use either an iterative scheme at the element level or a noniterative scheme at the element level that relies on an iterative solution algorithm for the global equilibrium equations. The former cannot ensure convergence in real-time computations, whereas the latter requires an implicit direct integration algorithm; therefore, these procedures are not applicable to real-time hybrid simulation (RTHS) utilizing an explicit direct integration algorithm. A new procedure is developed based on a fixed number of iterations and an unconditionally stable explicit model-based integration algorithm. If the maximum number of iterations is reached, element resisting forces are corrected to re-establish compatibility, and unbalanced section forces are carried over to and corrected in the next time step. This procedure is used in the numerical simulation and RTHS of an earthquake-excited two-story reinforced concrete building. Results show that an accurate solution can be obtained even without performing any iteration. The influence of the modelbased parameters of the integration algorithm on the stability and accuracy of the RTHS is also studied. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N02011 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001944 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 02 |
| 页码： | 116-128 |
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