...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Implementation of online model updating in hybrid simulation
【24h】

Implementation of online model updating in hybrid simulation

机译：混合仿真中在线模型更新的实现

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hybrid simulation combines numerical and experimental methods for cost-effective, large-scale testing of structures under simulated earthquake loading. Structural system level response can be obtained by expressing the equation of motion for the combined experimental and numerical substructures, and solved using time-stepping integration similar to pure numerical simulations. It is often assumed that a reliable model exists for the numerical substructures while the experimental substructures correspond to parts of the structure that are difficult to model. A wealth of data becomes available during the simulation from the measured experiment response that can be used to improve upon the numerical models, particularly if a component with similar structural configuration and material properties is being tested and subjected to a comparable load pattern. To take advantage of experimental measurements, a new hybrid test framework is proposed with an updating scheme to update the initial modeling parameters of the numerical model based on the instantaneously-measured response of the experimental substructures as the test progresses. Numerical simulations are first conducted to evaluate key algorithms for the selection and calibration of modeling parameters that can be updated. The framework is then expanded to conduct actual hybrid simulations of a structural frame model including a physical substructure in the laboratory and a numerical substructure that is updated during the tests. The effectiveness of the proposed framework is demonstrated for a simple frame structure but is extendable to more complex structural behavior and models.
机译：混合模拟结合了数值和实验方法，可在模拟地震荷载下进行经济有效的大规模结构测试。可以通过表达组合的实验和数值子结构的运动方程来获得结构系统级响应，并使用类似于纯数值模拟的时间步长积分来求解。通常假设存在一个可靠的数字子结构模型，而实验子结构对应于结构中难以建模的部分。在仿真过程中，从测量到的实验响应中可以获得大量数据，这些数据可用于改进数值模型，尤其是在对具有相似结构配置和材料特性的组件进行测试并承受可比较的载荷模式时尤其如此。为了利用实验测量的优势，提出了一种新的混合测试框架，该框架具有一种更新方案，可以根据随着测试的进行而对实验子结构进行即时测量的响应来更新数值模型的初始建模参数。首先进行数值模拟以评估关键算法，以选择和校准可更新的建模参数。然后扩展框架以进行结构框架模型的实际混合仿真，包括实验室中的物理子结构和在测试过程中更新的数字子结构。对于简单的框架结构，可以证明所提出框架的有效性，但可以扩展到更复杂的结构行为和模型。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号