EAGER/Collaborative Research: Aeroelastic Real-Time Hybrid Simulation for Wind Engineering Experimentation

这项探索性研究早期概念补助金(AGER)将探索用于地震工程实验的实时混合模拟(RTHS)的可行性，以及用于其他自然灾害(如极端风荷载)的实验。RTHS是一种用于结构工程分析的计算机物理系统方法，其中将实验和数值组件连接在一起，以提供结构的系统级响应，而结构的整体测试具有挑战性。这种方法允许通过实验捕获难以计算建模的复杂结构行为和载荷条件，同时对结构的其余部分进行模拟，以提高测试的准确性和效率。为了将RTHS扩展到包括气动弹性测试，将通过在佛罗里达大学(UF)NSF支持的自然灾害工程研究基础设施(NHERI)实验设施(EF)的边界层风洞(BLWT)进行测试来探索气动RTHS(AirRTHS)。AeroRTHS框架将通过全面捕获研究风灾的气动弹性响应所需的结构中复杂的流体-结构相互作用，促进下一代缓解策略的快速创建、调查和验证。航空实时防灾系统框架的成功实现将有助于以非破坏性和成本效益的方式调查更多适用于更现实情况的减轻风暴灾害的方法，从而有助于提高国家基础设施的可靠性和复原力。将在UF NHERI EF组织和主办一个网络物理系统研讨会，与利用EF的其他网络物理项目一起，促进空气RTHS在风力和地震研究社区中的使用。一份总结研讨会的报告将存档在NHERI数据仓库(https://www.designsafe-ci.org/).该项目将通过参与UF NHERI EF的研究和空中RTHS实验，为康涅狄格大学和克拉克森大学的研究生和本科生提供高级培训。该项目的目标有三个：(I)探索将空气动力学测试包括在内的RTHS的可行性；(Ii)通过在UF NHERI EF的BLWT实施，加速采用空气RTHS先进测试技术；以及(Iii)培训广泛的研究人员，以便在未来的研究工作中利用空气RTHS。这项研究将解决许多技术挑战，使RTHS能够有益于气动/气动弹性实验。这些挑战包括：执行器补偿；稳定性分析；以及计算子结构的大小、风洞模型时间尺度的增加以及传感器测量的类型和数量带来的限制。实现这三个目标将有助于加速在多种危险应用中采用RTHS，从而扩大这些先进测试方法在自然灾害研究界的影响。进行航空RTHS测试所需的设备、软件和方法的具体指南将在网络物理系统研讨会上制定和分发，并通过保存在NHERI数据仓库中的报告进行传播。这些指南将适用于有意在UF NHERI EF或任何其他风洞设施将RTHS用于风力应用的调查人员。

This EArly-concept Grant for Exploratory Research (EAGER) will explore the feasibility of Real-Time Hybrid Simulation (RTHS), used for earthquake engineering experimentation, for experimentation for other natural hazards such as extreme wind loadings. RTHS is a cyber-physical systems approach to structural engineering analysis where experimental and numerical components are interfaced to provide the system-level response of a structure that is challenging to test in its entirety. This approach allows complex structural behavior and loading conditions, difficult to model computationally, to be captured experimentally while the remainder of the structure, which can be accurately represented numerically, is simulated to provide increased accuracy and efficiency in the test. To extend RTHS to include aeroelastic testing, aerodynamic RTHS (aeroRTHS) will be explored through tests at the boundary layer wind tunnel (BLWT) at the University of Florida's (UF) NSF-supported Natural Hazards Engineering Research Infrastructure (NHERI) Experimental Facility (EF). The aeroRTHS framework will facilitate the rapid creation, investigation, and validation of the next generation of mitigation strategies by fully capturing the complex fluid-structure interaction in structures needed to investigate the aeroelastic response from wind hazards. The successful realization of the aeroRTHS framework will contribute to the reliability and resilience of the nation's infrastructure by enabling the investigation of an increased number of windstorm hazard mitigation approaches applied to more realistic situations in a non-destructive, cost-effective manner. A cyber-physical systems workshop will be organized and hosted at the UF NHERI EF, in conjunction with other cyber-physical projects utilizing the EF, to facilitate the use of aeroRTHS throughout the wind and seismic research communities. A report summarizing the workshop will be archived in the NHERI Data Depot (https://www.designsafe-ci.org/). This project will provide advanced training to graduate and undergraduate students at the University of Connecticut and Clarkson University through their involvement in the research and aeroRTHS experimentation at the UF NHERI EF. The goals of this project are threefold: (i) to explore the feasibility of RTHS to include aerodynamic testing, (ii) to accelerate the adoption of aeroRTHS advanced testing techniques through implementation in the BLWT at the UF NHERI EF, and (iii) to train a broad spectrum of researchers to utilize aeroRTHS for future research efforts. Numerous technical challenges will be addressed in this research to enable RTHS to be beneficial for aerodynamic/aeroelastic experimentation. These challenges include: actuator compensation; stability analysis; and limitations imposed by the size of the computational substructure, the increased time scale of wind tunnel models, and the type and number of sensor measurements. Achieving these three goals will help accelerate the adoption of RTHS for multi-hazard applications, thus broadening the impact of these advanced testing methodologies within the natural hazards research community. Specific guidelines for equipment, software, and methods needed to conduct aeroRTHS tests will be developed and disseminated at the cyber-physical systems workshop and through a report archived in the NHERI Data Depot. These guidelines will be suitable for investigators interested in employing RTHS for wind applications at the UF NHERI EF or at any other wind tunnel facility.