A Simplified Setup for Thermo-Mechanical Dynamic Testing of Structures Using Hybrid Simulation
摘要
As we advance towards the development of resilient communities, there arises a crucial necessity for a deeper understanding of structural behaviours under elevated temperatures. Achieving a comprehensive grasp of structural dynamics entails acquiring experimental data across various temperature ranges and under different boundary conditions. Such experimental data is pivotal for understanding the underlying physics. It also plays a vital role in both refining and validating numerical models used for predicting structural behaviours at elevated temperatures. Conventional testing methods primarily involve element-level testing, which neglects the interaction between the specimen and its surrounding structure. While full-scale testing remains an option, it is often deemed economically impractical. In this regard, hybrid simulation emerges as a promising alternative for achieving a more realistic and precise evaluation of structural responses under elevated temperatures. Hybrid thermo-mechanical dynamic testing integrates a physical substructure (PS) - the test specimen exposed to elevated temperatures - with a virtual substructure (VS) representing the surrounding structure. A transfer system (TS), typically in the form of an actuator, facilitates the interaction between these two substructures. This paper introduces a simplified setup designed for conducting hybrid thermo-mechanical dynamic testing at the laboratory scale. The controllers are designed for SDOF and MDOF VSs. The Time Series (TS) with the designed controller accurately captures the resonances of the VS within