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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Hybrid testing with model updating on steel panel damper substructures using a multi-axial testing system
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Hybrid testing with model updating on steel panel damper substructures using a multi-axial testing system

机译：使用多轴测试系统对钢板减震器子结构进行模型更新的混合测试

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This paper describes a series of hybrid tests performed on a steel panel damper (SPD) specimen by using a multi-axial testing system. The building under investigation adopted a three-dimensional six-story moment resisting frame with four SPDs installed at each story as the main seismic resisting system. The structural model was subjected to bi-directional ground excitations of three hazard levels. The finite element analysis program "Platform of Inelastic Structural Analysis for 3D Systems" (PISA3D) was used as the analysis kernel for hybrid tests. Relevant programming extensions in PISA3D were created to support geographically distributed hybrid testing in a general-purpose manner. An external displacement control (EDC) method was developed such that the actual boundary deformation of the specimen fixtures could be continuously measured and immediately compensated during tests. An online model updating (OMU) technique was developed and employed such that the material properties of the specimen could be identified directly from the specimen response during the test. The identified material properties were then immediately used to update those of the other relevant numerical elements to enhance the overall simulation fidelity. Superior flexibility of the underlying software architecture was well demonstrated in this series of hybrid tests since no hardcoding was used to support all the complex test settings. Test results confirmed the effectiveness of the proposed EDC method, as well as the capacity of the proposed OMU technique to satisfactorily and efficiently capture the hysteretic properties of the specimen.
机译：本文介绍了使用多轴测试系统对钢板阻尼器（SPD）样品进行的一系列混合测试。被调查建筑物采用了三维六层抗力矩框架，每个楼层都安装了四个SPD作为主要抗震系统。结构模型受到三个危险等级的双向地面激励。有限元分析程序“ 3D系统非弹性结构分析平台”（PISA3D）被用作混合测试的分析内核。在PISA3D中创建了相关的编程扩展，以通用方式支持地理分布的混合测试。开发了外部位移控制（EDC）方法，以便可以连续测量样品夹具的实际边界变形并在测试过程中立即进行补偿。开发并采用了在线模型更新（OMU）技术，以便可以在测试过程中直接从样本响应中识别出样本的材料特性。然后，立即将识别出的材料属性用于更新其他相关数字元素的属性，以增强整体模拟的保真度。由于没有使用硬编码来支持所有复杂的测试设置，因此在此系列的混合测试中充分展示了底层软件体系结构的出色灵活性。测试结果证实了所提出的EDC方法的有效性，以及所提出的OMU技术令人满意且有效地捕获标本的滞回特性的能力。

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