Numerical evaluation of an innovative hybrid seismic control system with amplified energy dissipation

IF 5.7 2区工程技术 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Advances in Engineering Software Pub Date : 2025-03-02 DOI:10.1016/j.advengsoft.2025.103898

Mohammad Seddiq Eskandari Nasab , Mohammad Bafandegan , Jung-Wuk Hong

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引用次数: 0

Abstract

Seismic protection is vital for mitigating structural damage and enhancing resilience. We propose a novel hybrid energy dissipation system combining viscous and magnetorheological dampers with a spring mechanism and mechanical lever arms. These lever arms amplify drift and velocity, boosting energy dissipation efficiency while reducing the size or number of dampers needed. The system's performance was evaluated through numerical analysis on two prototype structures: a seven-story linear building under harmonic excitation and a three-story nonlinear building under seismic loading. Analyses included passive-on and semi-active modes with a simple adaptive control algorithm. The system significantly reduced displacements, accelerations, and residual deformations. For example, displacements in the seven-story building decreased by up to 83 % under harmonic loading, while the three-story building saw interstory drift reductions of 30 % in passive-on mode and 11 % in semi-active mode. These findings demonstrate the system's potential to enhance seismic resilience, offering a versatile solution for earthquake-resistant design and retrofitting.

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一种新型放大耗能混合地震控制系统的数值评价

地震防护对于减轻结构损坏和提高抗震能力至关重要。我们提出了一种新型混合消能系统，将粘滞和磁流变阻尼器与弹簧机构和机械杠杆臂相结合。这些杠杆臂可放大漂移和速度，提高消能效率，同时减少所需的阻尼器尺寸或数量。通过对两个原型结构进行数值分析，对系统的性能进行了评估：一个是谐波激励下的七层线性建筑，另一个是地震荷载下的三层非线性建筑。分析包括采用简单自适应控制算法的被动-主动和半主动模式。该系统大大减少了位移、加速度和残余变形。例如，在谐波荷载作用下，七层建筑的位移减少了 83%，而三层建筑在被动开启模式下的层间漂移减少了 30%，在半主动模式下减少了 11%。这些研究结果表明，该系统具有增强抗震能力的潜力，为抗震设计和改造提供了一种多功能解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Engineering Software 工程技术-计算机：跨学科应用

CiteScore

7.70

自引率

4.20%

发文量

169

审稿时长

37 days

期刊介绍： The objective of this journal is to communicate recent and projected advances in computer-based engineering techniques. The fields covered include mechanical, aerospace, civil and environmental engineering, with an emphasis on research and development leading to practical problem-solving. The scope of the journal includes: • Innovative computational strategies and numerical algorithms for large-scale engineering problems • Analysis and simulation techniques and systems • Model and mesh generation • Control of the accuracy, stability and efficiency of computational process • Exploitation of new computing environments (eg distributed hetergeneous and collaborative computing) • Advanced visualization techniques, virtual environments and prototyping • Applications of AI, knowledge-based systems, computational intelligence, including fuzzy logic, neural networks and evolutionary computations • Application of object-oriented technology to engineering problems • Intelligent human computer interfaces • Design automation, multidisciplinary design and optimization • CAD, CAE and integrated process and product development systems • Quality and reliability.