A coupled scaled boundary finite element and phase-field algorithm for seismic loading

IF 4.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Analysis with Boundary Elements Pub Date : 2024-10-24 DOI:10.1016/j.enganabound.2024.106009

Yue Zhuo , Degao Zou , Kai Chen , Jingmao Liu , Yongqian Qu , Guoyang Yi

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引用次数: 0

Abstract

Seismic-induced damage, integral to the safety evaluations of major engineering projects, persists as a key focus of research worldwide. Based on the Scaled Boundary Finite Element Method (SBFEM) and the Phase-Field Method (PFM), a coupled algorithm tailored for reciprocal loading was introduced in this paper, integrating strategies including "closure constraints," "numerical threshold strategy," and "subdomain block integration." Adopting object-oriented principles, a universal coupling solution framework has been built and seamlessly embedded within GEODYNA, a self-developed finite element software system. The accuracy was validated through rigorous benchmark tests. The entire process of crack initiation, propagation, and dynamic opening-closing cycles in the Koyna concrete gravity dam was reproduced. Furthermore, the effect of mesh size and computational timestep on the structural seismic response, crack localization, and the extent of damage in the dam were explored. The outcomes demonstrated that the SBFEM-PFM coupling algorithm performs effectively and meets the engineering precision criteria for seismic evaluations and reinforcement analyses of crucial structures.

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地震加载的耦合比例边界有限元和相场算法

地震诱发的破坏是重大工程项目安全评估不可或缺的一部分，一直是全球研究的重点。本文以比例边界有限元法（SBFEM）和相场法（PFM）为基础，结合 "闭合约束"、"数值阈值策略 "和 "子域分块集成 "等策略，介绍了一种专为往复加载量身定制的耦合算法。采用面向对象的原则，建立了一个通用耦合解决方案框架，并无缝嵌入到自主开发的有限元软件系统 GEODYNA 中。通过严格的基准测试验证了其准确性。Koyna 混凝土重力坝的裂缝萌发、扩展和动态开合循环的整个过程都得到了再现。此外，还探讨了网格大小和计算时间步长对大坝结构地震响应、裂缝定位和损坏程度的影响。结果表明，SBFEM-PFM 耦合算法在关键结构的抗震评估和加固分析中表现有效，符合工程精度标准。

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

Engineering Analysis with Boundary Elements 工程技术-工程：综合

CiteScore

5.50

自引率

18.20%

发文量

368

审稿时长

56 days

期刊介绍： This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods. Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness. The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields. In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research. The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods Fields Covered: • Boundary Element Methods (BEM) • Mesh Reduction Methods (MRM) • Meshless Methods • Integral Equations • Applications of BEM/MRM in Engineering • Numerical Methods related to BEM/MRM • Computational Techniques • Combination of Different Methods • Advanced Formulations.