Computational framework for a family of methods based on stress-constrained topology optimization

IF 4.4 2区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Computers & Structures Pub Date : 2024-08-02 DOI:10.1016/j.compstruc.2024.107493
Piotr Tauzowski , Bartlomiej Blachowski , János Lógó
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Abstract

This study presents a general computational framework for topology optimization under constraints related to various engineering design problems, including: reliability analysis, low-cycle fatigue assessment, and stress limited analysis. Such a framework aims to facilitate comprehensive engineering design considerations by incorporating traditional constraints such as displacement and stress alongside probabilistic assessments of fatigue failure and the complex behaviors exhibited by structures made of elastoplastic material. The framework's amalgamation of diverse analytical components offers engineers a versatile toolkit to address intricate design challenges. Notably, the inclusion of reliability analysis introduces a probabilistic perspective, transforming conventional design constraints into random parameters, thereby enhancing the robustness of the design process.

Key to the framework's efficacy is its implementation using MATLAB mathematical computing software, leveraging the platform's efficient code execution and object-oriented programming paradigm. This choice ensures an intuitive and potent environment for designers and researchers, facilitating seamless adaptation across various engineering applications. Additionally, the proposed previously by the Authors algorithm for the topology optimization is extended by adaptive strategy allowing for efficient adjustment of an amount of material removed at individual optimization step.

The presented framework is offering a comprehensive and integrated approach to address multifaceted design challenges while enhancing design robustness and efficiency.

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基于应力约束拓扑优化的一系列方法的计算框架
本研究提出了一个通用计算框架,用于在与各种工程设计问题相关的约束条件下进行拓扑优化,这些问题包括:可靠性分析、低周期疲劳评估和应力限制分析。这种框架旨在通过将位移和应力等传统约束条件与疲劳失效概率评估以及弹性材料结构所表现出的复杂行为结合起来,促进全面的工程设计考虑。该框架融合了各种分析组件,为工程师提供了一个多功能工具包,以应对复杂的设计挑战。值得注意的是,可靠性分析的加入引入了概率视角,将传统的设计约束转化为随机参数,从而增强了设计过程的稳健性。
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来源期刊
Computers & Structures
Computers & Structures 工程技术-工程:土木
CiteScore
8.80
自引率
6.40%
发文量
122
审稿时长
33 days
期刊介绍: Computers & Structures publishes advances in the development and use of computational methods for the solution of problems in engineering and the sciences. The range of appropriate contributions is wide, and includes papers on establishing appropriate mathematical models and their numerical solution in all areas of mechanics. The journal also includes articles that present a substantial review of a field in the topics of the journal.
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