Fuzzy Structural Analysis Using Improved Jaya-based Optimization Approach

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Periodica Polytechnica-Civil Engineering Pub Date : 2023-08-16 DOI:10.3311/ppci.22818

H. Pham, B. Nguyen

引用次数: 0

Abstract

A new approach to performing the α-level optimization in the fuzzy analysis of structural systems is developed in this study. The method uses a simple global optimizer, the Jaya algorithm, together with an innovative dimension reduction technique. The dimension reduction technique aims to transform the original large α-level optimization problem into a low-dimension one by making use of the monotonic behavior of the system output with respect to the input variables. Then, the Jaya algorithm is applied to solve the reduced max/min α-level optimization problems to determine the bounds of the fuzzy output. Two numerical examples, including a 2D truss and a 3D truss, with a relatively large number of fuzzy input variables are analyzed and the fuzzy displacements under static loads are predicted. It is demonstrated that the proposed approach can save a significant computational amount and also estimate the fuzzy displacement with high accuracy.

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基于改进jaya优化方法的模糊结构分析

本文提出了一种结构系统模糊分析中α-级优化的新方法。该方法使用一个简单的全局优化器，即Jaya算法，以及一种创新的降维技术。降维技术的目的是利用系统输出相对于输入变量的单调性，将原来的大α级优化问题转化为低维优化问题。然后，应用Jaya算法求解最小化max/min α级优化问题，确定模糊输出的界。分析了具有较多模糊输入变量的二维桁架和三维桁架两个数值算例，并对静荷载作用下的模糊位移进行了预测。实验结果表明，该方法不仅节省了大量的计算量，而且具有较高的模糊位移估计精度。

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

Periodica Polytechnica-Civil Engineering 工程技术-工程：土木

CiteScore

3.40

自引率

16.70%

发文量

审稿时长

12 months

期刊介绍： Periodica Polytechnica Civil Engineering is a peer reviewed scientific journal published by the Faculty of Civil Engineering of the Budapest University of Technology and Economics. It was founded in 1957. Publication frequency: quarterly. Periodica Polytechnica Civil Engineering publishes both research and application oriented papers, in the area of civil engineering. The main scope of the journal is to publish original research articles in the wide field of civil engineering, including geodesy and surveying, construction materials and engineering geology, photogrammetry and geoinformatics, geotechnics, structural engineering, architectural engineering, structural mechanics, highway and railway engineering, hydraulic and water resources engineering, sanitary and environmental engineering, engineering optimisation and history of civil engineering. The journal is abstracted by several international databases, see the main page.