APPLICATION OF GLOBAL OPTIMIZATION TO PREDICT STRAINS IN RC COMPRESSED COLUMNS
Authors:
- Marek Lechman,
- Andrzej Stachurski
Abstract
In this paper, the results of an application of global and local optimization methods to solve a problem of determination of strains in RC compressed structure members are presented. Solutions of appropriate sets of nonlinear equations in the presence of box constraints have to be found. The use of the least squares method leads to finding global solutions of optimization problems with box constraints. Numerical examples illustrate the effects of the loading value and the loading eccentricity on the strains in concrete and reinforcing steel in the a cross-section.Three different minimization methods were applied to compute them: trust region reflective, genetic algorithm tailored to problems with real double variables and particle swarm method. Numerical results on practical data are presented. In some cases, several solutions were found. Their existence has been detected by the local search with multistart, while the genetic and particle swarm methods failed to recognize their presence.
- Record ID
- WUT36aa6767fb0e45978b900b7bac352972
- Author
- Journal series
- ACTA POLYTECHNICA, Journal of Advanced Engineering, ISSN 1805-2363, e-ISSN 1805-2363, [1210-2709]
- Issue year
- 2021
- Vol
- 61
- No
- 1
- Pages
- 242-252
- Publication size in sheets
- 0.50
- Keywords in English
- Global optimization, nonlinear equations, least squares method, RC compressed structure members
- ASJC Classification
- DOI
- DOI:10.14311/AP.2021.61.0242 Opening in a new tab
- URL
- https://ojs.cvut.cz/ojs/index.php/ap/article/view/6786 Opening in a new tab
- Language
- eng (en) English
- File
-
- File: 1
- Lechman Stachurski Acta 2021.pdf
-
- Score (nominal)
- 40
- Score source
- journalList
- Score
- = 40.0, 13-05-2022, ArticleFromJournal
- Publication indicators
- = 0; = 0; : 2018 = 0.489
- Uniform Resource Identifier
- https://repo.pw.edu.pl/info/article/WUT36aa6767fb0e45978b900b7bac352972/
- URN
urn:pw-repo:WUT36aa6767fb0e45978b900b7bac352972
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.