Reliability-based topology optimization of bridge structures using first and second order reliability methods

Reliability-based topology optimization (RBTO) results in an optimal topology satisfying given constraints with consideration of uncertainties in the variables. Due to inherent uncertainties, including external loading, material properties, and the quality of construction, prototypes and products ma...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Meysam Johari, Behrouz Ahmadi Nedushan
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2017
Materias:	topology optimization reliability analysis second order reliability method simp rbto Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/3c3cc538e3054985914904f0f1072093
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:3c3cc538e3054985914904f0f1072093
record_format	dspace
spelling	oai:doaj.org-article:3c3cc538e3054985914904f0f10720932021-11-08T15:46:28ZReliability-based topology optimization of bridge structures using first and second order reliability methods2476-39772538-261610.22065/jsce.2016.40432https://doaj.org/article/3c3cc538e3054985914904f0f10720932017-05-01T00:00:00Zhttps://www.jsce.ir/article_40432_04325989891d5b2085c09ccb7ae5cb28.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Reliability-based topology optimization (RBTO) results in an optimal topology satisfying given constraints with consideration of uncertainties in the variables. Due to inherent uncertainties, including external loading, material properties, and the quality of construction, prototypes and products may not satisfy the essential functions required. In RBTO, each of these uncertain parameters are treated as random variables and reliability constraints are used in the formulation of the topology optimization problem to obtain a more reliable structure. In this article, RBTO was applied to obtain reliable topologies for two bridge structures using the Solid Isotropic Microstructure with Penalization (SIMP). The first and second order reliability methods are used as reliability analysis methods to take into account the uncertainties of the load, Young's modulus and thickness. It was found that in optimal topologies obtained by RBTO, the corresponding compliance values are higher than values obtained by deterministic topology optimization (DTO) and increase the number of uncertain parameters which results in softer structures with higher compliances.Meysam JohariBehrouz Ahmadi NedushanIranian Society of Structrual Engineering (ISSE)articletopology optimizationreliability analysissecond order reliability methodsimprbtoBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 4, Iss 1, Pp 5-18 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	topology optimization reliability analysis second order reliability method simp rbto Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	topology optimization reliability analysis second order reliability method simp rbto Bridge engineering TG1-470 Building construction TH1-9745 Meysam Johari Behrouz Ahmadi Nedushan Reliability-based topology optimization of bridge structures using first and second order reliability methods
description	Reliability-based topology optimization (RBTO) results in an optimal topology satisfying given constraints with consideration of uncertainties in the variables. Due to inherent uncertainties, including external loading, material properties, and the quality of construction, prototypes and products may not satisfy the essential functions required. In RBTO, each of these uncertain parameters are treated as random variables and reliability constraints are used in the formulation of the topology optimization problem to obtain a more reliable structure. In this article, RBTO was applied to obtain reliable topologies for two bridge structures using the Solid Isotropic Microstructure with Penalization (SIMP). The first and second order reliability methods are used as reliability analysis methods to take into account the uncertainties of the load, Young's modulus and thickness. It was found that in optimal topologies obtained by RBTO, the corresponding compliance values are higher than values obtained by deterministic topology optimization (DTO) and increase the number of uncertain parameters which results in softer structures with higher compliances.
format	article
author	Meysam Johari Behrouz Ahmadi Nedushan
author_facet	Meysam Johari Behrouz Ahmadi Nedushan
author_sort	Meysam Johari
title	Reliability-based topology optimization of bridge structures using first and second order reliability methods
title_short	Reliability-based topology optimization of bridge structures using first and second order reliability methods
title_full	Reliability-based topology optimization of bridge structures using first and second order reliability methods
title_fullStr	Reliability-based topology optimization of bridge structures using first and second order reliability methods
title_full_unstemmed	Reliability-based topology optimization of bridge structures using first and second order reliability methods
title_sort	reliability-based topology optimization of bridge structures using first and second order reliability methods
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2017
url	https://doaj.org/article/3c3cc538e3054985914904f0f1072093
work_keys_str_mv	AT meysamjohari reliabilitybasedtopologyoptimizationofbridgestructuresusingfirstandsecondorderreliabilitymethods AT behrouzahmadinedushan reliabilitybasedtopologyoptimizationofbridgestructuresusingfirstandsecondorderreliabilitymethods
_version_	1718441651505987584

Reliability-based topology optimization of bridge structures using first and second order reliability methods

Ejemplares similares