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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2018.tde-12112018-075424
Document
Author
Full name
Guilherme Namindome
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2018
Supervisor
Committee
Souza, Gilberto Francisco Martha de (President)
Bittencourt, Túlio Nogueira
Pavanello, Renato
Title in Portuguese
Processo de avaliação probabilística de integridade estrutural aplicado à otimização dimensional de elementos estruturais.
Keywords in Portuguese
Estruturas (Confiabilidade)
Fadiga das estruturas
Mecânica da fratura
Abstract in Portuguese
Este trabalho de pesquisa visa apresentar um processo de avaliação probabilística de integridade mecânica de elementos estruturais, e ilustra sua aplicação em situações de otimização dimensional de tais elementos. O processo apresentado é baseado na análise de confiabilidade por métodos analíticos, utilizando o diagrama de avaliação de falha (FAD) como critério de falha. A escolha da curva FAD como critério de falha visa padronizar a análise de confiabilidade estrutural, permitindo a sua aplicação tanto em simulações numéricas quanto em mapas utilizados para rápidas tomadas de decisão. Os métodos de análise e o processo apresentado são aplicados em casos de estudo para mostrar a influência da percepção probabilística nas tomadas de decisão de projeto e a importância da análise de risco no dimensionamento de sistemas estruturais.
Title in English
Process for probabilistic assessment of structural integrity applied to dimensional optimization of structural elements.
Keywords in English
Failure probability
Fatigue
Fracture mechanics
Structural cost
Structural reliability
Abstract in English
This work intends to present a process for probabilistic assessment of mechanical integrity of structural elements, and illustrates its application in situations of dimensional optimization of such elements. The presented process is based on the reliability analysis by analytical methods, using the failure assessment diagram (FAD) as failure criteria. The choice of FAD curve as a failure criteria aims to standardize the structural reliability analysis, allowing its application both in numerical simulations and in chart maps used for fast decision making. The methods of analysis and the presented process are applied in case studies to show the influence of probabilistic perception on project decision making and the importance of risk analysis in the design of structural systems.
 
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Publishing Date
2018-11-13
 
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