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Article
Publication date: 1 October 2019

Cristiane Oliveira Viana, Hermes Carvalho, José Correia, Pedro Aires Montenegro, Raphael Pedrosa Heleno, Guilherme Santana Alencar, Abilio M.P. de Jesus and Rui Calçada

The purpose of this paper is to evaluate the fatigue process through the dynamic analysis of the global structural model and local static sub-modelling in a critical detail using…

Abstract

Purpose

The purpose of this paper is to evaluate the fatigue process through the dynamic analysis of the global structural model and local static sub-modelling in a critical detail using the hot-spot stress approach. The detail was studied in three different positions at the “Alcácer do Sal” access viaduct, and the methodologies from the IIW and Eurocode EN 1993-1-9 were compared.

Design/methodology/approach

In this study, the fatigue life process based on the hot-spot stress approach was evaluated using a global dynamic analysis and a local sub-modelling based on a static analysis of welded connections in the “Alcácer do Sal” railway structure, Portugal, taking into consideration the recommendations from IIW and Eurocode EN 1993-1-9. The hot-spot stresses were calculated through the static analysis of the sub-model of the welded connection for each vibration mode with the aim to obtain the temporal stresses using the modal coordinates and modal stresses of the extrapolation points. The Ansys® and Matlab® softwares were used for the numerical analysis and the hot-spot stress calculations, respectively.

Findings

The proposed methodology/approach to obtain fatigue assessment is based on the modal analysis of the global structural model and local static sub-modelling. The modal analysis was used to extract the boundary conditions to be used in the local model to determine the temporal stresses of the extrapolation points. Based on the modal superposition method, the stresses as function of time were obtained for fatigue life evaluation of a critical detail by the hot-spot stress approach. The detail was studied in three different positions.

Originality/value

In the present study, a global-local fatigue methodology based on dynamic analysis of the global structural model and local static sub-modelling of the critical detail using the hot-spot stress approach is proposed. Herein, the modal analysis of the global structural model supported by the modal superposition method was used to obtain the matrix of modal coordinates. The static analysis of the local sub-model for each mode from the modal analysis of global structural model was done to estimate the hot-spot stresses. The fatigue damage calculation was based on S-N curve of the critical detail and rainflow method. The IIW recommendation proved to be more conservative compared to the proposed rules in the Eurocode EN 1993-1-9. The global-local modelling based on dynamic analysis is an important and effective tool for fatigue evaluation in welded joints.

Details

International Journal of Structural Integrity, vol. 12 no. 1
Type: Research Article
ISSN: 1757-9864

Keywords

Content available
Article
Publication date: 10 November 2021

P.A. Montenegro, José A.F.O. Correia, Abilio M.P. de Jesus and Rui A.B. Calçada

274

Abstract

Details

International Journal of Structural Integrity, vol. 12 no. 6
Type: Research Article
ISSN: 1757-9864

Abstract

Details

The Emergence of Modern Hospital Management and Organisation in the World 1880s–1930s
Type: Book
ISBN: 978-1-78769-989-2

Book part
Publication date: 30 May 2017

Ada Cristina Machado da Silveira, Isabel Padilha Guimarães and Clarissa Schwartz

This chapter examines elements of the regulatory framework in effect in the Brazilian Border Region and neighboring countries as they interact with elements of the culture…

Abstract

This chapter examines elements of the regulatory framework in effect in the Brazilian Border Region and neighboring countries as they interact with elements of the culture industry. Located in what is referred to as the Southern Arc, the first city we examine, Foz do Iguaçu-PR, lies on the border between Paraguay and Argentina. The second city is Tabatinga-AM, part of the conurbation region made up by a Colombian city and including the Peruvian border, coming to be known as the Northern Arc.

Our research was produced through the triangulation of primary data obtained in two trips into the field, carried out in 2013 and 2014, secondary data (official and semi-official) and academic bibliography.

Although projects relating to border integration, citizenship and economic development do exist, they do not question or challenge a nationalistic and politicized regime of representation portraying border areas primarily as routes for cocaine traffic or home to terrorist cells. The representation regime disseminated by mainstream media thus reduces the rich color and dynamics of the region to impoverished tones of gray recognizable in terms of “the name of the other.”

This chapter provides a relevant contribution to our understanding of communication processes carried out in two different regions of Brazil, both of them located far from the spotlights of mainstream Brazilian media. We employ a theoretical framework that combines geography of communication with perspectives on communication in borderland regions.

Book part
Publication date: 2 July 2020

Thiago Pierobom de Ávila

This chapter demonstrates how the reception, adaption and development of gender studies in Brazil and subsequent law reform have created a new theoretical field of feminist…

Abstract

This chapter demonstrates how the reception, adaption and development of gender studies in Brazil and subsequent law reform have created a new theoretical field of feminist criminology with a Southern approach. During the 1980s, Brazilian literature discussed gender violence according to three theories: male domination (Chauí), patriarchal domination (Saffioti) and relational violence (Gregori). Gender theories were introduced and developed during the 1990s. Decolonial studies stressed the deeper intersection of gender with race, social class and other vectors of discrimination, which increases the vulnerability of minority women, particularly black and indigenous women. The increase in gender studies supported political feminist advocacy to promote law reform, such as the Maria da Penha Law, the criminalisation of femicide, reforms related to sexual violence and women in prison. Feminist criminology has both criticised law and used it to promote gender equality on society. Judicial practices indicate the conservative resistance of the juridical field to assimilating gender debates and feminist critical theories as a whole.

Details

The Emerald Handbook of Feminism, Criminology and Social Change
Type: Book
ISBN: 978-1-78769-956-4

Keywords

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