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Mostrando 25-36 de 149 artigos, teses e dissertações.
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25. A New Approach for Investigation of Mode II Fracture Toughness in Orthotropic Materials
Abstract Estimation of mode II fracture toughness (KIIC) in composite materials is known as a troublous and crucial problem. Dissipated values of KIIC that are reported in different fracture mechanics references is the evidence of the mentioned claim. This problem can signify the necessity of modification on common test methods and fixtures. The present stu
Lat. Am. j. solids struct.. Publicado em: 14/05/2018
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26. Numerical analysis of truss systems with stiffened flattened end-bars
Abstract Circular hollow sections are usually used in long-span roof truss systems. One of the typology for connecting elements in such structures involves the flattening of bar ends. This article presents the numerical analysis of a plane truss composed of circular hollow sections, in which diagonal bars have flattened ends. In this sense, a new flattening
Lat. Am. j. solids struct.. Publicado em: 03/05/2018
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27. Seismic Performance of Post-Northridge Welded Connections
Abstract Post-Northridge welded connections are widely used in engineering projects as lateral-force-resisting systems. In this study, we aim to assess the cyclic performance of the post-Northridge welded connections to compare the connections with each other. For this purpose, we focus on Welded Unreinforced Flange – Welded Web (WUF-W), Welded Flange Pla
Lat. Am. j. solids struct.. Publicado em: 26/04/2018
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28. Numerical Analysis of Twin-Roll Casting of Strips With Profiled Cross-Section
The relatively high production costs of innovative materials with tailored properties such as Tailor Welded Blanks, Patchwork Blanks, Tailor Heat Treated Blanks and Tailor Rolled Blanks are responsible for a growing interest in new cost-effective production methods. One of the promising energy-saving and environmental friendly technologies for the production
Mat. Res.. Publicado em: 16/04/2018
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29. Finite Element Simulation of Welding Distortion in Dissimilar Joint by Inherent Deformation Method
Abstract Fusion welding is widely used to join different parts to each other in various industries. However, welding-induced distortions sometimes cause problems such as misalignment during assembling and impose costs for their removal. Thus, it is imperative to predict and mitigate these problems to improve weldment quality and also reduce fabrication cost
Soldag. insp.. Publicado em: 2018-03
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30. Caracterização dinâmica de uma edificação histórica do século XIX
Resumo As construções históricas possuem elevado significado e importância para a sociedade. Como contribuição à preservação do patrimônio histórico, o presente trabalho apresenta um estudo sobre o comportamento dinâmico de uma edificação histórica, inserida no âmbito do patrimônio histórico da cidade de Sobral, localizada na região norte
Rev. IBRACON Estrut. Mater.. Publicado em: 2018-02
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31. Extruded upper first molar intrusion: Comparison between unilateral and bilateral miniscrew anchorage
RESUMO Objetivos: o presente estudo teve como objetivo avaliar, por meio da Análise de Elementos Finitos, as tensões geradas por forças ortodônticas intrusivas em um molar superior e no osso alveolar circundante. Métodos: um segmento maxilar foi modelado no software SolidWorks 2010 (SolidWorks Corporation, Waltham, MA, EUA), contendo: osso cortical e
Dental Press J. Orthod.. Publicado em: 2018-01
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32. Influence of implantoplasty on stress distribution of exposed implants at different bone insertion levels
Abstract This study evaluated the effect of implantoplasty on different bone insertion levels of exposed implants. A model of the Bone Level Tapered implant (Straumann Institute, Waldenburg, Switzerland) was created through the Rhinoceros software (version 5.0 SR8, McNeel North America, Seattle, WA, USA). The abutment was fixed to the implant through a reten
Braz. oral res.. Publicado em: 07/12/2017
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33. Distortional Failure and DSM Design of Cold-Formed Steel S-Shaped Beams Under Uniform Bending
Abstract This work reports a numerical investigation on the distortional buckling/post-buckling behaviors, ultimate strength and Direct Strength Method (DSM) design of cold-formed steel S-beams, commonly used in industrial rack systems. The analyzed beams are single-span, under uniform bending, exhibiting two different end support conditions and 5 cross-sect
Lat. Am. j. solids struct.. Publicado em: 2017-12
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34. Distribution of stress on TMJ disc induced by use of chincup therapy: assessment by the finite element method
RESUMO Objetivo: avaliar, por meio do método dos elementos finitos, a distribuição das tensões no disco articular produzidas pela mentoneira ortopédica. Métodos: um modelo tridimensional simplificado do disco articular foi desenvolvido com o software Rhinoceros 3D e exportado para o software ANSYS. Uma carga de 4,9 N (500 gf) foi aplicada na superf
Dental Press J. Orthod.. Publicado em: 2017-10
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35. Análise estrutural de vigas mistas treliçadas do tipo steel-joist warren modificada
RESUMO Neste trabalho, determina-se a capacidade resistente e o modo de ruptura de uma viga mista treliçada, bi- apoiada, do tipo steel-joist warren modificada. Esses tipos de treliças, mistas em aço e concreto, são alternativas bastante eficientes para vencer grandes vãos, sendo geralmente empregadas em edifícios comerciais e industriais, além de pon
Matéria (Rio J.). Publicado em: 10/08/2017
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36. Use of green composites for manufacturing small boats in the Amazon: numerical and experimental evaluations
ABSTRACT The Amazon has a great potential of natural resources. There is a wide diversity of plant specimens and many of them can be extracted and processed such as jute, sisal and mauve fibers. It is known that usualy small communities from Amazon build their boats using a rudimentary and ecologically incorrect method, which comes from brazilian natives. Th
Matéria (Rio J.). Publicado em: 01/06/2017