Inner Tubes
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Bearing failure in bolted sleeve connections with circular hollow sections under compression
Abstract This article analyzes sleeve connections between circular hollow sections. This type of connection is composed of two tubes connected by bolts to an inner tube with a smaller diameter, and explores the efficiency, aesthetics and resistance of hollow sections subjected to tension and compression. In previous researches, sleeve connections with aligne
REM, Int. Eng. J.. Publicado em: 2020-06
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2. PREPARATION AND SIMULATION OF THE ON-LINE SiO2/S COATING FOR COKING INHIBITION IN THE INDUSTRIAL CRACKING FURNACE
Abstract Coke formation inside radiant coils is one of the main problems during thermal cracking of hydrocarbons. The on-line preparation of the coating for coking inhibition is a promising technology because it provides more flexibility to the operators on site. The SiO2/S coating was prepared on the inner surface of coils in an 8-year-served GK-VI industri
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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3. Role of multi-layer pyramidal truss cores as an inner material of energy absorbing structures
Abstract In this study, finite element analysis was performed to investigate the feasibility of multi-layered pyramidal truss structures as a filler material of energy absorbing tubes. Rectangular tubes with the filler and empty tubes were compressed at a constant velocity of 10km/h and their energy absorbing capabilities were compared to demonstrate the str
Lat. Am. j. solids struct.. Publicado em: 27/06/2019
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4. Effect of Semi-Apical Angle on the Crush Mechanics of Metallic Bi-Tubular Tubes under Dynamic Axial Loading
ABSTRACT Aerospace and automotive industrial advancement demands high energy absorbing structures for the human and equipement safety during transportaion and accidental emergencies. Thin-walled metallic tubes applications in the structures serve the purpose by absorbing energy during such dynamic scenarios. A new concept is presented in this study, involvin
Matéria (Rio J.). Publicado em: 20/05/2019
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5. Crashworthiness Performance of Stiffened Foam-filled Tapered Structures under Axial and Oblique Dynamic Loads
Abstract This paper aims to explore crashworthiness performance of new designed foam-filled tapered structures under axial and oblique impact load conditions. The structures consisted of inner and outer tapered tubes connected together by four stiffening plates. They also included square, hexagonal, octagonal, decagonal and circular cross-sectional shapes w
Lat. Am. j. solids struct.. Publicado em: 28/06/2018
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6. Axial Crushing of Uni-Sectional Bi-Tubular Inner Tubes with Multiple Outer Cross-Sections
Abstract Increase of energy absorption along with smooth load displacement curve, reduced peak force and high mean crushing force is the key in the modern dynamic design of structures. In this regard, a new metallic tubular configuration consisting of uni-sectional bi-tubular inner tubes, with outer tubes of multiple varied cross-sections is proposed and cru
Lat. Am. j. solids struct.. Publicado em: 2017-12
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7. Influence of shear lag coefficienton circular hollow sections with bolted sleeve connections
Abstract The circular hollow sections (CHS) are being widely employed in steel structures around the world, increasing the development of new researches. This article proposes an innovative connection model for circular hollow sections that facilitates and reduces the assembly cost of hollow section structures. The proposed connection is a tube sleeve, used
REM, Int. Eng. J.. Publicado em: 2017-12
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8. A New Dynamic Powder Consolidation Technique Using Shock Waves
Techniques for shock consolidation of powders have been developed for different purposes, including the synthesis of diamond from carbon powder. In this work, a new device configuration for dynamic consolidation is proposed. It consists of three coaxial tubes, with a conical cover made of explosive at the top of the device. The inner tube contains the powder
Mat. Res.. Publicado em: 13/07/2017
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9. Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading
Abstract To mitigate shock forces in collision events, thin-walled members are used as energy absorber. In this article, crashworthiness of single-cell and multi-cell S-shaped members with various cross-sections including triangular, square, hexagonal, decagon and circular were investigated under axial dynamic loading using finite element code LS-DYNA. Furth
Lat. Am. j. solids struct.. Publicado em: 2017-06
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10. Harmonic differential quadrature method for static analysis of functionally graded single walled carbon nanotubes based on Euler-Bernoulli beam theory
Bending analysis of functionally graded single walled carbon nano tubes is presented in this paper. Carbon nano tubes are modeled as Euler-Bernoulli beam theory in this study. Harmonic differential quadrature (HDQ) method is used to discretize the governing equations. In order to show the accuracy of present work, the results are compared with those of other
Lat. Am. j. solids struct.. Publicado em: 2012-12
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11. Análise de falhas em tubos sem costura de aço St52 utilizados em motores diesel / Failure analysis in seamless pipes of St52 steel used in Diesel Engines
The carbon steel with high manganese in accordance with Din 1.0580 (St52) seamless 8 x 3 mm diameter has been used into fuel injection system of the electronic diesel king with pressure up to 1300 bar. This tube presented short life on durability tests due to inner cracks created during rolling process. The tube produced in Brazil and used nowadays in was co
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/07/2011
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12. Simulação computacional : um estudo de caso em uma empresa fabricante de câmaras de ar pneumáticas
Atualmente o gerenciamento empresarial necessita de uma otimização nos recursos disponibilizados em busca de melhorias na produtividade e qualidade de produtos ou serviços, podendo tornar-se um diferencial para manter clientes. A simulação computacional pode contribuir com esta otimização, permitindo testar alterações para diferentes cenários propo
Publicado em: 2009