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Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern

This paper investigates the initial yield surface of a new type of hollow sphere structure (HSS). For this new type, the sphere shell is perforated by several holes in order to open the inner sphere volume and surface. Multi-axial tensile loading is applied to investigate the initial yield surface o...

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Main Authors: Hosseini, Seyed Mohammad Hossein, Öchsner, Andreas, Fiedler, Thomas
Format: Article
Published: Elsevier B.V. 2011
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/29622/
http://dx.doi.org/10.1016/j.finel.2011.02.011
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spelling my.utm.296222019-04-25T01:18:11Z http://eprints.utm.my/id/eprint/29622/ Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern Hosseini, Seyed Mohammad Hossein Öchsner, Andreas Fiedler, Thomas TJ Mechanical engineering and machinery This paper investigates the initial yield surface of a new type of hollow sphere structure (HSS). For this new type, the sphere shell is perforated by several holes in order to open the inner sphere volume and surface. Multi-axial tensile loading is applied to investigate the initial yield surface of perforated HSS with ideal plastic base material properties. The influence of the hole diameters and different geometries of linking elements on the initial yield surface are shown. The results are compared to classical configurations without perforation. It is shown that the initial yield surface can be represented as a cone in the principal stress coordinate system. Increasing of the hole diameter (decreasing of the average density) decreases the diameter of this cone. Compared to the changes for different hole diameters, the shape of the initial yield surface is less sensitive to the geometry of the link between two spheres. In addition, the elastic properties of PHSS, i.e. Young's modulus and Poisson's ratio, are investigated. To this end, three-dimensional finite element analysis is used to investigate primitive cubic unit cell models. Elsevier B.V. 2011-07 Article PeerReviewed Hosseini, Seyed Mohammad Hossein and Öchsner, Andreas and Fiedler, Thomas (2011) Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern. Finite Elements in Analysis and Design, 47 (7). pp. 804-811. ISSN 0168-874X http://dx.doi.org/10.1016/j.finel.2011.02.011 DOI:10.1016/j.finel.2011.02.011
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Hosseini, Seyed Mohammad Hossein
Öchsner, Andreas
Fiedler, Thomas
Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern
description This paper investigates the initial yield surface of a new type of hollow sphere structure (HSS). For this new type, the sphere shell is perforated by several holes in order to open the inner sphere volume and surface. Multi-axial tensile loading is applied to investigate the initial yield surface of perforated HSS with ideal plastic base material properties. The influence of the hole diameters and different geometries of linking elements on the initial yield surface are shown. The results are compared to classical configurations without perforation. It is shown that the initial yield surface can be represented as a cone in the principal stress coordinate system. Increasing of the hole diameter (decreasing of the average density) decreases the diameter of this cone. Compared to the changes for different hole diameters, the shape of the initial yield surface is less sensitive to the geometry of the link between two spheres. In addition, the elastic properties of PHSS, i.e. Young's modulus and Poisson's ratio, are investigated. To this end, three-dimensional finite element analysis is used to investigate primitive cubic unit cell models.
format Article
author Hosseini, Seyed Mohammad Hossein
Öchsner, Andreas
Fiedler, Thomas
author_facet Hosseini, Seyed Mohammad Hossein
Öchsner, Andreas
Fiedler, Thomas
author_sort Hosseini, Seyed Mohammad Hossein
title Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern
title_short Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern
title_full Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern
title_fullStr Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern
title_full_unstemmed Numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern
title_sort numerical investigation of the initial yield surface of perforated hollow sphere structures (phss) in a primitive cubic pattern
publisher Elsevier B.V.
publishDate 2011
url http://eprints.utm.my/id/eprint/29622/
http://dx.doi.org/10.1016/j.finel.2011.02.011
_version_ 1643648338025775104
score 13.211869

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