Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/25295

TitleNumerical study on the sensitivity analysis for strenght and stiffness of regular cellular solids
Author(s)Silva, Hugo Miguel
Peixinho, Nuno
Silva, Filipe Samuel
KeywordsFEM
Optimization
Periodic cellular solids
Sensitivity analysis
Optimization cellular solids
Issue date2013
JournalInternational Journal of Applied Research in Mechanical Engineering
Abstract(s)The aim of this study is to present a sensitivity analysis of geometric variables on the mechanical behavior of regular cellular solids. The cellular solids studied are named “spherical” and “elliptical”, if there is part of an empty sphere inside or if there is part of an empty revolved ellipse, respectively. Pure loads are applied separately, namely compression and shear, in order to study the influence of the variables on axial stress and axial displacement (compression) and shear stress and shear strain on shear. The sensitivity analysis is useful to establish limits for the studied variables in an optimization process and to know the influence of the variables on the results. In the case that a variable has little or no influence on the results; it must be evaluated if it is worth using it. In this work, the influence of two geometric variables, namely stacking and radius were studied for two types of regular cellular solids. The solids are composed by 7*7*7 base cells. The maximum axial stress and axial displacement were measured on compression for each model. On shear, the maximum shear stress and the maximum shear strain on the plane that is sensitive to the variation of the studied variable were taken. Three models were studied in each case. The influence of the studied geometric variables on the results are presented and discussed. It is found that all the variables have influence on the results, although in a different manner.
TypeArticle
URIhttp://hdl.handle.net/1822/25295
ISSN2231–5950
Publisher versionhttp://interscience.in/IJARME_Vol3Iss1/93-98.pdf
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CT2M - Artigos em revistas de circulação internacional com arbitragem científica

Files in This Item:
File Description SizeFormat 
93-98.pdf
  Restricted access
Artigo em pdf406,1 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID