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Title:Experimental and numerical evaluation of the mechanical behavior of strongly anisotropic light-weight metallic fiber structures under static and dynamic compressive loading
Authors:Andersen, Olaf (Author)
Vesenjak, Matej (Author)
Fiedler, Thomas (Author)
Jehring (Author)
Krstulović-Opara, Lovre (Author)
Files:.pdf Materials_2016_Andersen_et_al._Experimental_and_Numerical_Evaluation_of_the_Mechanical_Behavior_of_Strongly_Anisotropic_Light-Weight_Met.pdf (23,30 MB)
URL http://www.mdpi.com/1996-1944/9/5/398
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Rigid metallic fiber structures made from a variety of different metals and alloys have been investigated mainly with regard to their functional properties such as heat transfer, pressure drop, or filtration characteristics. With the recent advent of aluminum and magnesium-based fiber structures, the application of such structures in light-weight crash absorbers has become conceivable. The present paper therefore elucidates the mechanical behavior of rigid sintered fiber structures under quasi-static and dynamic loading. Special attention is paid to the strongly anisotropic properties observed for different directions of loading in relation to the main fiber orientation. Basically, the structures show an orthotropic behavior; however, a finite thickness of the fiber slabs results in moderate deviations from a purely orthotropic behavior. The morphology of the tested specimens is examined by computed tomography, and experimental results for different directions of loading as well as different relative densities are presented. Numerical calculations were carried out using real structural data derived from the computed tomography data. Depending on the direction of loading, the fiber structures show a distinctively different deformation behavior both experimentally and numerically. Based on these results, the prevalent modes of deformation are discussed and a first comparison with an established polymer foam and an assessment of the applicability of aluminum fiber structures in crash protection devices is attempted.
Keywords:aluminum fiber, fiber structure, orthotropy, sintering, compression, static loading, dynamic loading, energy absorption, numerical simulation
Number of pages:str. 1-20
Numbering:št. 5, Letn. 9
ISSN on article:1996-1944
COBISS_ID:19567126 Link is opened in a new window
DOI:10.3390/ma9050398 Link is opened in a new window
License:CC BY 4.0
This work is available under this license: Creative Commons Attribution 4.0 International
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Record is a part of a journal

Shortened title:Materials
Publisher:Molecular Diversity Preservation International
COBISS.SI-ID:33588485 New window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:P2-063
Name:Design of Porous Structures

Secondary language

Keywords:materiali, struktura vlaken, ortotropija, sintranje, stiskanje, statične obremenitve, dinamične obremenitve, absorpcija energije, numerične simulacije


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