Janez Kramberger (Author), Klemen Sterkuš (Author), Srečko Glodež (Author)

Abstract

The investigation of low-cycle fatigue behaviour of lotus-type porous material is presented in this paper. Porous materials exhibit some unique features which are useful for a number of various applications. This paper evaluates a numerical approach for determining of damage initiation and evolution of lotus-type porous material with computational simulations, where the considered computational models have different pore topology patterns. The low-cycle fatigue analysis was performed by using a damage evolution law. The damage state was calculated and updated based on the inelastic hysteresis energy for stabilized cycle. Degradation of the elastic stiffness was modelled using scalar damage variable. In order to examine crack propagation path finite elements with severe damage were deleted and removed from the mesh during simulation. The direct cyclic analysis capability in Abaqus/Standard was used for low-cycle fatigue analysis to obtain the stabilized response of a model subjected to the periodic loading. The computational results show a qualitative understanding of pores topology influence on low-cycle fatigue under transversal loading conditions in relation to pore orientation.

Keywords

porozni materiali;malo-ciklično utrujanje;poškodba;metoda končnih elementov;porous materials;low-cycle fatigue;damage;finite element analysis;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
UDC: 621.7+621.9
COBISS: 19253782 Link will open in a new window
ISSN: 1971-8993
Views: 713
Downloads: 341
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Other data

Secondary language: Slovenian
Secondary keywords: porozni materiali;malo-ciklično utrujanje;poškodba;metoda končnih elementov;
URN: URN:SI:UM:
Type (COBISS): Scientific work
Pages: Str. 142-151
Issue: ǂNo. ǂ35
Chronology: January 2016
DOI: 10.3221/IGF-ESIS.35.17
ID: 10850928