Original scientific paper

Fatigue behaviour of lotus-type porous structure: numerical approach

Matjaž Šrambl orcid.org/0000-0002-0638-2703 ; Faculty of Civil Engineering, University of Maribor, Maribor, Slovenia
Janez Kramberger orcid.org/0000-0001-9112-1091 ; Faculty of Mech. Engineering, University of Maribor, Maribor, Slovenia
Sašo Dervarič ; Faculty of Mech. Engineering, University of Maribor, Maribor, Slovenia
Srečko Glodež ; Faculty of Mech. Engineering, University of Maribor, Maribor, Slovenia

Abstract

The objective of this paper is to analyse fatigue strength behaviour of lotus-type structure with nodular cast iron as a base material. The number of stress cycles required for crack propagation from initial to the critical crack length is numerically determined using finite element (FE) models, in the frame of Abaqus computation FEM code. The maximum tensile stress (MTS) criterion is considered when analyzing the crack path inside the porous structure. The performed computational analyses show that stress concentrations around individual pores are higher when external loading is acting in transversal direction in respect to the pore distribution. The actual paper is prolongation of the work, presented at the last MATRIB conference in 2014 [1].

Keywords

Lotus-type porous structures; fatigue strength; numerical analysis

Hrčak ID:

149750

URI

https://hrcak.srce.hr/149750

Publication date:

15.12.2015.

Article data in other languages: croatian

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