Paper Title:

Numerical and Analytical Modelling of Elastic-Plastic Fracture Mechanics Parameters

Periodical Materials Science Forum (Volume 555)
Main Theme Research Trends in Contemporary Materials Science
Edited by Dragan P. Uskoković, Slobodan K. Milonjić and Dejan I. Raković
Pages 565-570
DOI 10.4028/www.scientific.net/MSF.555.565
Citation Lj. Milović et al., 2007, Materials Science Forum, 555, 565
Online since September, 2007
Authors Lj. Milović, Aleksandar Sedmak, Stojan Sedmak, S. Putić, Misa Zrilić
Keywords Elasto-Plastic Analysis, Fracture Mechanics Parameter, Numerical Modeling, Structural Integrity
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Abstract

Structural integrity and service reliability depend on the fracture resistance of a material. Cracks in the material are the locations of stress concentration, and elastic-plastic deformation can occur causing the development of mixed-mode type of fracture ahead the crack tip. Crack behavior in the elastic-plastic region is analyzed applying numerical and analytical simulation based on fracture mechanics parameters, characterizing the response of the material at the crack tip. Numerical and analytical results are compared with the corresponding experimental results obtained in previously performed fracture mechanics tests with standard single-edge notch bending – SEN(B) specimens. The comparison shows an acceptable level of agreement, enabling application of the proposed numerical model of crack growth in the mixed-mode fracture analysis for structural integrity assessment.