Vol.9, No1, 2009, pp. 29-38
 UDC 539.42

A COMPARATIVE ANALYSIS OF ENGINEERING METHODS IN FRACTURE MECHANICS

Miodrag Kirić, Aleksandar Sedmak, Jasmina Lozanović 1

Radoljub Tomić 2

1 Innovation Centre, Faculty of Mechanical Engineering, University of Belgrade

2 Prva petoletka - NIC AD, Serbia

Abstract

In this paper King’s line spring model for surface cracks is analyzed and it is shown that interesting relations can be derived starting from analytical expressions of the model. King’s model is compared with the line spring model of Rice and Levi. Significant similarities between two models are shown, but King’s model extends the application of the approach to elastic-plastic region. FAD based on EPRI approach and SINTAP method are also analyzed.

Keywords: line spring model, crack, fracture, conservatism, elastic-plastic region

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