The Characterization of the Stress Fields Near a Crack Tip for a Compact Specimen for Elastic-Plastic Materials Dominated by the Plane Strain State

Author:

Graba M.1

Affiliation:

1. Kielce University and Technology , Faculty of Mechatronics and Mechanical Engineering, Department of Manufacturing Engineering and Metrology , Al. 1000-lecia PP 7, 25-314 Kielce , Poland

Abstract

Abstract The paper presents a comprehensive analysis of the stress field near a crack tip for a compact specimen dominated by the plane strain state using the finite element method. The analysis also includes the calculation of some parameters of in-plane constraints, both for small and large strain assumptions. It discusses the influence of the material characteristic, relative crack length and external load for the stress field, and the in-plane constraint parameter. The approximation formulas for some in-plane constraint parameters are presented.

Publisher

Walter de Gruyter GmbH

Subject

Fluid Flow and Transfer Processes,Transportation,Civil and Structural Engineering

Reference51 articles.

1. [1] ASTM (2005): ASTM E 1820-05 Standard Test Method for Measurement of Fracture Toughness. – American Society for Testing and Materials.

2. [2] ASTM (2011): ASTM E1921-11 Standard test method for determining of reference temperature T0 for ferritic steels in the transition range. – American Society for Testing and Materials.

3. [3] BS 5762 (1979): Methods for crack opening displacement (COD) testing. – London: British Standards Institute.

4. [4] BS 7448 (1991): Part 1. Fracture mechanics toughness tests: Part 1 – Method for determining of KIc, critical CTOD and critical J values of metallic materials. – London: British Standards Institute.

5. [5] PN-87/H-4335, Metals – Test method for measurement of the fracture toughness for plane strain conditions.

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