Determining of three collinear cracks opening displacement using the process zone model

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:50

Article

Kaminsky, A. A.¹  Selivanov, M. F.¹  Chornoivan, Y. O.¹ 

[1] Natl Acad Sci, SP Timoshenko Inst Mech, UA-03057 Kiev, Ukraine

关键词: Multiple site damage;    Process zone;    Crack opening displacement;   

DOI  :  10.1016/j.ijsolstr.2013.05.010

来源: Elsevier

【 摘 要 】

The general failure of structures is often preceded by the growth and coalescence of intermediate cracks. In this work, a model with process zone is used to study the deformed state of an infinite isotropic body with three collinear cracks. A numerical algorithm is presented to obtain crack opening displacements effectively. The problem is analyzed for all possible cases of mutual location of the cracks and different levels of loading. The numerical solution shows negligible influence of two cracks coalescence process on the opening displacement of the third crack. An example of the results implementation to calculate crack initiation duration in a problem for viscoelastic body is given. (c) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

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