An Object-Oriented Approach for Modeling and Simulation of Crack Growth in Cyclically Loaded Structures

D. Cojocaru; Anette M Karlsson

doi:10.1016/j.advengsoft.2008.01.009

An Object-Oriented Approach for Modeling and Simulation of Crack Growth in Cyclically Loaded Structures

D. Cojocaru
, Anette M Karlsson

University of Delaware

Research output: Contribution to journal › Article › peer-review

Abstract

We present an object-oriented modeling frame for simulating crack propagation due to cyclic loadings. Central to the approach is that the crack propagates when a user-defined propagation criterion is fulfilled, i.e., the crack propagation rate is not prescribed but predicted. The approach utilizes the commercial finite element software package ABAQUS and its associated Python based scripting interface. The crack propagation is simulated by a generalized node release technique. If the propagation criteria are satisfied in the end of a cycle, the crack is allowed to propagate. The incremental crack growth is inferred from an iterative investigation of the propagation criteria. The propagation criteria are user-defined, and can be based on any parameter or parameter set that can be obtained from the simulations. We illustrate the developed modeling frame by two benchmark problems, where the propagation criterion is based on the dissipated energy in the vicinity of the crack tip.

Original language	American English
Journal	Advances in Engineering Software
Volume	39
DOIs	https://doi.org/10.1016/j.advengsoft.2008.01.009
State	Published - Dec 1 2008

Keywords

Finite element method; Object-oriented programming; Cyclic loading; Crack propagation; Multi-layered structures; Fatigue; ABAQUS

Disciplines

Computer-Aided Engineering and Design
Mechanical Engineering

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10.1016/j.advengsoft.2008.01.009License: CC BY

An Object-Oriented Approach for Modeling and Simulation of CrackFinal published version, 3.03 MBLicense: CC BY

http://journals.ohiolink.edu/ejc/article.cgi?issn=09659978&issue=v39i0012&article=995_aoafmacgicls

Cite this

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title = "An Object-Oriented Approach for Modeling and Simulation of Crack Growth in Cyclically Loaded Structures",

abstract = " We present an object-oriented modeling frame for simulating crack propagation due to cyclic loadings. Central to the approach is that the crack propagates when a user-defined propagation criterion is fulfilled, i.e., the crack propagation rate is not prescribed but predicted. The approach utilizes the commercial finite element software package ABAQUS and its associated Python based scripting interface. The crack propagation is simulated by a generalized node release technique. If the propagation criteria are satisfied in the end of a cycle, the crack is allowed to propagate. The incremental crack growth is inferred from an iterative investigation of the propagation criteria. The propagation criteria are user-defined, and can be based on any parameter or parameter set that can be obtained from the simulations. We illustrate the developed modeling frame by two benchmark problems, where the propagation criterion is based on the dissipated energy in the vicinity of the crack tip.",

keywords = "Finite element method; Object-oriented programming; Cyclic loading; Crack propagation; Multi-layered structures; Fatigue; ABAQUS",

author = "D. Cojocaru and Karlsson, \{Anette M\}",

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N1 - Cojocaru, D., and Karlsson, A. M., 2008, "An Object-Oriented Approach for Modeling and Simulation of Crack Growth in Cyclically Loaded Structures," Advances in Engineering Software, 39(12) pp. 995-1009.

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N2 - We present an object-oriented modeling frame for simulating crack propagation due to cyclic loadings. Central to the approach is that the crack propagates when a user-defined propagation criterion is fulfilled, i.e., the crack propagation rate is not prescribed but predicted. The approach utilizes the commercial finite element software package ABAQUS and its associated Python based scripting interface. The crack propagation is simulated by a generalized node release technique. If the propagation criteria are satisfied in the end of a cycle, the crack is allowed to propagate. The incremental crack growth is inferred from an iterative investigation of the propagation criteria. The propagation criteria are user-defined, and can be based on any parameter or parameter set that can be obtained from the simulations. We illustrate the developed modeling frame by two benchmark problems, where the propagation criterion is based on the dissipated energy in the vicinity of the crack tip.

AB - We present an object-oriented modeling frame for simulating crack propagation due to cyclic loadings. Central to the approach is that the crack propagates when a user-defined propagation criterion is fulfilled, i.e., the crack propagation rate is not prescribed but predicted. The approach utilizes the commercial finite element software package ABAQUS and its associated Python based scripting interface. The crack propagation is simulated by a generalized node release technique. If the propagation criteria are satisfied in the end of a cycle, the crack is allowed to propagate. The incremental crack growth is inferred from an iterative investigation of the propagation criteria. The propagation criteria are user-defined, and can be based on any parameter or parameter set that can be obtained from the simulations. We illustrate the developed modeling frame by two benchmark problems, where the propagation criterion is based on the dissipated energy in the vicinity of the crack tip.

KW - Finite element method; Object-oriented programming; Cyclic loading; Crack propagation; Multi-layered structures; Fatigue; ABAQUS

UR - https://engagedscholarship.csuohio.edu/enme_facpub/149

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DO - 10.1016/j.advengsoft.2008.01.009

M3 - Article

VL - 39

JO - Advances in Engineering Software

JF - Advances in Engineering Software

ER -

An Object-Oriented Approach for Modeling and Simulation of Crack Growth in Cyclically Loaded Structures

Abstract

Keywords

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