Code development for the computational analysis of crack propagation in structures

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Published Jul 19, 2020
DOI https://doi.org/10.3221/IGF-ESIS.53.24

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Antonios Chatzigeorgiou
School of Applied Mathematical and Physical Sciences, Dept. of Mechanics-Lab. of Testing and Materials, National Technical University of Athens, 5, Heroes of Polytechnion Avenue, Theocaris Bld., Zografou Campus, GR-157 73, Athens, Greece.
Efstathios Theotokoglou
School of Applied Mathematical and Physical Sciences, Dept. of Mechanics-Lab. of Testing and Materials, National Technical University of Athens, 5, Heroes of Polytechnion Avenue, Theocaris Bld., Zografou Campus, GR-157 73, Athens, Greece
George I. Tsamasphyros
School of Applied Mathematical and Physical Sciences, Dept. of Mechanics-Lab. of Testing and Materials, National Technical University of Athens, 5, Heroes of Polytechnion Avenue, Theocaris Bld., Zografou Campus, GR-157 73, Athens, Greece.

Abstract

In this study, the main objective was the creation of a code, which gives the capability to a Finite Element Analysis Program with no built-in crack study tools, to study the propagation of a crack, in a cracked surface. For this purpose, the Finite Element Program FEMAP 11.3.2 with solver the NX NASTRAN has been used, and the proposed code was created, using the Application Program Interface (API) of the program. The Linear Elastic Fracture Mechanics (LEFM) theory has been applied to the code, and can predict, if the crack will propagate, the trajectory of the crack, as well as the number of cycle loads required for the propagation of the crack, for given boundary conditions and loads. Finally, the Stress Intensity Factors (SIF) produced by the program, were compared with results from analytical method. Also, experimental results have been used, for the verification of the results of the trajectory of the propagation, and the cycle loads.


           

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    Issue
    Vol. 14 No. 53 (2020): July 2020
    Section
    Structural Integrity and Durability of Structures

    How to Cite

    Chatzigeorgiou, A., Theotokoglou, E. and Tsamasphyros, G. I. (2020) “Code development for the computational analysis of crack propagation in structures”, Frattura ed Integrità Strutturale, 14(53), pp. 306–324. doi: 10.3221/IGF-ESIS.53.24.
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