An extended non-ordinary state-based peridynamics is proposed to investigate the initiation, propagation and coalescence of 3D pre-existing flaws in PMMA specimen subjected to uniaxial compressive loads. The maximum principal stress criterion and twin-shear strength criterion are introduced to the extended non-ordinary state-based peridynamics. A program code is compiled to demonstrate the validity of the extended non-ordinary state-based peridynamics. In the present study, the numerical specimens of PMMA containing different types of three-dimensional pre-existing flaws under uniaxial compression are simulated to prove the ability of the proposed numerical method to model the propagation and coalescence of 3D cracks. The axial stress versus axial strain curves are obtained using the proposed numerical method as well as the ultimate failure mode and crack coalescence process. The present numerical results are in good agreement with the previous experimental data. © 2019 Elsevier Ltd

3D numerical simulation of initiation, propagation and coalescence of cracks using the extended non-ordinary state-based peridynamics / Shou, Y.; Zhou, X.; Berto, Filippo. - In: THEORETICAL AND APPLIED FRACTURE MECHANICS. - ISSN 0167-8442. - 101:(2019), pp. 254-268. [10.1016/j.tafmec.2019.03.006]

3D numerical simulation of initiation, propagation and coalescence of cracks using the extended non-ordinary state-based peridynamics

Berto Filippo
2019

Abstract

An extended non-ordinary state-based peridynamics is proposed to investigate the initiation, propagation and coalescence of 3D pre-existing flaws in PMMA specimen subjected to uniaxial compressive loads. The maximum principal stress criterion and twin-shear strength criterion are introduced to the extended non-ordinary state-based peridynamics. A program code is compiled to demonstrate the validity of the extended non-ordinary state-based peridynamics. In the present study, the numerical specimens of PMMA containing different types of three-dimensional pre-existing flaws under uniaxial compression are simulated to prove the ability of the proposed numerical method to model the propagation and coalescence of 3D cracks. The axial stress versus axial strain curves are obtained using the proposed numerical method as well as the ultimate failure mode and crack coalescence process. The present numerical results are in good agreement with the previous experimental data. © 2019 Elsevier Ltd
3D modeling; Coalescence; Continuum mechanics; Crack propagation; Cracks; Mechanical variables measurement, 3D cracks; Maximum principal stress; Peridynamics; Shear strength criterions; Uniaxial compressive loads, Numerical methods; The extended state-based peridynamics; The initiation and propagation and coalescence of 3D cracks; The maximum principal stress criterion; Twin-shear strength criterion; Uniaxial compressive loads
01 Pubblicazione su rivista::01a Articolo in rivista
3D numerical simulation of initiation, propagation and coalescence of cracks using the extended non-ordinary state-based peridynamics / Shou, Y.; Zhou, X.; Berto, Filippo. - In: THEORETICAL AND APPLIED FRACTURE MECHANICS. - ISSN 0167-8442. - 101:(2019), pp. 254-268. [10.1016/j.tafmec.2019.03.006]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1654444
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