Computational analysis of fracture in materials with inclusions is considered as a multidomain problem. Cracks may appear inside the materials or along material interfaces. The computational model introduces two independent damage parameters which enable to represent fracture by mechanical damage. One of the parameters is defined at the interface, considering it as a thin adhesive layer. The interface damage supposes general stressstrain relationships to behave like in cohesive zone models. The other damage parameter defined for the structural domains is based on the theory of phasefield fracture which causes elastic properties degradation only in a narrow material strip that forms a smeared crack. Both these damaging schemes are expressed in a unique quasistatic energy evolution process, the proposed computational approach is thus introduced in a variational form. The solution is approximated by a staggered time stepping procedure related to a separation of deformation variables from damage ones. Both the deformation solution and damage solution at each instant are obtained by nonlinear programming algorithms implemented together within a MATLAB finite element code. The numerical simulation with the model includes a simplified material element with inclusions.
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12 June 2023
ADVANCES IN FRACTURE AND DAMAGE MECHANICS XX
5–7 September 2022
Malaga, Spain
Research Article|
June 12 2023
Applications of a computational approach of interface and phase-field fracture to materials with inclusions
Roman Vodička
Roman Vodička
a)
Technical University of Košice, Faculty of Civil Engineering
, Vysokoškolská 4, 042 00 Košice, Slovakia
a)Corresponding author: [email protected]
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a)Corresponding author: [email protected]
AIP Conf. Proc. 2848, 020035 (2023)
Citation
Roman Vodička; Applications of a computational approach of interface and phase-field fracture to materials with inclusions. AIP Conf. Proc. 12 June 2023; 2848 (1): 020035. https://doi.org/10.1063/5.0145049
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