Non-local and local criteria based on the extended finite element method (XFEM) for fracture simulation of anisotropic 3D-printed polymeric components
ISSN: 1355-2546
Article publication date: 29 May 2023
Issue publication date: 10 August 2023
Abstract
Purpose
The purpose of this study is to develop an efficient numerical procedure for simulating the effect of printing orientation, as one of the primary sources of anisotropy in 3D-printed components, on their fracture properties.
Design/methodology/approach
The extended finite element method and the cohesive zone model (XFEM-CZM) are used to develop subroutines for fracture simulation. The ability of two prevalent models, i.e. the continuous-varying fracture properties (CVF) model and the weak plane model (WPM), and a combination of both models (WPM-CVF) are evaluated to capture fracture behavior of the additively manufactured samples. These models are based on the non-local and local forms of the anisotropic maximum tangential stress criterion. The numerical models are assessed by comparing their results with experimental outcomes of 16 different configurations of polycarbonate samples printed using the material extrusion technique.
Findings
The results demonstrate that the CVF exaggerates the level of anisotropy, and the WPM cannot detect the mild anisotropy of 3D-printed parts, while the WPM-CVF produces the best results. Additionally, the non-local scheme outperforms the local approach in terms of finite element analysis performance, such as mesh dependency, robustness, etc.
Originality/value
This paper provides a method for modeling anisotropic fracture in 3D-printed objects. A new damage model based on a combination of two prevalent models is offered. Moreover, the developed subroutines for implementing the non-local anisotropic fracture criterion enable a reliable crack propagation simulation in media with varying degrees of complication, such as anisotropy.
Keywords
Acknowledgements
The authors would like to express their gratitude to Dr Emilio Martinez Epaneda for his valuable contribution.
Author contributions: Conceptualization, methodology, project administration, formal analysis, validation, visualization, editing manuscript draft: B.B. Conceptualization, investigation, resources, software, validation, visualization, writing – original draft: M.R.M. Formal analysis, validation, visualization, supervision, editing manuscript draft: S.S.R.K., M.R.A.
Conflict of interest: The authors declare no conflict of interest.
Citation
Bahrami, B., Mehraban, M.R., Koloor, S.S.R. and Ayatollahi, M.R. (2023), "Non-local and local criteria based on the extended finite element method (XFEM) for fracture simulation of anisotropic 3D-printed polymeric components", Rapid Prototyping Journal, Vol. 29 No. 8, pp. 1742-1756. https://doi.org/10.1108/RPJ-12-2022-0431
Publisher
:Emerald Publishing Limited
Copyright © 2023, Emerald Publishing Limited