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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Multi-scale dynamic failure analysis of 3D laminated composites using BEM and MCZM

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Author(s):
Rodriguez, R. Q. [1, 2] ; Moura, L. S. [3] ; Galvis, A. F. [3] ; Albuquerque, E. L. [4] ; Tan, C. L. [1] ; Sollero, P. [3]
Total Authors: 6
Affiliation:
[1] Carleton Univ, Dept Mech & Aerosp Engn, Ottawa, ON K1S 5B6 - Canada
[2] Univ Fed Santa Maria, Ctr Technol, BR-97105900 Santa Maria, RS - Brazil
[3] Univ Estadual Campinas, Sch Mech Engn, BR-13083860 Campinas, SP - Brazil
[4] Univ Brasilia, Fac Technol, BR-70910900 Brasilia, DF - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Engineering Analysis with Boundary Elements; v. 104, p. 94-106, JUL 2019.
Web of Science Citations: 0
Abstract

This paper presents a multi-scale approach to analyze failure in laminated composites. First, at the continuum mesoscale, the boundary element method (BEM) is used with the anisotropic 3D fundamental solution based on double Fourier series. The dynamic effects in the continuum media are included owing to the application of high-rate boundary conditions. These effects induced domain integrals in the BEM formulation which are treated via the dual reciprocity method (DRM). After the evaluation of the mechanical behavior, the multi-scale cohesive zone model (MCZM) is employed. The highly fluctuant deformation confined in the matrix at the atomistic scale is homogenized through the Cauchy-Born rule which allows coupling of the coarse and fine scales at the continuum. The constitutive force field at the atomistic scale is evaluated using a specific potential for epoxy materials, taking the advantage offered by the coarse grained model. Finally, failure is deemed to occur when the criterion fitted at the atomistic scale is reached at the mesoscale. Numerical results are presented showing the crack propagation paths for different configurations. (AU)

FAPESP's process: 15/22199-9 - Dynamic 3D thermoelastic multi-scale failure analysis of composites using a fast BEM approach
Grantee:Rene Quispe Rodriguez
Support Opportunities: Scholarships in Brazil - Post-Doctoral