Physically-sound simulation of low-velocity impact on fiber reinforced laminates

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Lopes, CS (Author) Other; Sadaba, S (Author) Other; Gonzalez, C (Author) Other; Llorca, J (Author) Other; Camanho, PP (Author) FEUP

Journal

Title: International Journal of Impact Engineering

Vol. 92

Pages: 3-17

ISSN: 0734-743X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 57 Citations

Scopus - 74 Citations

Other information

Authenticus ID: P-00G-N38

DOI: 10.1016/j.ijimpeng.2015.05.014

Abstract (EN): A high-fidelity virtual tool for the numerical simulation of low-velocity impact damage in unidirectional composite laminates is proposed. A continuum material model for the simulation of intraply damage phenomena is implemented in a numerical scheme as a user subroutine of the commercially available Abaqus finite element package. Delaminations are simulated using of cohesive surfaces. The use of structured meshes, aligned with fiber directions allows the physically-sound simulation of matrix cracks parallel to fiber directions, and their interaction with the development of delaminations. The implementation of element erosion criteria and the application of intraply and interlaminar friction allow for the simulation of fiber splits and their entanglement, which in turn results in permanent indentation in the impacted laminate. It is shown that this simulation strategy gives sound results for impact energies bellow and above the Barely Visible Impact Damage threshold, up to laminate perforation conditions.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15