Low-velocity impact predictions of composite laminates using a continuum shell based modeling approach part A: Impact study

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:155

Article

Thorsson, Solver I.¹  Waas, Anthony M.^1,2  Rassaian, Mostafa³ 

[1] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA

[2] Univ Washington, Dept Aeronaut & Astronaut, Seattle, WA 98195 USA

[3] Boeing Co, Seattle, WA 98124 USA

关键词: Fiber reinforced polymer matrix composites;    Low velocity impact;    Delamination;    Finite element analysis;   

DOI  :  10.1016/j.ijsolstr.2018.07.020

来源: Elsevier

【 摘 要 】

This paper introduces a shell based finite element (FE) model for predicting the impact response and dominant failure mechanisms of fiber reinforced polymer matrix composites subject to low-velocity impact. The model utilizes Enhanced Schapery Theory (EST) for capturing the matrix non-linearity due to micro cracking as well as macroscopic intra-lamina failure, that is, matrix cracking and fiber rupture in the 1-2 failure plane of a lamina. Discrete cohesive elements (DCZM) are utilized for capturing the inter lamina failure initiation and propagation. The intra- and inter-lamina damage and failure models are implemented as user subroutines in the commercial finite element solver, ABAQUS Explicit. The model is compared against low-velocity impact experimental data. High fidelity non-destructive inspection (NDI) methods are used to quantify the impact damage for a detailed comparison to the model predictions. The modeling technique shows excellent agreement with experimental results, both for impact response and damage evolution. (C) lsevier Ltd. All rights reserved.

【 授权许可】

Free