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

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...

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Bibliographic Details
Published inInternational journal of solids and structures Vol. 155; pp. 185 - 200
Main Authors Thorsson, Solver I., Waas, Anthony M., Rassaian, Mostafa
Format Journal Article
LanguageEnglish
Published New York Elsevier Ltd 15.12.2018
Elsevier BV
Subjects
Computer simulation
Cracking (fracturing)
Delamination
Failure mechanisms
Fiber composites
Fiber reinforced plastics
Fiber reinforced polymer matrix composites
Fiber reinforced polymers
Finite element analysis
Finite element method
Fracture mechanics
Impact damage
Impact prediction
Impact response
Inspection
Laminates
Linearity
Low velocity impact
Mathematical analysis
Mathematical models
Modelling
Nondestructive testing
Polymer matrix composites
Subroutines
Velocity
Finite element analysis
Fiber reinforced polymer matrix composites
Delamination
Low velocity impact
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Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0020-7683
1879-2146
DOI:10.1016/j.ijsolstr.2018.07.020