Discrete inclusion models for reinforced composites

Comparative performance analysis and modeling challenges

Journal article (2019)

Authors

M. Goudarzi Applied Mechanics - CEG
A. Simone Applied Mechanics - CEG , Università degli Studi di Padova
Research Group
Applied Mechanics (CEG) (TU Delft)
Embedded reinforcement Fiber-reinforced composite Non-smooth slip profile Platelet inclusion
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Published Date

2019

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Applied Mechanics

Abstract

We report the results of a comparative analysis of mesh independent discrete inclusion models and point out some shortcomings of classical approaches in the approximation of the strain field across an inclusion (artificial continuity) and the slip profile along an inclusion (oscillatory behavior). We also present novel embedded reinforcement models based on partition of unity enrichment strategies, adaptive h-refinement, and order/regularity extensions. These novel models are assessed by means of mesh convergence studies and it is shown that they improve the quality of the solution by significantly decreasing local spurious oscillations in the slip profile along an inclusion.