Open Access

ARTICLE

Coupled Digital Image Correlation and Peridynamics for Full-Field Deformation Measurement and Local Damage Prediction

by Tianyi Li, Xin Gu, Qing Zhang, Dong Lei

1 Department of Engineering Mechanics, Hohai University, Nanjing, China.

∗ Corresponding Author: Qing Zhang. Email: .

(This article belongs to the Special Issue: Recent Developments on Peridynamics)

Computer Modeling in Engineering & Sciences 2019, 121(2), 425-444. https://doi.org/10.32604/cmes.2019.06700

Abstract

Digital image correlation (DIC) measurement technique and peridynamics (PD) method have been applied in specific fields extensively owing to their respective advantages in obtaining full-field deformation and local failure of loaded materials and structures. This study provides a simple way to couple DIC measurements with PD simulations, which can circumvent the difficulties of DIC in dealing with discontinuous deformations. Taking the failure analysis of a compact tension specimen of aluminum alloy and a static three-point bending concrete beam as examples, the DIC experimental system firstly measures the full-field displacements, and then the PD simulation is applied on potential damage regions determined according to the correlation coefficients, to track the micro-crack evolution and macro-crack propagation. As results, the coupled DIC and PD approach can effectively measure the full-field displacement and the localized damage accumulation and crack propagation.

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