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Experimental Mechanics
Erschienen in: Experimental Mechanics 4/2011

01.04.2011

Ultra High Speed DIC and Virtual Fields Method Analysis of a Three Point Bending Impact Test on an Aluminium Bar

verfasst von: F. Pierron, M. A. Sutton, V. Tiwari

Erschienen in: Experimental Mechanics | Ausgabe 4/2011

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Abstract

This paper deals with the analysis of an aluminium beam impacted in a three point bending configuration using a Hopkinson bar device. Full-field deformation measurements were performed using Digital Image Correlation on images captured with an ultra high speed camera (16 frames at a time resolution of 10 μs). The performance of the deformation and strain measurements were evaluated and the data were then used quantitatively to analyse the very complex dynamic behaviour of the beam. It was shown that the deformation of the beam was controlled by the interaction between the striker and the flexural bending wave triggered by the initial impact. The principle of virtual work was used to reconstruct the impact force from the shear strains and to analyze how this impact force relates to the acceleration of the specimen (inertia forces) and the development of the bending stresses. The results are in good agreement with expectations. This opens up new perspectives in the quantitative use of full-field measurements to extract elasto-plastic constitutive parameters from such impact tests.
Vorheriger Artikel Full-Field Strain Measurement and Identification of Composites Moduli at High Strain Rate with the Virtual Fields Method
Nächster Artikel Grid Method for Microscale Discontinuous Deformation Measurement

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Metadaten
Titel
Ultra High Speed DIC and Virtual Fields Method Analysis of a Three Point Bending Impact Test on an Aluminium Bar
verfasst von
F. Pierron
M. A. Sutton
V. Tiwari
Publikationsdatum
01.04.2011
Verlag
Springer US
Erschienen in
Experimental Mechanics / Ausgabe 4/2011
Print ISSN: 0014-4851
Elektronische ISSN: 1741-2765
DOI
https://doi.org/10.1007/s11340-010-9402-y

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