Analysis of dynamic bending using DIC and virtual fields method

Behrad Koohbor, Addis Kidane, Michael A. Sutton, Xing Zhao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The present work is aimed to analyze the dynamic bending response of a copper specimen. The specimen is impacted in a three point bending configuration using a Hopkinson bar apparatus. The impact force is measured by the use of two piezoelectric load-cells located behind the supports of the three point bending fixture. Dynamic deformation response of the specimen is studied and analyzed through the use of ultra-high speed photography in conjunction with digital image correlation. To do this, an ultra-high speed HPV-X camera is utilized to capture images of the specimen during deformation time at a frame rate of 106 frames per second. Full-field distributions of in-plane displacement and strain components are studied and used to calculate the strain rate and acceleration distributions in the specimen. An analytical approach based on the Virtual Fields Method (VFM) is then implemented which allows for the calculation of inertia forces developed in the specimen. In addition, the method of virtual fields is used in this work to identify the rate-dependent constitutive response of the material at plastic deformation regime.

Original languageEnglish (US)
Title of host publicationAdvancement of Optical Methods in Experimental Mechanics - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics
EditorsCesar Sciammarella, Luciano Lamberti, Sanichiro Yoshida
PublisherSpringer New York LLC
Pages143-150
Number of pages8
ISBN (Print)9783319415994
DOIs
StatePublished - 2017
Externally publishedYes
EventAnnual Conference on Experimental and Applied Mechanics, 2016 - Orlando, United States
Duration: Jun 6 2016Jun 9 2016

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume3
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

ConferenceAnnual Conference on Experimental and Applied Mechanics, 2016
Country/TerritoryUnited States
CityOrlando
Period6/6/166/9/16

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

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