Harvey_Manuscript for Repository.pdf (794.47 kB)
Delamination propagation under high loading rate
journal contribution
posted on 2020-08-14, 13:21 authored by Tianyu Chen, Christopher HarveyChristopher Harvey, Simon WangSimon Wang, Vadim SilberschmidtVadim SilberschmidtAnalytical theory for the dynamic delamination behavior of a double cantilever beam (DCB)
under high loading rate is developed. Structural vibration and wave dispersion are considered
in the context of Euler-Bernoulli beam theory. The theory is developed for both initiation and
propagation of delamination in mode I. Two solutions for the energy release rate (ERR) are
given for a stationary delamination: an accurate one and a simplified one. The former is based
on global energy balance, structural vibration and wave dispersion; the latter is ‘local’ since it
is based on the crack-tip bending moment. For the simplified solution to be accurate, sufficient
time is needed to allow the establishment of all the standing waves. For a propagating
delamination, a solution for the ERR is derived using the same simplification with the cracktip bending moment. The obtained ERR solutions are verified against experimental data and
results from finite-element simulations, showing excellent agreement. One valuable
application of the developed theory is to determine a material’s dynamic loading-ratedependent delamination toughness by providing the analytical theory to post-process test
results of dynamic DCB delamination.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
- Mechanical, Electrical and Manufacturing Engineering
Department
- Aeronautical and Automotive Engineering
Published in
Composite StructuresVolume
253Publisher
Elsevier BVVersion
- AM (Accepted Manuscript)
Rights holder
© Elsevier LtdPublisher statement
This paper was accepted for publication in the journal Composite Structures and the definitive published version is available at https://doi.org/10.1016/j.compstruct.2020.112734Acceptance date
2020-07-24Publication date
2020-07-29Copyright date
2020ISSN
0263-8223eISSN
1879-1085Publisher version
Language
- en
Depositor
Dr Christopher Harvey. Deposit date: 11 August 2020Article number
112734Usage metrics
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