File(s) under embargo
Reason: Publisher Requirement
until file(s) become available
Delamination propagation under high loading rate
journal contributionposted on 14.08.2020 by Tianyu Chen, Christopher Harvey, Simon Wang, Vadim Silberschmidt
Any type of content formally published in an academic journal, usually following a peer-review process.
Analytical 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.
Read the paper on the publisher website
- Aeronautical, Automotive, Chemical and Materials Engineering
- Mechanical, Electrical and Manufacturing Engineering
- Aeronautical and Automotive Engineering