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Journal Articles Journal of the Mechanics and Physics of Solids Year : 2017

Virtual hybrid test control of sinuous crack

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Abstract

The present study aims at proposing a new generation of experimental protocol for analysing crack propagation in quasi brittle materials. The boundary conditions are controlled in real-time to conform to a predefined crack path. Servo-control is achieved through a full-field measurement technique to determine the pre-set fracture path and a simple predictor model based on linear elastic fracture mechanics to prescribe the boundary conditions on the fly so that the actual crack path follows at best the predefined trajec-tory. The final goal is to identify, for instance, non-local damage models involving internal lengths. The validation of this novel procedure is performed via a virtual test-case based on an enriched damage model with an internal length scale, a prior chosen sinusoidal crack path and a concrete sample. Notwithstanding the fact that the predictor model selected for monitoring the test is a highly simplified picture of the targeted constitutive law, the proposed protocol exhibits a much improved sensitivity to the sought parameters such as internal lengths as assessed from the comparison with other available experimental tests.
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Dates and versions

hal-01549224 , version 1 (28-06-2017)

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Clément Jailin, Andreea Carpiuc, Kyrylo Kazymyrenko, Martin Poncelet, Hugo Leclerc, et al.. Virtual hybrid test control of sinuous crack. Journal of the Mechanics and Physics of Solids, 2017, 102, pp.239 - 256. ⟨10.1016/j.jmps.2017.03.001⟩. ⟨hal-01549224⟩
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