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Thermal shock
cracking in thin plate specimens using a gradient damage
model
Marwa Dhahri, Radhi Abdelmoula, Jia Li and Yamen Maalej |
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Vol. 18 (2023), No. 1, 19–38
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Abstract |
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We present a numerical model to simulate the damage and fracture process occurred in ceramic materials under thermal shock conditions. In particular, the variational principle is applied to gradient damage analysis in the establishment of the numerical model. The experiments on quenching tests of circular specimens are used to validate the efficiency of the model, proving that the proposed model is capable of reproducing faithfully the entire damage-fracture process of the ceramic specimens. Moreover, influences of different physical parameters are examined and discussed. We find that an internal length scale parameter, which can be considered as a material parameter, plays an important role in the entire fracture process. |
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Keywords
thermal shock, brittle fracture and gradient damage model,
numerical simulations
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Milestones
Received: 8 October 2021
Revised: 17 February 2022
Accepted: 21 February 2022
Published: 24 March 2023
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Authors |
| Marwa Dhahri | |
| Laboratory of Process and Material
Sciences, CNRS-UPR 3407 University of Sorbonne Paris Nord Villetaneuse France |
Laboratory of Applied Mechanics and
Engineering University of Tunis El Manar Tunis Tunisia |
| Radhi Abdelmoula | |
| Laboratory of Process and Material
Sciences, CNRS-UPR 3407 University of Sorbonne Paris Nord Villetaneuse France |
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| Jia Li | |
| Laboratory of Process and Material
Sciences, CNRS-UPR 3407 University of Sorbonne Paris Nord Villetaneuse France |
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| Yamen Maalej | |
| Laboratory of Applied Mechanics and
Engineering University of Tunis El Manar Tunis Tunisia |
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| © 2023 MSP (Mathematical Sciences Publishers). |
