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Evaluating the validity of the cohesive zone model in mixed mode I + III fracture of Al-alloy 2024-T3 adhesive joints using DBM-DCB tests
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Evaluating the validity of the cohesive zone model in mixed mode I + III fracture of Al-alloy 2024-T3 adhesive joints using DBM-DCB tests
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Evaluating the validity of the cohesive zone model in mixed mode I + III fracture of Al-alloy 2024-T3 adhesive joints using DBM-DCB tests
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Journal Article
Evaluating the validity of the cohesive zone model in mixed mode I + III fracture of Al-alloy 2024-T3 adhesive joints using DBM-DCB tests
2023
Overview
Recently, numerous papers have been conducted to study the fracture mechanism of adhesively bonded joints in mixed mode I + II fracture. Nevertheless, the lack of an efficient fixture to capture mixed mode I + III fracture is seen in these studies. The first aim of this paper is representing a fixture that provides pure fracture modes I and III and different combinations of these modes. In the next parts of the paper, this testing configuration has been used to evaluate the accuracy of the cohesive zone modeling (CZM) in predicting the mixed mode I + III fracture at the adhesively bonded structures. A series of fracture tests and finite element simulations have been conducted on the adhesively bonded double cantilever beam specimens using the suggested fixture to determine the cohesive laws of the Araldite 2015 adhesive under mixed mode I + III loading situation. The cohesive laws have been calculated through a direct method from the experimental examinations and implemented in the FEM simulations of the tests. Eventually, the comparison between force-crack opening displacement curves resulting from the experimental tests and the numerical simulations in various combinations of the modes I and III loading states demonstrate the accuracy of the cohesive model in these loading conditions.
Publisher
Springer Netherlands,Springer Nature B.V
Subject
