Numerical evaluation for debonding failure phenomenon of adhesively bonded joints at cryogenic temperatures |
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Authors: | Chi-Seung LeeMin-Sung Chun Myung-Hyun KimJae-Myung Lee |
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Affiliation: | a Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan 609-735, Republic of Korea b Samsung Heavy Industries Co., Ltd., Geoje 656-710, Republic of Korea |
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Abstract: | In the present study, material characteristics, such as inelastic constitutive behaviour and debonding failure, of an adhesively bonded joint (ABJ) at cryogenic temperature have been evaluated using a computational approach. The modified Bodner-Partom model (BP model) has been introduced to describe the material nonlinearities of ABJ. The Gurson-Tvergaard model (GT model) has also been implemented into the constitutive model in order to analyse the phenomenon of debonding failure. An ABAQUS user-defined subroutine UMAT is developed using a damage-coupled constitutive model based on an implicit formulation. The numerical results are compared with a series of lap shear tests of ABJ at cryogenic temperature in order to verify the proposed method. |
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Keywords: | A. Adhesive joints B. Debonding B. Non-linear behaviour C. Damage mechanics C. Finite element analysis (FEA) |
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