Mixed mode delamination of asymmetric beam-like geometries with cohesive stresses

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:155

Article

Maimi, P.¹  Gascons, N.¹  Ripoll, L.¹  Llobet, J.¹ 

[1] Univ Girona, Mech Engn & Ind Construct Dept, AMADE, Campus Montilivi S-N, Girona 17003, Spain

关键词: Bimaterial;    Delamination;    Fracture toughness;    Mixed mode fracture;   

DOI  :  10.1016/j.ijsolstr.2018.06.032

来源: Elsevier

【 摘 要 】

The partition of the energy release rate of beam-like geometries is analyzed here. Several methods for partitioning mode I and II energy release rates are presented and critically compared. A Timoshenko beam theory with Dugdale cohesive stress is applied and results show a mixed mode energy release rate dependence on the interface fracture toughness. A geometry is proposed that eliminates this dependence, offering a method to characterize the fracture properties of interfaces between dissimilar materials. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

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