A Comparison Study On Strength Analysis Of Composite Repair Adhesive Zone By Analytical Methods And Abaqus Cohesive Zone Modelling Techniques

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2019-09-18
Ekren, Mustafa
Kayran, Altan
Prediction of the failure in composite repair is a widely studied subject in the literature due to the increasing importance of analysis over the expensive testing. Interlaminar failure is one of the most common failure modes that occurs in the repair of composite laminates. In early stages, analytical methods were offered to predict the strength of the bonded repair, providing fast and conservative solutions One of the methods is based on shear strain distribution over the bond line of the repair. With the increasing computational capability, several finite element solutions were offered for analyses. Interlaminar failure, delamination in composite structures are commonly performed by the cohesive zone method (CZM). Commercial finite element analysis (FEA) packages are widely used both in industry and academia to predict the failure status in bonding regions. Abaqus finite element program is widely used in the aerospace industry and aerospace researches. In this article, a comparative study is made for failure prediction by analytical method and Abaqus to ascertain the differences that arise. Effect of the bondline thickness was also studied and results were compared for both approaches
Citation Formats
M. Ekren and A. Kayran, “ A Comparison Study On Strength Analysis Of Composite Repair Adhesive Zone By Analytical Methods And Abaqus Cohesive Zone Modelling Techniques,” presented at the 0th ANKARA INTERNATIONAL AEROSPACE CONFERENCE, 18 - 20 Eylül 2019, ss.1-10, Ankara, Türkiye, 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/71139.