Analysis of bolted-bonded composite lap joints

E. Oterkus, A. Barut, E. Madenci, D. R. Ambur

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


Bolted, bonded, and hybrid bolted/bonded joints are three-dimensional in nature. Although the finite element method (FEM) is capable of addressing such joint configurations, it requires considerable computer resources, especially in the presence of multiple bolts. The presence of unknown contact regions between the bolts and laminates and the small length scale of the adhesive thickness require a fine mesh to achieve a reliable prediction of the stress field. Therefore, the identification of the critical design parameters and optimization of the joint strength have become a computational challenge with the finite element method. The present study presents a semi-analytical solution method that permits the determination of point-wise variations of displacement and stress components in singlelap bolted/bonded joints of composite laminates under in-plane as well as lateral loading. The derivation of governing equations of equilibrium of the joint is based on the principle of virtual work, where the displacement fields in the laminates are represented by local and global functions that are not required to satisfy the kinematic boundary conditions directly. The representations of the laminate and bolt displacements are based on the Mindlin plate theory and three-dimensional Timoshenko beam theory, respectively. For the adhesive, the displacement field is expressed in terms of those of laminates by using the shear-lag model to approximate both shearing and peeling deformations; hence, no assumed displacements are necessary for the adhesive.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Number of pages27
ISBN (Print)1563478927, 9781563478925
StatePublished - 2007
Event48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference - Waikiki, HI, United States
Duration: Apr 23 2007Apr 26 2007

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508


Other48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Country/TerritoryUnited States
CityWaikiki, HI

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering


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