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Journal of Failure Analysis and Prevention

, Volume 18, Issue 2, pp 291–303 | Cite as

Finite Element Analysis of the Void Growth and Interface Failure of Ductile Adhesive Joints

  • P. F. Liu
  • Z. H. Hu
  • S. B. Wang
  • W. S. Liu
Technical Article---Peer-Reviewed
  • 178 Downloads

Abstract

Progressive failure of ductile porous adhesive joint generally includes two competitive failure modes: the void growth of ductile adhesive layer and the interface debonding between the adhesive layer and bonding plates. The damage evolution behavior and ultimate strength of ductile adhesive joint are largely dominated by their evolving interactions. However, most of the existing research failed to predict the damage evolution of these two failure modes simultaneously. After the variational weak form of dynamic equilibrium for two adhesive solids with a finite-thickness adhesive layer and two discontinuous cohesive interfaces is given, this paper studies theoretically the competition between these two failure modes using explicit finite element analysis (FEA). The finite-deformation Gurson–Tvergaard–Needleman (GTN) model is used to predict the void growth of adhesive layer, and the bilinear cohesive model as a ABAQUS module is used to simulate the interface debonding. For single-lap joint under tensile loads, effects of the cohesive strengths, the initial void volume fraction, and the thickness of adhesive layer on their interactions are explored. Besides, the ultimate strengths by FEA are also compared with analytical solutions. Numerical results show that dominating failure mode changes from the interface debonding to the failure of adhesive layer at about the cohesive strength 40 MPa and the thickness of adhesive layer 0.5 mm for FM-73 ductile adhesive joint.

Keywords

Void growth Interface failure Ductile adhesive joint Finite element analysis (FEA) 

Notes

Acknowledgments

Prof. Pengfei Liu would sincerely like to thank the support of the Project of Key Laboratory for Design and Manufacturing of Offshore Wind Power Blade of Jiangsu Province, the National Key Fundamental Research and Development Project of China (No. 2015CB057603), the Open Project of State Key Laboratory of Mechanics and Control of Mechanical Structures of Nanjing University of Aeronautics and Astronautics of China (No. MCMS-0216G01), and the Open Project of State Key Laboratory for Strength and Vibration of Mechanical Structures of Xi’an Jiaotong University of China (No. SV2015-KF-09).

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Copyright information

© ASM International 2018

Authors and Affiliations

  • P. F. Liu
    • 1
    • 2
    • 3
    • 4
  • Z. H. Hu
    • 1
  • S. B. Wang
    • 1
  • W. S. Liu
    • 2
  1. 1.Institute of Chemical Machinery and Process Equipment, School of Energy EngineeringZhejiang UniversityHangzhouChina
  2. 2.Key Laboratory for Design and Manufacturing of Offshore Wind Power Blade of Jiangsu ProvinceZhongfulianzhong Composite Group Limited CompanyLianyungangChina
  3. 3.State Key Laboratory of Strength and Vibration of Mechanical StructuresXi’an Jiaotong UniversityXi’anChina
  4. 4.State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjingChina

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