• A finite element prediction of first ply failure and delamination in composite conoidal shells using geometric nonlinearity

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      First ply failure; delamination; finite element formulation; conoidal shell; geometric nonlinearity.

    • Abstract


      A review of the existing literature shows that there is only one research report available on failure of laminated composite conoidal shells using geometrically nonlinear strains. Thus, this paper aims for a detailed study on first ply failure and delamination predictions of laminated composite conoidal shell using von-Karman nonlinearity and first order shear deformation theory. The nonlinear equations are solved by Newton–Raphson iterative method. The failure loads of the shell are furnished for two different boundary conditions and stackingorders of cross and angle-ply laminations. The failure locations on the shell surface and failure modes/tendencies are also reported. This study finds that the SSCC boundary and 0°/90°/0° lamination should be selected by practicing engineers to achieve the maximum load carrying capacity of the conoid out of the two edge conditions considered here. Factor of safety values applicable on the failure loads are also suggested keeping due weightage to serviceability criterion.

    • Author Affiliations



      1. Discipline of Civil Engineering, Indian Institute of Technology Indore, Indore 452020, India
      2. Department of Civil Engineering, Jadavpur University, Kolkata 700032, India
    • Dates

  • Sadhana | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.