Novel shear deformation model for moderately thick and deep laminated composite conoidal shell

• Abhay Kumar Chaubeya ^[1] ; Ajay Kumara ^[1] ; Anupam Chakrabart ^[2]
  1. [1] NIT Patna
  2. [2] IIT Roorkee
• Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 46, Nº. 5, 2018, págs. 649-668
• Idioma: inglés
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• Resumen

  • This article presents a novel mathematical model for moderately thick and deep laminated composite conoidal shell. The zero transverse shear stress at top and bottom of conoidal shell conditions is applied. Novelty in the present formulation is the inclusion of curvature eect in displacement eld and cross curvature eect in strain eld. This present model is suitable for deep and moderately thick conoidal shell. The peculiarity in the conoidal shell is that due to its complex geometry, its peak value of transverse deection is not at its center like other shells. The C1 continuity requirement associated with the present model has been suitably circumvented. A nine-node curved quadratic isoparametric element with seven nodal unknowns per node is used in nite element formulation of the proposed mathematical model. The present model results are compared with experimental, elasticity, and numerical results available in the literature. This is the rst eort to solve the problem of moderately thick and deep laminated composite conoidal shell using parabolic transverse shear strain deformation across the thickness of conoidal shell. Many new numerical problems are solved for the static study of moderately thick and deep laminated composite conoidal shell considering 10 dierent practical boundary conditions, four types of loadings, six dierent hl/hh (minimum rise/maximum rise) ratios, and four dierent laminations