Buckling Analysis of Composite Hexagonal Lattice Cylindrical Shell using Smeared Stiffener Model

Authors

  • M. Buragohain Advanced Systems Laboratory, Hyderabad
  • R. Velmurugan Indian Institute of Technology Madras, Chennai

DOI:

https://doi.org/10.14429/dsj.59.1516

Keywords:

Buckling analysis, smeared stiffener model, SSM, lattice patterns, Ritz buckling analysis

Abstract

Hexagonal lattice pattern formed by helical and circumferential ribs is the most common among different possible lattice patterns. An energy-based smeared stiffener model (SSM) is developed to obtain equivalent stiffness coefficients of a composite lattice cylindrical shell with such hexagonal lattice patterns. Using the equivalent stiffness coefficients, Ritz buckling analysis was carried out. Extensive finite element modelling covering different representative sizes have been carried out. SSM is validated by comparing the estimated buckling loads. Variation of material properties of rib unidirectional composites from those of normal unidirectional composites is accounted for in the energy  formulations.
Defence Science Journal, 2009, 59(3), pp.230-238, DOI:http://dx.doi.org/10.14429/dsj.59.1516

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Published

2009-05-01

How to Cite

Buragohain, M., & Velmurugan, R. (2009). Buckling Analysis of Composite Hexagonal Lattice Cylindrical Shell using Smeared Stiffener Model. Defence Science Journal, 59(3), 230–238. https://doi.org/10.14429/dsj.59.1516

Issue

Vol. 59 No. 3

Section

Review Papers

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