Minimum Weight Design of Orthotropic Sandwich Panels Loaded in Compression and Shear,
Abstract
The purpose of the report is the determination of the minimum weight configuration of rectangular orthotropic sandwich panels with fibre-reinforced plastic faces designed to meet specified requirements with regard to strength, stability, in-plane stiffness and minimum feasible thicknesses of core and faces. The design specifications are assumed to comprise an arbitrary number of different states of loading acting successively on the panel. Each state of loading may consist of either unixial compression or tension, pure shear or a combination of such loads. In order to investigate the weight-efficiency of different reinforcing materials, optimum configurations are numerically determined for long sandwich panels with simply supported edges and with faces reinforced by bidirectional glass-fibre fabric, unwoven E-glass fibres and boron fibres. The weight of such panels is compared with that of panels having faces of aluminium for the purpose of studying the advantages or disadvantages of aluminium and fibre-reinforced plastics as design materials in the light of different design requirements. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1971
- Accession Number
- AD0732037
Entities
People
- Lars Holsteinson
- Peter Stehlin
Organizations
- National Aeronautical Research Institute