Minimum-Weight Sandwich Structure Optimum Design Subjected to Torsional Loading

Abstract

As one of the most valued structural engineering innovations developed by the composites industry, sandwich structures are now used extensively in automotive, aerospace and civil infrastructure due to the main advantage of lightweight. This paper develops a minimum weight optimization method for sandwich structure subjected to torsion load. The design process are identified for a sandwich structure required to meet the design constraint of torsion stiffness. The optimum solutions show that at optimum design the core weight accounts for 66.7% of the whole sandwich structure. To illustrate the newly developed optimum design solutions, numerical examples are presented for sandwich structures made of either isotropic face skins or orthotropic composite face skins. Agreement between the theoretical analysis and the examples results is good.Keywords Sandwich structure . Lightweight . Torsion stiffness . Optimum design Nomenclature t f thickness of facing skins (assuming that both facing skins are same) E f elastic (Young's) modulus of facing material(assuming that both facing skins are same) l length of the sandwich plate

Optimisation of Composite Sandwich Structures Subjected to Combined Torsion and Bending Stiffness Requirements

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Optimum Design of Composite Sandwich Structures Subjected to Combined Torsion and Bending Loads

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