Analysis of the Strain Field in a Twisted Sandwich Panel with Application to Determining the Shear Stiffness of Corrugated Fibreboard

Abstract

Accurate measurement of the shear stiffness of corrugated fibreboard and other high performance sandwich panels is difficult because most loading strategies required to introduce shear stresses also introduce secondary effects, which complicate the measurement.

This paper analysis the strain field introduced by twisting a strip of material and demonstrates a simple relationship for accurately determining the shear stiffness of corrugated fibreboard and other high performance sandwich panels.