Numerical Modelling of the Change in Stiffness Properties of Cross-Ply Laminates Subjected to Large Bending Curvatures

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Abstract:

This paper presents a 3D unit-cell approach which enables the estimation of bending, inplaneand coupling stiffness properties in the sense of the classical laminated plate theory for arbitrarilyheterogeneous plates. Periodic boundary conditions which simultaneously allow for in-plane as wellas for bending and twist deformation modes are introduced. Additionally, bending experiments of glassfibre/epoxy cross-ply laminates with cracked outer layer at the tension side are conducted and the stiffnessdegradation due to these transverse cracks is compared to numerical results.

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Periodical:

Key Engineering Materials (Volumes 577-578)

Pages:

173-176

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Online since:

September 2013

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