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Multiply-creased shell structures

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If you have a question about this talk, please contact Dr Maria Marques de Carvalho.

A thin, initially plane, inextensible sheet can be folded or creased along a general curve to form two concatenated developable surfaces. Theorems of differential geometry can be used to calculate the shape of a curved-line folded sheet by identifying kinematic constraints between the pair of developable surfaces. We revisit two special cases from literature; one in which the fold curve remains planar and the other in which the fold angle is constant, through practical experiments and finite element analysis in order to quantify and validate the effectiveness of analytical approach based on differential geometry. We then utilise differential geometric approach to analyse a basic problem of a circular disc with a single central circular crease and compare to experimental and numerical results. Excellent correlations are obtained.

This talk is part of the Engineering Structures Seminar Series series.

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