Digital Repository, ICF12, Ottawa 2009

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On the study of wire cutting of starch gels
C. Gamonpilas, M. Charalambides, J.G. Williams, P.J. Dooling, S.R. Gibbon

Last modified: 2013-05-06


Wire cutting experiments were performed to study the fracture behaviour of starch
gels. The results showed that the fracture toughness increases with cutting speed.
This is consistent with the results obtained from the independent conventional
fracture mechanics test. Finite element simulations of wire cutting process were also
performed. A non-linear elastic constitutive relationship was used to model the starch
gels and frictionless condition was assumed at the wire-starch gel contact interface.
A failure criterion based on critical fracture strain was assumed. Predictions of the
steady-state cutting force at various wire diameters and cutting speeds were found to
be in good agreement with the wire cutting data.

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