Characterisation of fracture behaviour of starch gels using conventional fracture mechanics and wire cutting tests

被引：0

作者：

Gamonpilas, C. ^{[1
]}

Charalambides, M. N. ^{[1
]}

Williams, J. G. ^{[1
]}

Dooling, P. J. ^{[2
]}

Gibbon, S. R. ^{[2
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Mech Engn, London SW7 2AZ, England

[2] Wilton Ctr, ICI Appl Res, Redcar TS10 4RF, England

来源：

XVTH INTERNATIONAL CONGRESS ON RHEOLOGY - THE SOCIETY OF RHEOLOGY 80TH ANNUAL MEETING, PTS 1 AND 2 | 2008年 / 1027卷

关键词：

starch gels; fracture toughness; wire cutting; finite element analysis;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The fracture behaviour of starch gels is investigated through experimental tests and finite element simulations. Both conventional fracture and wire cutting experiments were performed. The results from these two tests were consistent with the fracture toughness increasing with loading rate. In the FE analysis, a non-linear elastic constitutive relationship was used to model the starch gels and frictionless condition was assumed between 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 were found to be in good agreement with the wire cutting data.

引用

页码：1232 / +

页数：2

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