On fracture of viscoelastic bodies

On the basis of a thermodynamic variational principle, a criterion for quasistatic crack growth in a viscoelastic solid is deduced: the change in the sum of the scattering and the rate of decrease of elastic energy equals the increment in surface dissipation. The appropriate invariant contour integr...

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Bibliographic Details
Published in:Journal of applied mathematics and mechanics 1981, Vol.45 (6), p.848-853
Main Author: Nikolaevskii, V.N.
Format: Article
Language:English
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Summary:On the basis of a thermodynamic variational principle, a criterion for quasistatic crack growth in a viscoelastic solid is deduced: the change in the sum of the scattering and the rate of decrease of elastic energy equals the increment in surface dissipation. The appropriate invariant contour integral is found. The theory proposed is suitable for cracks of any shape for any loading path on viscoelastic solids. Examples are considered, including crack growth with localized viscous dissipation.
ISSN:0021-8928
0021-8928
DOI:10.1016/0021-8928(81)90129-5