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Elastic forces that do no work and the dynamics of fast cracks

Fernando Lund
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Abstract

Elastic singularities such as crack tips, when in motion through a medium that is itself vibrating, are subject to forces orthogonal to the direction of motion and thus impossible to determine by energy considerations alone. This fact is used to propose a universal scenario, in which three dimensionality is essential, for the dynamic instability of fast cracks in thin brittle materials.

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Fernando Lund. 1995-07-18. Elastic forces that do no work and the dynamics of fast cracks. https://doi.org/10.1103/physrevlett.76.2742

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