Oscillatory fracture paths in thin elastic sheets
نویسندگان
چکیده
We report a novel mode of quasi-static oscillatory crack propagation when a cutting tip of moderately large width is driven through a thin brittle polymer film. Experiments show that the amplitude and wavelength of the oscillatory crack paths scale linearly with the width of the cutting tip over a wide range of length scales but are independent of the width of the sheet and of the cutting speed. We propose a mechanism for this instability, based on the coupling between crack propagation and out-of-plane deformations of the film. To cite this article: B. Roman et al., C. R. Mecanique 331 (2003). 2003 Académie des sciences. Published by Elsevier SAS. All rights reserved.
منابع مشابه
Oscillatory Fracture Paths in Thin Elastic Sheets: When geometry rules the fracture path
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