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Crack growth laws for a variety of viscoelastic solids using energy and COD fracture criteria

✍ Scribed by L. N. Cartney

Publisher: Springer Netherlands
Year: 1979
Tongue: English
Weight: 471 KB
Volume: 15
Category: Article
ISSN: 1573-2673
DOI: 10.1007/bf00115906

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✦ Synopsis

An energy balance fracture criterion and a constant crack opening displacement criterion are extensively discussed and rationalized in connection with the prediction of crack growth rates in linear viscoelastic materials. It is shown that both approaches lead to the same crack growth law when~small scale yielding conditions prevail and when the applied stress is constant during propagation. Based upon an approach already appearing in the literature an analysis is presented deriving crack growth laws which are valid for quite general creep functions. The standard linear solid and generalized power law materials are discussed. Growth laws, valid for both small and large scale yielding, are derived for Maxwell solids using the above two fracture criteria.

📜 SIMILAR VOLUMES

Discussion: “Crack growth laws for a var

Discussion: “Crack growth laws for a variety of viscoelastic solids using energy and COD fracture criteria,”

✍ W. G. Knauss 📂 Article 📅 1979 🏛 Springer Netherlands 🌐 English ⚖ 200 KB

This paper, and two preceding it [1,2] all address the propagation of cracks in (linearly) viscoelastic solids. Because they contain several conditions regarding material representation and crack geometry that seem unnecessarily restrictive, it appears appropriate to discuss the major results of th

Response: Discussion of “Crack growth la

Response: Discussion of “Crack growth laws for a variety of visco-elastic solids using energy and COD fracture criteria,”

✍ L. N. McCartney 📂 Article 📅 1980 🏛 Springer Netherlands 🌐 English ⚖ 191 KB

Derivation of crack growth laws for line

Derivation of crack growth laws for linear viscoelastic solids based upon the concept of a fracture process zone

✍ L. N. McCartney 📂 Article 📅 1980 🏛 Springer Netherlands 🌐 English ⚖ 347 KB

The analysis presented in this paper derives, for a centre-crack embedded in a linear viscoelastic medium, crack growth equations which are based upon a modified energy balance relation. In contrast to an earlier approach a fracture process zone is introduced in the neighbourhood of the crack tip. I