New analytical model of expansion of spherical cavity in brittle material based on the concepts of mechanics of compressible porous and powder materials

作者: B.A. Galanov , V.V. Kartuzov , S.M. Ivanov

DOI: 10.1016/J.IJIMPENG.2008.07.016

关键词:

摘要: Abstract In this paper, the concepts of mechanics porous and powder media are applied for development new analytical model expansion spherical cavity in brittle materials. The is based on approach that recognizes existence three regions with different rheology: region comminuted compacted material; pore formation formed by radial cracks; elastically deformed region. Strain–stress state each determined analyzed. Cavity pressure determined. Energy losses elastic deformation, fracture compaction material calculated compared a number ceramic It shown contribution total energy considerable. presented avoids use rheological characteristics difficult to determine uses instead porosity material.

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