A Lattice Model for Viscoelastic Fracture
作者： L.I. Slepyan , M.V. Ayzenberg-Stepanenko , J.P. Dempsey
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摘要: A plane, periodic, square-cell lattice is considered, consisting of point particles connec- ted by mass-less viscoelastic bonds. Homogeneous and inhomogeneous problems for steady-state semi-infinite crack propagation in an unbounded strip are studied. Expressions the local-to-global energy-release-rate ratios, stresses strains breaking bonds as well opening displacement derived. Comparative results obtained homogeneous materials, elastic lattices materials. The influences viscosity, discrete structure, cell size, width speed on wave/viscous resistances to revealed. Some asymptotic related important case large viscosity (on a scale relative cell) shown. Along with dynamic propagation, theory slow
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