Accession Number : ADP003114

Title :   Dynamic, Steady-State Crack Propagation in Linear Isotropic Viscoelastic Material,


Personal Author(s) : Walton,J. R.

Report Date : OCT 1983

Pagination or Media Count : 8

Abstract : This paper is a summary of results of some recent analytical studies of dynamic, steady-state crack propagation in linear viscoelastic material. Closed form solutions are presented for the problems of a semi-infinite, anti-plane shear crack propagating with constant speed in an infinite general linear viscoelastic body and in a layer of finite thickness. For both boundary value problems, and for a general class of shear modulus, the solutions obtained exhibit a universal structure that depends in a simple way upon the time dependent shear modulus and crack speed. The forms for the solutions are convenient for the extraction of qualitative and quantitative information about the dependence of the stress field in the body upon the loading, the crack speed and the shear modulus. (Author)

Descriptors :   *Materials, *Viscoelasticity, *Crack propagation, *Steady state, *Mathematical analysis, Equations, Linearity, Isotropism, Velocity, Stress concentration, Layers, Thickness, Modulus of elasticity, Time dependence, Dynamic loads, Fourier transformation, Shear stresses, Strain(Mechanics), Displacement, Quantitative analysis, Structural properties, Symposia

Distribution Statement : APPROVED FOR PUBLIC RELEASE