
Accession Number : ADA140980
Title : The Dynamic SteadyState Propagation of an AntiPlane Shear Crack in a General Linearly Viscoelastic Layer.
Descriptive Note : Technical rept.,
Corporate Author : TEXAS A AND M UNIV COLLEGE STATION MECHANICS AND MATERIALS RESEARCH CENTER
Personal Author(s) : Walton,J R
PDF Url : ADA140980
Report Date : Feb 1984
Pagination or Media Count : 17
Abstract : In a previous paper, the dynamic, steadystate propagation of an semiinfinite antiplane shear crack was considered for an infinite, general linearly viscoelastic body. Under the assumptions that the shear modulus is a positive, nonincreasing continuous and convex function of time, convenient, closedfrom expressions were derived for the stress intensity factor and for the entire stress distribution ahead of and in the plane of the advancing crack. The solution was shown to have a simple universal dependence upon the shear modulus and crack speed from which qualitative information can readily be gleaned. Here, the corresponding problem for a general, linearly viscoelastic layer is solved. An infinite series representation for the stress intensity factor is derived, each term of which can be calculated recursively in closedform. As before, a simple universal dependence upon crack speed and material properties is exhibited. (Author)
Descriptors : *Crack propagation, *Shear properties, *Equations of motion, *Viscoelasticity, Layers, Steady state, Fourier transformation, Stress concentration, Linearity, Boundary value problems
Subject Categories : Numerical Mathematics
Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE