Transient dynamic stress intensity factors around three stacked parallel cracks in an infinite medium during passage of an impact normal stress. (1st January 2016)

• Record Type: Journal Article
• Authors: Itou, Shouetsu
• Is Part Of: International journal of solids and structures. Volume 78/79(2016)
• Page Start: 199
• Page End: 204
• Publication Date: 2016-01-01
• Subjects: Three stacked cracks -- Incident impact stress waves -- Stress intensity factor -- Integral equation -- The Schmidt method; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2015.08.024
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: Transient dynamic stresses around three stacked parallel cracks in an infinite elastic plate are estimated for an incident impact stress wave impinging normal to the cracks. Using Fourier and Laplace transform techniques, the boundary conditions are reduced to six simultaneous integral equations in the Laplace domain. The differences in the displacements inside the cracks are expanded in a series of functions that have zero value outside the cracks. The Schmidt method is used to solve the unknown coefficients in the series such that the conditions inside the cracks are satisfied. The stress intensity factors are defined in the Laplace domain, and these are inverted using the numerical method. The stress intensity factors are calculated numerically for some crack configurations.