Results 251 to 260 of about 73,733 (293)

Crack-tip fields in a viscoplastic material

International Journal of Solids and Structures, 1987
An integral representation for the particle velocity in terms of a Green function and certain linear combinations of the inelastic strain rates has been used in this paper, both for a numerical method to compute full field solutions and to develop unequivocal asymptotic expressions for the fields near a stationary crack tip.
Achenbach, J. D., Nishimura, N., Sung, J. C.   +2 more
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Small-scale yielding interfacial crack-tip fields

Journal of the Mechanics and Physics of Solids, 1992
By idealizing the crack surroundings as an isotropic elastic perfectly-plastic material with tensile yield strength σ bonded to a rigid or isotropic elastic substrate, the small-scale yielding (SSY) plane strain asymptotic lields for “elastically” traction-free interfacial cracks are numerically calculated.
E. Zywicz, D.M. Parks
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Crack tip field in piezoelectric/piezomagnetic media

European Journal of Mechanics - A/Solids, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Baolin (R17839), Mai, Yiuwing
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Transient near tip fields in crack dynamics

Science China Physics, Mechanics and Astronomy, 2011
Transient effects of stress-strain fields in the vicinity of a stationary crack tip under high rate loads are discussed. Exact analytical solutions to near tip stresses are compared to fields prescribed by leading terms (one or several) of Williams asymptotic expansion.
Vladimir Bratov, Yuri Petrov, Alexander Utkin   +2 more
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Crack-Tip Field of a Supersonic Bimaterial Interface Crack

Journal of Applied Mechanics, 2002
The sextic approach was used to investigate the asymptotic field of a bimaterial interface crack in the entire supersonic regime and extended to include the combination of isotropic and homogeneous materials, where the sextic method had been considered difficult. Application to typical systems was demonstrated.
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Plastic near-tip fields for branched cracks

International Journal of Fracture, 1986
A procedure is outlined whereby the plastic near-tip stress and deformation fields for branched cracks are determined under plane strain and small scale yielding conditions. This method utilizes the known elastic stress intensity factor solutions and the universal mixed-mode plastic near-tip fields to determine the stress and deformation conditions at ...
S. Suresh, C. F. Shih
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Elastic Plastic Fracture: Crack Tip Fields

2012
The crack tip stress and strain fields for stationary and growting cracks in elastic-plastic materials are calculated here and the results used to gain insight into ductile fracture criteria such as the R-curve. The size of the plastic zone ahead of the crack is estimated using several models.
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A transverse crack tip field in bimaterial

Acta Mechanica Sinica, 1994
The asymptotic field near an interface crack tip is analyzed with the fully nonlinear theory. By dividing the crack tip field into narrowing sectors and an expanding sector, the asymptotic equations for the crack tip field are derived and solved. The singular characters of stress and strain near the crack tip are revealed.
Du Shanyi, Shi Zhifei, Wu Linzhi
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The elastic crack-tip stress field

1982
Consider a coordinate system X, Y, Z in a stressed solid. In each point (x, y, z) one can define the stresses σ x , σ y , σ z , τ xy , τ xz , τ yz . In a condition of plane stress σ z = τ xz = τ yz = 0. In a condition of plane strain e z = 0 from which it follows that σ z = v(σ x + σ y ).
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Stress Field Around a Rounded Crack Tip

Journal of Applied Mechanics, 1991
A method based on the eigenfunction (Williams stress functions) expansion is developed to examine the stress distribution around the tip region of a macrocrack which has some specific micro configuration. In particular, a macrocrack running into a micro hole under mode I condition is analyzed in detail.
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