Results 251 to 260 of about 181,401 (307)

Dynamic stability of a propagating crack

Journal of the Mechanics and Physics of Solids, 2002
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Obrezanova, O., Movchan, A. B., Willis, J. R.   +2 more
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The Propagation of Fatigue Cracks

Journal of Applied Mechanics, 1956
Abstract A theory of the rate of growth of fatigue cracks is extended to the case of large stresses. Recent measurements of McClintock and Ryan are discussed.
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AUTOMATIC CRACK PROPAGATION TRACKING

Computers & Structures, 1985
A finite element based approach to fully automatic crack propagation tracking is presented. The procedure presented combines fully automatic mesh generation with linear fracture mechanics techniques in a geometrically based finite element code capable of automatically tracking cracks in two-dimensional domains.
Mark S. Shephard, Nabil A.B. Yehia, Gary S. Burd, Theodore J. Weidner   +3 more
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Fatigue crack propagation. Report 2. A crack propagation model

Strength of Materials, 1988
1. A model of fatigue crack propagation was proposed; the model is based on determining the specific energy of inelastic strain cumulated at the distance X* from the crack tip, with an allowance made for the energy irreversibly scattered within the scope of the zone of damageRm (Rm≥X*). 2.
V. T. Troshchenko, P. V. Yasnii, V. V. Pokrovskii   +2 more
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Fatigue Crack Propagation of Short Cracks

Journal of Engineering Materials and Technology, 1979
Previous studies have shown that both threshold stress intensity factors and fatigue crack growth rates are dependent on crack size. The average growth rates for very short cracks considerably exceed those given by conventional stress intensity-crack growth laws fitted to long crack data.
M. H. El Haddad, K. N. Smith, T. H. Topper   +2 more
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Crack Propagation in Finite Elastodynamics

Mathematics and Mechanics of Solids, 2005
Within the framework of finite elastodynamics, a crack propagation analysis, for sheets of compressible hyperelastic material, is formulated. By exploiting a dynamic generalization of the Stephenson's result, general far-field loading conditions are considered.
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Dynamic instability in crack propagation

Physical Review E, 1994
A linear stability analysis of the steady state solutions to a model for propagating cracks implies dynamic instability beyond a critical crack speed, oscillatory behavior of the crack tip velocity, and the emergence of spatial structure. The results are in qualitative agreement with experiment.
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A Diffraction Problem and Crack Propagation

Journal of Applied Mechanics, 1967
The exact solution to the problem of diffraction of plane harmonic polarized shear waves by a half-plane crack extending under antiplane strain is constructed. The solution is employed to study the nature of the stress field associated with an extending crack in an elastic medium excited by stress waves.
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Crack propagation in graphene

Journal of Applied Physics, 2015
The crack initiation and growth mechanisms in an 2D graphene lattice structure are studied based on molecular dynamics simulations. Crack growth in an initial edge crack model in the arm-chair and the zig-zag lattice configurations of graphene are considered. Influence of the time steps on the post yielding behaviour of graphene is studied.
P. R. Budarapu, B. Javvaji, V. K. Sutrakar, D. Roy Mahapatra, G. Zi, T. Rabczuk   +5 more
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Micromechanisms of Crack Initiation and Crack Propagation

1985
After summarizing fracture mechanics parameters the paper introduces micromechanical models of cleavage fracture. It is shown that cleavage can be interpreted in terms of the local tensile stress required to propagate micro-cracks. Methods to determine the microscopic cleavage stress are presented.
W. Dahl, D. Dormagen
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