comely 发表于 2025-3-25 04:15:53
Three-Dimensional Cracks: An Introduction,istributing strain nuclei (in the form of dislocations or dislocation dipoles). Although the two-dimensional crack models give a good approximation to crack geometries encountered, most defects or cracks existing in engineering materials and structural components are three-dimensional in character.bronchodilator 发表于 2025-3-25 10:56:54
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Concluding Remarks,es. The techniques employed have all been based on an exploitation of the Bueckner principle, so that, to obtain a solution, we need to know the state of stress existing in the absence of the crack, and have a way of generating tractions to restore equilibrium on the free surfaces of the crack. The四指套 发表于 2025-3-25 18:35:04
Three-Dimensional Cracks: An Introduction,ulate the solution to three-dimensional crack problems is an infinitesimal dislocation loop, instead of a straight line dislocation or a dislocation dipole used for two-dimensional and axi-symmetric crack problems, though a close relation between them can be established.FLAG 发表于 2025-3-25 22:40:28
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0925-0042 s are relatively short, and are growing in the neighbourhood of some stress raising feature, causing a relatively steep stress gradient. It is therefore practicable to represent the geometry in an idealised way, so that a precise solution may be obtained. This contrasts with, say, the finite elementtheta-waves 发表于 2025-3-26 05:45:37
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