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Fracture of a Liquefied Crack and the Physics of Rayleigh Waves

机译:液化裂缝的断裂与瑞利波的物理学

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摘要

The standard free-surface boundary conditions for in-plane crack dynamics are shown to be identical to the conditions for crack dynamics on a liquefied crack. The surfaces of both the free and liquefied cracks do not separate during faulting and hence the static normal stress is not relaxed by the faulting. A crack with either free or liquid boundary conditions deforms in the transverse direction during slip. It follows that both the free and liquefied cracks may represent solutions to the heat-flow paradox. As an application of the proof, we derive a physical understanding of the properties of harmonic Rayleigh waves on a uniform elastic half-space without solving a cubic equation.
机译:平面内裂纹动力学的标准自由表面边界条件显示与液化裂纹的裂纹动力学条件相同。在断裂过程中,自由裂纹和液化裂纹的表面都不会分离,因此,断裂不会放松静态法向应力。具有自由或液体边界条件的裂纹在滑动过程中在横向方向上变形。因此,自由裂纹和液化裂纹均可代表热流悖论的解决方案。作为证明的一种应用,我们可以在不求解三次方程的情况下,对均匀弹性半空间上的谐波瑞利波的性质进行物理理解。

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