Abstract
The reflection and refraction of anti-plane shear waves from an interface separating half-spaces with different moduli is well understood in the linear theory of elasticity. Namely, an oblique incident wave gives rise to a reflected wave that departs at the same angle and to a refracted wave that, after transmission through the interface, departs at a possibly different angle. Here we study similar issues for a material that admits mobile elastic phase boundaries in anti-plane shear. We consider an energy minimal equilibrium state in anti-plane shear involving a planar phase boundary that is perturbed due to an incident wave of small magnitude. The phase boundary is allowed to move under this perturbation. As in the linear theory, the perturbation gives rise to a reflected and a refracted wave. The orientation of these waves is independent of the phase boundary motion and determined as in the linear theory. However, the phase boundary motion affects the amplitudes of the departing waves. Perturbation analysis gives these amplitudes for general small phase boundary motion, and also permits the specification of the phase boundary motion on the basis of additional criteria such as a kinetic relation. A standard kinetic relation is studied to quantify the subsequent energy partitioning and dissipation on the basis of the properties of the incident wave.
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Dedicated to Roger Fosdick on the occasion of his 60th birthday.
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© 2000 Springer Science+Business Media Dordrecht
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Pence, T.J., Tsai, H. (2000). Reflection and Refraction of Anti-Plane Shear Waves from a Moving Phase Boundary. In: Carlson, D.E., Chen, YC. (eds) Advances in Continuum Mechanics and Thermodynamics of Material Behavior. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0728-3_16
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DOI: https://doi.org/10.1007/978-94-010-0728-3_16
Publisher Name: Springer, Dordrecht
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