In the present paper, formulas for the velocity of Rayleigh waves in incompressible isotropic solids subject to a general pure homogeneous prestrain are derived using the theory of cubic equation. They have simple algebraic form and hold for a general strain-energy function. The formulas are concretized for some specific forms of strain-energy function. They then become totally explicit in terms of parameters characterizing the material and the prestrains. These formulas recover the (exact) value of the dimensionless speed of Rayleigh wave in incompressible isotropic elastic materials (without prestrain). Interestingly that, for the case of hydrostatic stress, the formula for the Rayleigh wave velocity does not depend on the type of strain-energy function.

Issue Section:
Research Papers
Keywords:
elasticity, Rayleigh waves, Rayleigh waves, Rayleigh wave velocity, prestrains, prestresses, incompressible
Topics:
Rayleigh waves, Solids
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 by American Society of Mechanical Engineers
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