Stress formulation of acoustoelasticity

Christopher M. Kube, Andrew N. Norris

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Acoustoelasticity describes the relationship between elastic wave velocities and the initial stress present in a material. Traditional theories consider successive deformations involving small amplitude wave motion superimposed on an initially deformed material. Then, a constitutive relationship must be applied to relate the initial static deformation to the desired relationships involving initial stress, resulting in expressions of wave velocities involving a mix of elastic stiffness and compliance constants. In this article, a pure stress formulation is developed for acoustoelasticity. In this setting, the problem involves the superposition of a dynamic stress wave on an initially stressed material configuration, rather than the superposition of kinematic variables. The phase velocity of the stress wave is naturally related to the initial stress through only the compliance constants. Thus, compliances are the fundamental constants of acoustoelasticity.

Original languageEnglish (US)
Article number103002
JournalWave Motion
Volume114
DOIs
StatePublished - Sep 2022

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • General Physics and Astronomy
  • Computational Mathematics
  • Applied Mathematics

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