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Three-Dimensional Reconstruction of Orbital Fractures
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Undular bores generated by fracture.

C G Hooper1,2, P D Ruiz1, J M Huntley1

  • 1Wolfson School of Mechanical, Electrical and Manufacturing Engineering (WSMEME), Loughborough University, Loughborough LE11 3TU, United Kingdom.

Physical Review. E
|November 16, 2021
PubMed
Summary
This summary is machine-generated.

Researchers demonstrate a novel method for generating undular bores, or dispersive shock waves, in solids. This study reveals a key mechanism for creating these nonlinear waves through tensile fracture in prestrained materials.

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Area of Science:

  • Solid Mechanics
  • Wave Propagation
  • Nonlinear Dynamics

Background:

  • Undular bores are nonstationary, oscillatory waves that change amplitude with distance.
  • Understanding their generation in solids is crucial for material science and engineering.

Purpose of the Study:

  • To report a novel mechanism for generating nonlinear dispersive shock waves in solids.
  • To experimentally validate theoretical models for undular bore formation.

Main Methods:

  • Utilizing high-speed pointwise photoelasticity to observe wave generation.
  • Employing tensile fracture (natural and induced) in prestrained polymethylmethacrylate bars.
  • Comparing experimental results with the viscoelastic extended Korteweg-de Vries equation.

Main Results:

  • Successfully demonstrated the generation of undular bores in solid bars.
  • Observed that the viscoelastic extended Korteweg-de Vries equation accurately describes key experimental features.
  • Noted that linearization near nonzero prestrain captures some leading-edge bore characteristics.

Conclusions:

  • Tensile fracture is an effective mechanism for generating undular bores in solids.
  • The presented experimental and theoretical frameworks offer new tools for studying dispersive shock waves in solid materials.
  • This research opens avenues for the application of dispersive shock waves in solid-state physics and engineering.