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This study shows how training disordered solids with specific deformations creates nonlinear responses. This method enables new functionalities like frequency conversion and logic gates in materials.

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Area of Science:

  • Materials Science
  • Solid Mechanics
  • Nonlinear Dynamics

Background:

  • Linear elastic materials have predictable, linear responses to deformation.
  • Designing materials for nonlinear behavior is complex but offers advanced functionalities.
  • Previous work established training methods for material responses.

Purpose of the Study:

  • To demonstrate a training-based approach for achieving inherent nonlinear responses in disordered solids.
  • To showcase the design of specific nonlinear functions through controlled plastic deformations.
  • To analyze the convergence rates of the training process for different functions.

Main Methods:

  • Applying carefully designed strain sequences to disordered solid materials.
  • Utilizing plastic deformations to alter and program material responses.
  • Training the material through iterative application of deformation paths.

Main Results:

  • Successfully demonstrated nonlinear material functions including frequency conversion and logic gates.
  • Achieved programmable expansion or contraction along a single axis based on strain sequence.
  • Observed that the convergence rate of the training process is dependent on the specific function being trained.

Conclusions:

  • The training approach effectively enables the design of complex nonlinear material behaviors.
  • Plastic deformation is a viable mechanism for programming advanced material functionalities.
  • The efficiency of this training method varies with the complexity of the desired functional output.