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anomalous strain energy transformation pathways in metamaterials,…

- - - - Spectral energy distribution
        
        leads directly to a spectral entrophy of lattice deformation (Shannon's type)
        
        also a basic measure of complexity of mechanical responses of metamaterials to surface and body loads
        
        It's variance with a material coordinate represents the decrease of info about surface loads in the material interior
  - - - negative poisson's ratio
      - negative bulk modulus
      - negative longitudinal stiffness and compliance
      - Reverse Saint-Venant effect
      - functional properties due to internal structure design of lattice materials
        
        reconfigurabilitiy
        
        multistability
        
        polymorphism
        
        polymorphic metamaterials may well perform as superdampers
        
        their unusual quasi-static performances could complement fast aperiodic impact loads
        
        frequency spectra extend far beyond reasonable acoustical metamaterial's bandgap
        
        this impact load could be damped in supersonic regime by controlling instantaneous strain energy distributions in the material before any oscillatory process is established.
        
        symmetry breaking
        
        deformation
        
        strain energy reprogramming
        
        control
        
        reprogramming
        
        redistribution
    - - internal structure
      - topology
      - geometric architecture
      - design of metamaterials
        
        application of large amount of deformation
        
        stiffness modulations
- - - - qualitative shapes of this determine how the material translates the instantaneous strain energy of deformation between two points in space
    - - analogous to Parseval's theorem
    - - interpreted as purity of signal or used to distinguish between artificial and natural signals