18 citations · 39 across the 6 of their papers we have counts for
6 papers
Energy transport and chaos in a one-dimensional disordered nonlinear stub lattice
Su Ho Cheong, Arnold Ngapasare, Vassos Achilleos +3
We investigate energy propagation in a one-dimensional stub lattice in the presence of both disorder and nonlinearity. In the periodic case, the stub lattice hosts two dispersive b…
Performance of chaos diagnostics based on Lagrangian descriptors. Application to the 4D standard map
Sebastian Zimper, Arnold Ngapasare, Malcolm Hillebrand +3
We investigate the ability of simple diagnostics based on Lagrangian descriptor (LD) computations of initially nearby orbits to detect chaos in conservative dynamical systems with…
Wave-packet spreading in disordered soft architected structures
Arnold Ngapasare, Georgios Theocharis, Olivier Richoux +2
We study the dynamical and chaotic behavior of a disordered one-dimensional elastic mechanical lattice which supports translational and rotational waves. The model used in this wor…
Energy spreading, equipartition and chaos in lattices with non-central forces
Arnold Ngapasare, Geogios Theocharis, Olivier Richoux +2
We numerically study a one dimensional, nonlinear lattice model which in the linear limit is relevant to the study of bending (flexural) waves. In contrast with the classic one dim…
Wave propagation in a strongly disordered 1D phononic lattice supporting rotational waves
A. Ngapasare, G. Theocharis, O. Richoux +2
We investigate the dynamical properties of a strongly disordered micropolar lattice made up of cubic block units. This phononic lattice model supports both transverse and rotationa…
Chaos and Anderson Localisation in Disordered Classical Chains: Hertzian vs FPUT models
A. Ngapasare, G. Theocharis, O. Richoux +2
We numerically investigate the dynamics of an one-dimensional disordered lattice using the Hertzian model, describing a granular chain, and the Fermi-Pasta-Ulam-Tsingou model…