Results 31 to 40 of about 2,173,723 (357)
Architected Lattices with a Topological Transition
Advanced Engineering Materials, EarlyView., 2023 This article develops topological metamaterials showing multidirectional two‐step deformation under compression by embedding contact‐enabled topological mechanisms into lattice structures. Experiments on 3D‐printed 2D and 3D lattices and finite element simulations are conducted to demonstrate the working principle of the topological metamaterials.
Shivam Agarwal, Lihua Jin
wiley +1 more source
Chaotification of One-Dimensional Maps Based on Remainder Operator Addition
Mathematics, 2022 In this work, a chaotification technique is proposed that can be used to enhance the complexity of any one-dimensional map by adding the remainder operator to it. It is shown that by an appropriate parameter choice, the resulting map can achieve a higher
Lazaros Moysis +3 more
doaj +1 more source
The step-wise construction of solitary solutions to Riccati equations with diffusive coupling
AIMS Mathematics, 2023 A novel scheme based on the generalized differential operator and computer algebra was used to construct solitary solutions to a system of Riccati differential equations with diffusive coupling.
Romas Marcinkevicius +4 more
doaj +1 more source
Singularities and Moments of Nonlinear Systems [PDF]
IEEE Transactions on Automatic Control, 2020 The notions of eigenvalue, pole and moment at a pole of a continuous-time, nonlinear, time-invariant system are studied. Eigenvalues and poles are first characterized in terms of invariant subspaces. Tools from geometric control theory are used to define nonlinear enhancements of these notions and to study their relationship with the solution of ...
Alberto Padoan, Alessandro Astolfi
openaire +5 more sources
Discontinuous rate-stiffening in a granular composite modeled after cornstarch and water
Nature Communications, 2019 Cornstarch and water is a mixture that solidifies under impact. The authors find that ordinary sand behaves in a similar way when coated with a thin layer of viscoelastic polymer, suggesting a potential route for designing materials which respond ...
David Z. Chen +3 more
doaj +1 more source
Analysis of output frequencies of nonlinear systems [PDF]
, 2007 In this paper, an algorithm is derived for the determination of the output frequency ranges of nonlinear systems, which extends previous results on the output frequencies of nonlinear systems to a more general situation.
Billings, S.A., Lang, Z.Q., Wu, X.F.
core +1 more source
Nonlinear elliptic systems [PDF]
Anais da Academia Brasileira de Ciências, 2000 In this paper we treat the question of the existence of solutions of boundary value problems for systems of nonlinear elliptic equations of the form - deltau = f (x, u, v,Ñu,Ñv), - deltav = g(x, u, v, Ñu, Ñv), in omega, We discuss several classes of such systems using both variational and topological methods.
openaire +4 more sources
Collective Memory: Transposing Pavlov’s Experiment to Robot Swarms
Applied Sciences, 2021 Remembering information is a fundamental aspect of cognition present in numerous natural systems. It allows adaptation of the behavior as a function of previously encountered situations. For instance, many living organisms use memory to recall if a given
Alexandre Campo +2 more
doaj +1 more source
Nonlinear Negative Imaginary Systems with Switching [PDF]
arXiv, 2023 In this paper, we extend nonlinear negative imaginary (NI) systems theory to switched systems. Switched nonlinear NI systems and switched nonlinear output strictly negative imaginary (OSNI) systems are defined. We show that the interconnection of two switched nonlinear NI systems is still switched nonlinear NI.
arxiv
Linear parameter estimation for multi-degree-of-freedom nonlinear systems using nonlinear output frequency-response functions [PDF]
, 2006 The Volterra series approach has been widely used for the analysis of nonlinear systems. Based on the Volterra series, a novel concept named Nonlinear Output Frequency Response Functions (NOFRFs) was proposed by the authors.
Billings, S.A., Lang, Z.Q., Peng, Z.K.
core +4 more sources