Meshless partition of unity method for attraction basins of periodic orbits: Fast detection of separatrix points

نویسندگان

  • Alessandra De Rossi
  • Emma Perracchione
  • Ezio Venturino
چکیده

Given a dynamical system, the problem of reconstructing the attraction basins can effectively be solved by means of meshfree interpolation tools. We propose a novel approach to calculate separatrix manifolds by detecting points via an efficient bisection-like scheme. Such data are then interpolated by means of the implicit Partition of Unity (PU) method. The detection algorithm works for dynamical systems of two equations, speeds up the computational time of the previously studied routines and allows the treatment of periodic orbits.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fast strategy for PU interpolation: An application for the reconstruction of separatrix manifolds

In this paper, the Partition of Unity (PU) method is performed by blending Radial Basis Functions (RBFs) as local approximants and using locally supported weights. In particular, we present a new multidimensional data structure which makes use of an integer-based scheme. This approach allows to perform an optimized space-partitioning structure. Moreover, because of its flexibility, it turns out...

متن کامل

Basins of attraction of a nonlinear nanomechanical resonator.

We present an experiment that systematically probes the basins of attraction of two fixed points of a nonlinear nanomechanical resonator and maps them out with high resolution. We observe a separatrix which progressively alters shape for varying drive strength and changes the relative areas of the two basins of attraction. The observed separatrix is blurred due to ambient fluctuations, includin...

متن کامل

An efficient algorithm to model dynamical system’s separatrix manifolds

Mathematical modelling is being applied in major disciplines, such as biology, medicine and social sciences and the aim of such models lies in the prediction of the temporal evolution of the considered quantities. The possible steady states of the system are completely determined by its parameters. However, it is possible that more steady states can originate from the same parameter set. In tha...

متن کامل

On the Stability and Basins of Attraction of Forced Nonlinear Oscillators

We consider second order ordinary differential equations describing periodically forced dynamical systems with one and a half degrees of freedom. First, we study Hill’s equation where we investigate boundedness of solutions. We also construct a class of equations, including a class of Hill’s equation, for which we can obtain closed form solutions. We continue to analyse the boundedness of solut...

متن کامل

The generalized product partition of unity for the meshless methods

The partition of unity is an essential ingredient for meshless methods named by GFEM, PUFEM (partition of unity FEM), XFEM(extended FEM), RKPM(reproducing kernel particle method), RPPM(reproducing polynomial particle method), the method of clouds in the literature. There are two popular choices for partition of unity: a piecewise linear FEM mesh and the Shepard-type partition of unity. However,...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2018