A new numerical approach for tracing periodic solutions in nonlinear dynamical systems using CGM with PAC

Iranian Journal of Numerical Analysis and Optimization

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 11 مهر 1404

نوع مقاله: Research Article

شناسه دیجیتال (DOI): 10.22067/ijnao.2025.92177.1610

نویسنده

Khalid Farhan Fazea^*

Department of Biomedical Engineering, Shatrah University College of Engineering, Shatrah Thi-Qar, Iraq.

چکیده

In this research paper , we introduce a new numerical approach that combines the Conjugate Gradient Method (CGM) and Pseudo- Arclength Continuation (PAC) to trace periodic solutions in nonlinear dynamical systems. By minimizing Jacobian computations, the method reduces computational costs, making it efficient for large systems. We apply the method to the Lorenz and Duffing oscillator systems, utilizing Floquet theory for stability analysis. The results show that the proposed approach can accurately trace periodic solutions and provides a robust analysis of system stability. This method offers significant computational advantages while maintaining high accuracy in tracing periodic behaviors in complex systems.

کلیدواژه‌ها

Periodic solutions in nonlinear systems؛ Numerical methods for dynamical systems؛ CGM with PAC