Johannessen, Kim The Duffing oscillator with damping. (English) Zbl 1332.70025 Eur. J. Phys. 36, No. 6, Article ID 065020, 13 p. (2015). MSC: 70K40 PDFBibTeX XMLCite \textit{K. Johannessen}, Eur. J. Phys. 36, No. 6, Article ID 065020, 13 p. (2015; Zbl 1332.70025) Full Text: DOI
Johannessen, Kim An analytical solution to the equation of motion for the damped nonlinear pendulum. (English) Zbl 1291.70069 Eur. J. Phys. 35, No. 3, Article ID 035014, 13 p. (2014). MSC: 70K50 37N05 PDFBibTeX XMLCite \textit{K. Johannessen}, Eur. J. Phys. 35, No. 3, Article ID 035014, 13 p. (2014; Zbl 1291.70069) Full Text: DOI
Johannessen, Kim An anharmonic solution to the equation of motion for the simple pendulum. (English) Zbl 1241.70038 Eur. J. Phys. 32, No. 2, 407-417 (2011). Reviewer: Ludwig Kohaupt (Berlin) MSC: 70K99 PDFBibTeX XMLCite \textit{K. Johannessen}, Eur. J. Phys. 32, No. 2, 407--417 (2011; Zbl 1241.70038) Full Text: DOI
Johannessen, Kim An approximate solution to the equation of motion for large-angle oscillations of the simple pendulum with initial velocity. (English) Zbl 1373.70019 Eur. J. Phys. 31, No. 3, 511-518 (2010). MSC: 70K40 PDFBibTeX XMLCite \textit{K. Johannessen}, Eur. J. Phys. 31, No. 3, 511--518 (2010; Zbl 1373.70019) Full Text: DOI