TY - JOUR T1 - Closed-Form Expression for the Exact Period of a Nonlinear Oscillator Typified by a Mass Attached to a Stretched Wire AU - Mamode , Malik JO - Advances in Applied Mathematics and Mechanics VL - 6 SP - 689 EP - 701 PY - 2011 DA - 2011/03 SN - 3 DO - http://doi.org/10.4208/aamm.11-m1141 UR - https://global-sci.org/intro/article_detail/aamm/190.html KW - Nonlinear oscillator, exact period, elliptic integral. AB -

The exact analytical expression of the period of a conservative nonlinear oscillator with a non-polynomial potential, is obtained. Such an oscillatory system corresponds to the transverse vibration of a particle attached to the center of a stretched elastic wire. The result is given in terms of elliptic functions and validates the approximate formulae derived from various approximation procedures as the harmonic balance method and the rational harmonic balance method usually implemented for solving such a nonlinear problem.