A short remark on Ren–Hu's modification of He's frequency–amplitude formulation and the temperature oscillation in a polar bear hair. Issue 3 (December 2019)

• Record Type: Journal Article
• Authors: Wang, Qingli; Shi, Xiangyang; Li, Zhengbiao
• Is Part Of: Journal of low frequency noise, vibration, and active control. Volume 38:Issue 3/4(2019)
• Page Start: 1374
• Page End: 1377
• Publication Date: 2019-12
• Subjects: Nonlinear oscillator -- He's frequency–amplitude formulation -- polar bear; Vibration -- Periodicals; Noise -- Periodicals; Sound -- Periodicals; Damping (Mechanics) -- Periodicals; Damping (Mechanics); Noise; Sound; Vibration; Periodicals; 620.205
• DOI: 10.1177/1461348419831478
• Languages: English
• ISSNs: 1461-3484

Abstract

Recently Zhong-Fu Ren and Gui-Fang Hu suggested a modification of He's frequency–amplitude formulation for nonlinear oscillators. This paper shows that this modification results in a lower accuracy than that by the original one. The temperature oscillation in a polar bear hair is used as an example to illustrate the effectiveness of He's frequency–amplitude formulation.