Stochastic averaging of strongly nonlinear oscillators with small fractional derivative damping under combined harmonic and white noise excitations

被引:58
作者
Chen, L. C. [1 ]
Zhu, W. Q. [1 ]
机构
[1] Zhejiang Univ, Dept Mech, State Key Lab Fluid Power Transmiss & Control, Hangzhou 310027, Peoples R China
基金
中国国家自然科学基金;
关键词
Stochastic averaging method; Fractional derivative damping; Strongly nonlinear oscillator; Combined harmonic and white noise excitations; First passage failure; VISCOELASTICALLY DAMPED STRUCTURES; VIBRATION ISOLATION; CHAOTIC DYNAMICS; CALCULUS; SYSTEMS; EQUATION; MODEL;
D O I
10.1007/s11071-008-9395-6
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A stochastic averaging method for strongly nonlinear oscillators with lightly fractional derivative damping of order alpha (0 <alpha < 1) under combined harmonic and white noise external and (or) parametric excitations is proposed and then applied to study the first passage failure of Duffing oscillator with lightly fractional derivative damping of order 1/2 under combined harmonic and white noise excitations in the case of primary parametric resonance. Numerical results show that the proposed method works very well.
引用
收藏
页码:231 / 241
页数:11
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