Primary resonance of fractional-order Duffing–van der Pol oscillator by harmonic balance method Project supported by the National Natural Science Foundation of China (Grant Nos. 11872254 and 11672191). |
(color online) Amplitude–frequency response curves for m = 10, k = 40, c1 = 0.2, c2 = 0.5, α1 = 0.5, F1 = 10. |