Abstract
Homoclinic orbits in a shallow arch subjected to periodic excitation are investigated in the presence of 1:1 internal resonance and external resonance. The method of multiple scales is used to obtain a set of near-integrable systems. The geometric singular perturbation method and Melnikov method are employed to show the existence of the one-bump and multi-bump homoclinic orbits that connect equilibria in a resonance band of the slow manifold. These orbits arise from singular homoclinic orbits and are composed of alternating slow and fast pieces. The result obtained imply the existence of the amplitude-modulated chaos for the Smale horseshoe sense in the class of shallow arch systems.
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The authors greatly appreciate the anonymous reviews for their insightful comments and suggestions for further improving the quality of this work. This research was supported by the National Natural Science Foundation of China, Tian Yuan Special Foundation (No. 11326132) the National Natural Science Foundation of China (No. 11202095, 11172125, 61203128) and the National Research Foundation for the Doctoral Program of Higher Education of China (20133218110025).
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Yu, W., Chen, F. Homoclinic orbits in a shallow arch subjected to periodic excitation. Nonlinear Dyn 78, 713–727 (2014). https://doi.org/10.1007/s11071-014-1471-5
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DOI: https://doi.org/10.1007/s11071-014-1471-5