期刊
JOURNAL OF SOUND AND VIBRATION
卷 306, 期 1-2, 页码 372-376出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2007.05.021
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This paper applies He's variational iteration method to determine the periodic solutions of oscillators in a u(1/3) force. With the procedure, the excellent approximate frequencies and the corresponding periodic solutions can easily be obtained. (c) 2007 Elsevier Ltd. All rights reserved.
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