@article{oai:miyazaki-u.repo.nii.ac.jp:00002914,
 author = {大西, 惇平 and 岡部, 匡 and Okabe, Tadashi and Ohnishi, Jumpei and 岡部, 匡 and Okabe, Tadashi},
 journal = {宮崎大学工学部紀要, Memoirs of Faculty of Engineering, University of Miyazaki},
 month = {Sep},
 note = {An improved averaging method is proposed in order to obtain a highly accurate periodic solution composed of only odd order harmonics in a strongly nonlinear dynamical system. In this method, sum of the Jacobian elliptic cosine (cn) and sine (sn) function is incorporated as the generating solution. The proposed method is applicable to relatively general nonlinear systems based on Duffing equation. The stability of the solution is analyzed by obtaining the characteristic multipliers of the variational equation. The numerical results for typical nonlinear oscillators are shown. The effectiveness of the proposed method is verified by comparing the computational results with those obtained by the shooting method.},
 pages = {227--232},
 title = {異なる二つの楕円関数の和を母解とする楕円型平均},
 volume = {38},
 year = {2009},
 yomi = {オオニシ, ジュンペイ and オカベ, タダシ and オカベ, タダシ}
}