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Abstract and Applied Analysis
Volume 2014, Article ID 317543, 5 pages
Research Article

Travelling Wave Solutions of Nonlinear Dynamical Equations in a Double-Chain Model of DNA

1Department of Mathematics, Foshan University, Foshan Guangdong 528000, China
2Guangzhou Maritime College, Guangzhou Guangdong 510725, China

Received 6 January 2014; Revised 24 February 2014; Accepted 10 March 2014; Published 3 April 2014

Academic Editor: Yonghui Xia

Copyright © 2014 Zheng-yong Ouyang and Shan Zheng. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We consider the nonlinear dynamics in a double-chain model of DNA which consists of two long elastic homogeneous strands connected with each other by an elastic membrane. By using the method of dynamical systems, the bounded traveling wave solutions such as bell-shaped solitary waves and periodic waves for the coupled nonlinear dynamical equations of DNA model are obtained and simulated numerically. For the same wave speed, bell-shaped solitary waves of different heights are found to coexist.