中国物理B ›› 2018, Vol. 27 ›› Issue (7): 74501-074501.doi: 10.1088/1674-1056/27/7/074501
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Zongbin Song(宋宗斌), Xueying Yang(杨雪滢), Wenxing Feng(封文星), Zhonghong Xi(席忠红), Liejuan Li(李烈娟), Yuren Shi(石玉仁)
Zongbin Song(宋宗斌)1,2, Xueying Yang(杨雪滢)1,2, Wenxing Feng(封文星)1,2, Zhonghong Xi(席忠红)1,2,3, Liejuan Li(李烈娟)1,2, Yuren Shi(石玉仁)1,2
摘要: We numerically investigate the nonlinear waves propagating in a one-dimensional particle chain when the damping effect is taken into account. It is found that decaying solitary waves exist, in which the amplitude of the wave decreases exponentially as time increases. Meanwhile, the velocity of the solitary wave also slows down as time goes. This result implies that the damping coefficient is an important parameter in such a nonlinear system. Theoretical analysis has also been done by the reductive perturbation method. The result indicates that the nonlinear waves propagating in such a system can be described by the damped KdV equation.
中图分类号: (General theory of classical mechanics of discrete systems)