Nonlinear Sciences – Pattern Formation and Solitons
Scientific paper
2009-06-22
Phys. Rev. E 80, 066601 (2009)
Nonlinear Sciences
Pattern Formation and Solitons
Scientific paper
10.1103/PhysRevE.80.066601
We investigate nonlinear localized modes at light-mass impurities in a one-dimensional, strongly-compressed chain of beads under Hertzian contacts. Focusing on the case of one or two such "defects", we analyze the problem's linear limit to identify the system eigenfrequencies and the linear defect modes. We then examine the bifurcation of nonlinear defect modes from their linear counterparts and study their linear stability in detail. We identify intriguing differences between the case of impurities in contact and ones that are not in contact. We find that the former bears similarities to the single defect case, whereas the latter features symmetry-breaking bifurcations with interesting static and dynamic implications.
Daraio Chiara
Kavousanakis M.
Kevrekidis Ioannis G.
Kevrekidis Panagiotis G.
Porter Mason A.
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