Rectification effect on solitary waves in the symmetric Y-shaped granular chaind

摘要

The rectification effect on the propagation of solitary waves in the symmetric Y-shaped granular chain is numerically investigated. A heterojunction with mass mismatch occurs at the position of Y-junction by adjusting the branch angle. And the heavy-light heterojunction is more favorable for the solitary wave passing. Based on the characteristics of wave propagation velocity and gap's opening, we argue that both nonlinearity and collision effects dominate the rectification process. The rectification efficiency can be improved by adjusting the branch angle and the direction of incident solitary wave. The results have particularly practical significance for the potential design of acoustic diode devices.