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中文摘要：
重颗粒区域由压缩到稀疏的结构转变导致了一维复合颗粒链中能量衰减的渡越行为,并且这种结构转变与界面附近重颗粒的运动状态的变化密切关联.分析表明这种运动状态的转变导致了界面处的反射率在两个分支存在较大差别,从而导致了轻颗粒区域能量在两个分支以不同的速率衰减.
英文摘要：
The structure transition from compression state to dilation state in both heavy-particle sections gives rise to the crossover of the energy decay in one-dimensional composite granular chain. And the structure transition closely relates to the change in state of motion of heavy grain at both interfaces. The analysis demonstrates that the change in state of motion gives rise to the great difference of reflectivity in both branches,which induces different rates of energy decay of light-particle section in both branches.
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