Parametrically Driven Nonlinear Oscillators with an Impurity |
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作者姓名: | 张卓 唐翌 |
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作者单位: | DepartmentofPhysics,XiangtanUniversity,Xiangtan411105 |
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摘 要: | By virtue of the method of multiple scales,we study a chain of parametrically driven nonlinear oscillators with a mass impurity.An equation is presented to describe the nonlinear wave of small amplitude in the chain.In our derivation,the equation is applicable to any eigenmode of coupled pendulum.Our result shows that a nonpropagation soliton emerges as the lowest or highest eigenmode of coupled pendulum is excited,and the impurity tends to pin the nonpropagation soliton excitation.
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关 键 词: | 谐振子 非线性谐振子 振子链 |
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