...非线性横摇； 参数辨识； 非线性阻尼； 非线性恢复项； 最小二乘法 [gap=1361]Key words： amphibious vehicle; nonlinear rolling motion; parameter identification; nonlinear damping; nonlinear restore item; least squ..
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The nonlinear damping and stiffness of a ship motion in the seas result in the coupling motion between rolling and pitch in big amplitude.
船舶运动时的阻尼和刚度非线性，导致船舶大幅运动时横摇和纵摇之间的耦合。
The random nonlinear differential equation of the rolling motion of ships in random beam waves is established considering the nonlinear damping, nonlinear restoring moment, and the random waves.
为了研究随机海浪中船舶航行安全域的构造及生存概率的预报方法，考虑阻尼和复原力矩的非线性及海浪的随机性，建立随机横浪中船舶运动的随机非线性微分方程。
The nonlinear damping and stiffness of a ship motion result in the coupling between rolling and pitch in big amplitude.
舰船运动的阻尼和刚度非线性，导致舰船大幅运动时横摇和纵摇之间的耦合。
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