However, the usual FDM (finite difference method) schemes disregard the symplectic conservation for conservative systems.
但通常的差分格式并不考虑保辛的性质，即使对保守体系。
An explicit precise integration for nonlinear dynamics problems is presented, which is suitable to solve the non-conservative systems with multi-DOF and strong nonlinearity.
对于非线性动力学问题，给出了一个显式的精细积分算法，适用于多自由度、强非线性、非保守系统。
In this thesis, a new analytical approximate method is presented to solve large amplitude nonlinear oscillations of single degree of freedom non-natural conservative systems.
本文提出了一种新的解析逼近方法来求解一类非线性振动问题。
In this thesis, a new analytical approximate method is presented to solve large amplitude nonlinear oscillations of single degree of freedom non-natural conservative systems.
本文提出了一种新的解析逼近方法来求解一类非线性振动问题。
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