本文以清楚的物理概念，依据经典力学原理建立了两相介质完整的动力学非线性方程组。
Based on clear physical concepts, complete nonlinear dynamic equations of two-phase media are derived by using classic mechanical principle directly.
运用变质量系统的基本原理，建立轴流脱粒过程中谷物运动的非线性动力学模型。
Based on the principle of a varied mass system, the non linear mathematical model of the crop mechanics for an axial threshing process was set up.
为了研究动力学系统和混沌中产生的跳跃随机性，利用能量平衡原理分析了二阶非线性电路的退化方程。
Chaos related discontinuity jumps in nonlinear dynamic systems were analyzed using a second order nonlinear circuit model and degenerative equations based on the energy balance principle.
然后根据选定的量测方案建立观测方程，并按极大似然原理导出非线性动力学系统的参数辨识算法。
According to the selected scheme an equation is constituted for the observation. Identification algorithm for the nonlinear dynamic system, is deduced following the maximum likelihood principle.
对基于非线性涡流线原理的风力机空气动力学模型进行了数值试验。
A wind turbine aerodynamics simulation module based on non-linear vortex-line theory is tested in the numerical aspect in this paper.
根据虚功原理和薄板度理论，对纸张在自重作用下的静动力学特性作了非线性有限单元法数值建模。
Based on the virtual work principle and thin plate theory, the mechanical performance of the moving paper under gravity was analyzed by nonlinear FEM.
本文给出了非线性弹性动力学两时端边值问题的某些一般定理及变分原理。
In this paper, some general theorems and variational principles of the boundary value problem for two time instants in nonlinear elastodynamics are developed.
由哈米尔顿原理作为动力学基础，建立起系统的非线性耦合运动方程组。
Based on the Hamiltonian principle, the coupled nonlinear functions of the system are presented as a Neumann problem.
文中根据四旋翼垂直起降机的动力学和运动学原理对其建立非线性模型和线性模型。
In the paper, according to the dynamics and kinematics principle of the four-rotor VTOL aircraft, non-linear and linear models were established.
文中根据四旋翼垂直起降机的动力学和运动学原理对其建立非线性模型和线性模型。
In the paper, according to the dynamics and kinematics principle of the four-rotor VTOL aircraft, non-linear and linear models were established.
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