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运动方程

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Based on the Timoshenko-Mindlin hypothesis and the Hamilton Principle, a set of governing equations of motion for the laminated non-circular cylindrical thick shells were founded.Using the Galerkin procedure,the Mathieu equation only with time variable was obtained,and this equation was solved by the method of increase harmonic balance.

基于Timoshenko-Midlin假设及Hamilton变分原理,建立了层合中厚非圆柱壳的非线性运动控制方程,采用伽辽金技术,得到仅含时间参数的Mathieu型方程,然后应用增量谐波平衡法进行求解。

Conservation of mass.conservation of moment muni and conservation of energy are basic regularity obeyed by all movement in nature.For a certain problem in natrue .if we quantify the corresponding conversation law . we can deduce partial differential equation reflecting this problem .and every differential equation reflecting a special physical phenomenon on certain codition.

质量守恒、动量守恒和能量守恒是自然界一切运动所遵循的基本规律,对于自然界的某一特定问题,如果把相应的守恒律数量化,就导出刻划这个问题的微分方程,每一个微分方程都在一定条件下刻划了某一特定的物理现象。

Use the DES method that is based on Spalart-Allmaras equation model, numerical value begs solution Navier-Stokes equation, imitate is circled spread the vortical campaign after producing depart.

采用基于Spalart-Allmaras方程模型的DES方法,数值求解Navier-Stokes方程,模拟绕流发生分离后的旋涡运动。

Kinetic equations of multibody systems with scleronomic constraint s are projected along the feasible and unfeasible directons of the constiaints respectively,and generalized accelerations of the systems are decomposed along the two directons using the bases of constraint matrix and its orthocomplement.

通过约束矩阵及其正交补的两组基,将定常约束多体系统的动力学方程沿与约束相容和不相容的两个方向上投影,并将系统的广义加速度沿这两个方向进行分解,得到描述系统运动的纯微分方程和求约束力的公式,同时提出了违约修正的一种方法。

First, the finite difference was used to solve numerically the coupled Navier-Stokes equation and the convective-diffusion equation for surfactant in a orthogonal body-fitted coordinate system. The effect of surfactant on the flow field inside and around the deformed drop was successfully simulated.

本文在正交贴体坐标系下采用有限差分方法,对不可压缩流体的Navier-Stokes方程和表面活性剂的对流—扩散方程耦合求解,从而首先模拟了表面活性剂对单液滴运动的影响。

Chapter 7. Make use of the unified field equation studied intrinsic magnetic field for planets, got that the magnetic induction equation is satisfied with the motion of planetary inside matter.

第七章 利用统一场方程研究了行星的固有磁场,也得到了行星内部物质运动所应满足的磁感应方程。

He also extended quasi-geostrophic non-acceleration theorem to primitive equation non-acceleration theorem.

他在国际上首创湿倾斜涡度发展理论和全型垂直涡度方程,成功地揭示青藏高原西南涡和夏季江淮流域的暴雨发展机理,揭示副热带高压形态变异的成因;证明创新的原始方程中的无加速定理以及大气运动的动力强迫和热力强迫的调配率;开展创新性气候动力研究,揭示中高纬和热带海气相互作用差异的机理及厄尔尼诺影响台风频率的机制,继承和发展了我国学者关于青藏高原对大气环流和天气气候影响的研究;在国际上首次把亚洲季风爆发分为三个阶段,证明由于中高纬度的强地转性和斜压性使其海气相互作用的特征与热带显著不同;首次用数值模式提出厄尔尼诺影响台风的机制,得到国际上的高度评价。

In this paper,pose representation by quaternions are researched.With the basic quaternion algebra,the "quaternion based rotations combination theorem" is introduced and proved theoretically.On the basis of this theorem,a method for compute of pose nonliear state transfer function and its linearization is purposed.Then,the computing of the measurement function and the linearization is studied.With the Extended Kalman Filter,the pose is tracked and estimated.

研究用四元数表示物体的姿态,在四元数基本运算法则基础上提出并证明了"基于四元数的多个旋转运动合成规则",然后将此规则为依据,推导出一种用来计算姿态非线性状态方程系数的方法,对非线性状态转移函数进行线性化,并且研究了测量方程函数的确定及线性化,借助扩展Kalman滤波实现了对姿态的跟踪。

This is the funcdamental equation of thermo-motion in the reversible process for a molecular system.

这就是在可逆过程中的热运动基本方程,也就是传统热力学中所称的热力学基本方程。

Uthor has used the normalized Routh equations[1] to solve dynamic problem s and establish the general method for finding out the constraintforces and the variations of the state of motion for the complicated systems.

本文阐明了标准化的Routh方程[1]的应用,给出了求解系统动力学问题的约束反力及运动状态变化的普遍方法,并给出了相应的矩阵方程。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

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