运动方程

Knowing the turbulent spectrum, representative time domain turbulent procedure is developed in this paper. According to the procedure, the relative movement equation for different particles is deduced and the method of calculating the rate of inertial collision and coagulation is proposed.

本文在已知湍谱的条件下，建立了代表性时域湍动过程；并据此推导了不同粒子的相对运动方程，提出了计算惯性碰撞凝聚率的方法。

The restoring force of the isolation system is studied, and the dynamic response program of the isolation system under earthquake excitation is drawn up in the time domain.

运用隔震理论建立结构隔震体系的动力模型和运动方程，着重考虑了隔震体系的恢复力特性，进行了隔震体系在时域内的地震反应程序设计。

Taking the moments of hip and knee joint as its controlled variables, the simulation of the motion equation shows that: After increasing the joint moment at the cushioning phase, the vertical velocity of the body center of mass distinctively speedup while horizontal velocity fall to some degree. Thus, the resultant velocity remains basically constant, but the result distance of long jump can be increased due to the enlargement of the angle of take-off.

以髋、膝关节肌力矩作为运动方程的控制变量，对其修改后的模拟结果表明：增大缓冲阶段的关节肌力矩后，人体重心的垂直速度得到明显提高，而水平速度则有所下降，在腾起合速度变化不大的情况下，由于腾起角的增大提高了跳远成绩。

By the intake form of the equations of motion of celestial bodies complex, there is no rigorous analytical solution, common analytical methods and numerical methods seek an approximate solution, the former is called the general perturbation, the latter as a special perturbations.

受摄天体的运动方程形式复杂，没有严格的分析解，常用分析方法和数值方法求近似解，前者称为普遍摄动，后者称为特殊摄动。

The high order single step algorithm is a new method of direct integration for solution equations of motion.

非线性结构时程分析的高阶单步算法是一种新的求解运动方程的直接积分法。

Based on the analysis, the calculation model, motion equations and slippage criteria of isolated structures are presented.

在试验研究分析的基础上提出了隔震结构的计算模型、运动方程及滑动判别条件。

The free surface of the flow can be obtained from the discrete solution of the free surface flow equation.

建立了三维水流大涡模拟数学模型，采用迭代法求解速度和压力，再由离散化的自由水面运动方程求解自由水面；根据试验观测的水面线和流速分布资料，对数学模型进行验证。

The basic equations of structure are derived from Hamilton variational principle and the constitution of material utilizes the increment theory.

基于Hamilton变分原理导出圆柱壳的运动方程，本构关系采用增量理论，借助增量数值算法求解动力方程组。

According to the peculiarity and deformation of the systems, the main frame is of bending deformation and the subframe is of shear deformation. With concentrated masses model, the dynamic equation of this system is derived.

根据控振结构体系的特点和通过对该结构的变形分析：主框架采用弯曲模型，而次框架采用剪切模型的集中质量模型，据此推导了控振结构的运动方程。

The application of polar coordinates system in the CNC LATHE-MILLING;2. A fast particle-moving algorithm for particle-in-cell simulation of plasmas in polar coordinates system was proposed, in which the local rectangular coordinates approximation was used in the area near the position of the charged particle at every time step.

提出了一种在极坐标系下快速推进带电粒子的等离子体粒子模拟算法，该算法在每个时间步长内对带电粒子位置附近的区域采用局部直角坐标系近似，并通过坐标变换，得到粒子运动方程求解的显式格式，从而避免了极坐标系下隐式格式直接迭代求解所带来的容许误差，并提高了计算效率。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐