动力学的

Both viscous damping and air drag force must be introduced into the dynamic models. The experiment is carried out in the single-axis air-bearing test bed according to the experiment scheme in chapter 3. The results demonstrate the validity of the developed model, while the conventional zero-order approximate approach could lead to bad results for some high speed cases.

结果表明了传统零次近似方法在某些条件下已不能正确描述柔性体的刚柔耦合动力学性质，而一次近似的刚柔耦合动力学模型得到的结果与实验相符，从而证实了一次近似耦合模型的正确性和可靠性。

In this paper, the overall design scheme of one assault rifle prototype with double cyclic systems and variable firing rate is illuminated in brief and the related analytical models of one DOF and two DOF by the basic theory of dynamics of multi-rigid-body system is established. The calculating analogue program in VB computer language for analyzing the movement regularities of floating body of the assault rifle prototype with some universal property and function of man-machine conversation is completed. The comparison between the calculating results and the experimental results is conducted also.

本文对某步枪双循环变射频发射原理样机方案进行了简单的说明，应用多刚体系统动力学基本理论建立了原理样枪的一自由度和二自由度动力学分析模型，用VB编写了具有一定通用性和人机对话功能的自动机运动规律分析计算程序，并将计算结果与试验结果进行了比较，验证了数理模型的正确性。

Regarding the open chain plane multibar performing mechanism as the object, this paper analyzes its establishing problem of dynamics equation from new degree, and this paper gives the new general formula to the similar velocity, similar angular velocity, inertial coefficient by turns.

文章以开式链平面连杆机构为对象，从新的角度探索分析其动力学方程的建立问题，文中依次对类速度、类角速度、惯性系数、广义力给出新的求解通式。最后用拉格朗日方程建立相应的动力学方程

The skeleton of the new autoignition model is based on Shell model, which considers the effect of methane on autoignition of diesel.

由于着火过程持续时间较短，仅占湍流燃烧过程的一小部分，因此，在能够充分描述着火过程主要特征的情况下，着火模型应尽量简单，所以，虽然有文献提出了着火过程的详细化学动力学模型，实际上一般倾向用简化的化学动力学模型 [1]，这是Shell着火模型至今仍然得到广泛应用的原因。

To improve the braking safety of automobile, the mechanics characteristic of differential brake was analyzed, automotive subsystems models were built by applying ADAMS/ Car, automotive mechanics simulation model was built by setting some main subsystems, beeline braking stability and turning braking stability were simulated, and the effect of differential brake on the stabilities was studied.

为了提高汽车制动的安全性，对差动制动的力学特性进行了分析，运用ADAMS／Car软件建立了汽车各子系统动力学模型，通过对主要子系统进行相应的设置，建立了整车动力学仿真模型，进行了直线制动及转弯制动稳定性仿真分析，研究了差动制动对制动稳定性的影响。

It provided a basis for building more accurate dynamical model. 4. Based on AD250 articulated dump truck multi-rigid body dynamics model, flexiblemulti-body models of suspension components for which the deformations are relatively important were built using finite element method. Modified Craig–Bampton modal synthesis and flexible multi-body methods were applied to build rigid-flexible coupling multi-body model of the truck. Dynamic simulations with different road profiles were performed.

基于AD250铰接式自卸车多刚体动力学模型，应用修正的Craig–Bampton模态综合法，对车辆行驶过程中相对变形较大的悬架杆件进行模态分析，把生成的模态中性文件引入到多刚体模型中取代相应的刚体，建立了相对多刚体模型更符合工程实际的整车刚柔耦合多体动力学模型。

Meanwhile, on the basis of the multi-rigid body system dynamics, this paper establishes the virtual prototype of the AGL by software ADAMS. And computes the movement laws of the bolt body and gun body of the AGL, illuminates change reason, which are compared with the results of before-mentioned the simulating and computing program.

同时运用多刚体系统动力学理论和机械系统动力学仿真软件ADAMS建立了榴弹发射器的虚拟样机模型，得出了机体和枪身等部件的运动规律，并进行了相应的分析说明，同时与前面的模拟计算程序的结果进行了比较分析。

The main contents include ? the foundation of MD simulation cell in Grand Canonical Ensemble;? the establishment of elastic collision mechanism between hydrogen molecules and carbon nanotube walls and arithmetic design;? molecular dynamics simulation details of hydrogen physisorption in single walled carbon nanotube arrays and program design;? the acquirement and analysis of computer simulation results, where the influences of tube diameter, distance between tubes, temperature and pressure on hydrogen physisorption in SWCNTA are investigated in detail.

主要内容为：①巨正则系综分子动力学模拟元胞的创建；②氢分子与碳纳米管壁弹性碰撞机制的建立及算法设计；③碳纳米管阵列物理吸附储氢的分子动力学模拟细节及程序设计；④计算机模拟研究结果的获取与分析，重点研究了管径、管间距、温度和压强对单壁碳纳米管阵列物理吸附储氢的影响。

On the basis of the investigations of combustion and pyrolysis characters of the combustibles in MSW, kinetic parameters such as activation energy and preexponential factor of each combustible were determined.

在对燃烧物动力学上的燃烧及高温分解的基本调查中，每种可燃物的动力学参数，如活化能和指数因数是确定的。

Decay constant k of Surface Dynamics of the modified surface can be calculated using the measurement results of the contact angle and the angle - dependent XPS, being a probe, k values can be used to characterize the surfa...

通过PET表面的接触角及F/C比的测定，计算出表面动力学衰减常数k，三种测试方法得到的k值都可以用来表征碳氟等离子体处理PET的表面动力学行为，其中混合气体的k值最小。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。