刚体

In this paper, using multi rigid dynamics, by considering the match motion of the shooter s body, the automatic motion, floating and the rifle, a launch dynamic model is established for caseless rifle .

采用多刚体系统动力学理论，考虑人体、自动机、浮动体与全枪的耦合运动及自动机循环各阶段的运动与碰撞，建立了高频浮动新结构无壳弹枪在卧姿有依托状态下的发射模型，通过数值模拟，得出三发点射状态下无壳弹枪的发射特性，并与常规自动步枪作了比较，分析了无壳弹枪性能的优越之

Simulation results show significant vibration of the axial constraint force of the flexible links and the centroidal velocity of the central rigid body due to the increasing temperature.

数值仿真结果表明，当温度升高时，机械臂的轴向约束力和中心刚体的质心运动速度均出现显著振荡，而适当减小温度变化率，可以有效地控制振幅。

Theory; the spatial meshing theory includes comparative motion, comparative differential and conjugative curved surface; and the application of meshing theory includes gear drive and worm drive. The spatial meshing theory is the main part of the course.

课程的重点讲解内容有曲线的参数方程、切线、法面、弧长、曲率、空间曲线的基本公式、挠率及平面曲线的基本公式等；曲面第一和第二基本公式，法曲率、主方向和主曲率、欧拉公式、短程挠率、欧拉公式和贝特朗公式推广、相对法曲率和相对短程挠率等；刚体的绝对和相对运动速度、相对微分和绝对微分、相对速度和相对微分、轨迹曲面的法曲率和短程挠率等；空间共轭曲面的啮合条件、诱导法曲率、两类界限点、等距共轭曲面、空间啮合的二次接触原理等；蜗杆传动的数学模型建立及啮合特性分析方法等。

Eric: Havok was used for the rigid body simulation, but the entire destruction system had to be built as a combination of customized Havok code (to represent our destroyable shapes) and fully internal code (for sections like the stress simulation).

埃里克：的Havok用于刚体模拟，而且对整个销毁制度建设相结合的个性化的Havok代码（代表我们destroyable形状）和充分的内部代码。

The control of system can be converted to the motion planning problem for a driftless system.

首先导出由两个对称刚体组成的力学模型的非完整姿态运动方程。

The Lagrange modeling of a kind of eccentrically excited multi-rigid-body systems is analyzed.

对于一类偏心激励多刚体振动系统的Lagrange方法建模进行详细分析。

On the basis of the presented hydroelastic theory, a computer code HEAF (Hydroelastic Analysis Program for Fast Sea Transportations) is developed to calculate wave loads and dynamic responses of mono-or multi-hull high speed vessels in the frequency and time domain.

在理论研究的基础上，本文作者开发了计算机应用程序HEAF(Hydroelastic Analysis Programfor Fast Sea Transportations)，通过与结构干模态分析程序的数据接口，能够进行线性频域和非线性时域单体或多体高速船舶水弹性分析，可用以计算单体或多体高速船在各种海况下的波浪载荷、船体刚体运动和结构的弹性动力响应。

Piecewise analysis over the period of different tangential motion is used to overcome the energy inconsistence and the sign function is introduced to solve the second problem.

当处理多刚体系统的冲击问题时，经典的分析方法是通过在无限小的时间间隔上直接积分得到冲击前后的广义速度之间的关系。

Static and dynamic error models of inertial sensors are deduced from the types of interferential torque and dynamic principle.

根据干扰力拒的类型和刚体转动的动力学原理，推导了陀螺仪和加速度计的静态和动态误差模型。

Topics covered include oscillations, Keplerian orbits, two-body scattering, rotating frames of reference, rotation of rigid bodies in three dimensions, Lagrangian mechanics, Hamiltonian mechanics, and coupled oscillations.

内容包括振荡，开普勒轨道，两体散射，旋转参考坐标系，在三个方面，拉格朗日力学，哈密顿力学刚体转动，和耦合振荡。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。