刚体

The result demonstrates that this method can very efficiently model and simulate the problem of steering wheel shimmy .

将汽车前悬架多刚体动力学模型的仿真结果、柔体动力学模型的仿真结果与道路试验数据相比较，结果表明刚弹耦合建模的方法能更有效地研究转向轮摆振。

The systematic error models established in the paper are rigid rotation model, volumetric strain model, homogeneous deformation model and heterogeneous deformation model. The recognition of systematic models is carried step by step from the complex to the simple by hypothesis tests.

所建立的系统偏差模型有刚体转动模型、体应变模型、均匀形变模型和非均匀形变模型，模型的确认通过假设检验方法由复杂模型形式向简单模型形式逐步进行。

Based on the analysis of dip angle, friction coefficient between rigid bodies, influence effect of floor sliding block and roof fracture rock-mass, working resistance of support as well as compound characteristics of face surrounding rock, main factors which lead to destabilize in system "R-S-F" were obtained, and the controlling pattern of dynamic stability of firming bedding, controlling keys, achieving the goal were also established.

通过对工作面围岩组成特征、支架工作阻力、顶板破断岩块及底板破坏滑移体影响效应、刚体之间的摩擦因数以及煤层倾角等因素的分析，给出了引发"R-S-F"系统失稳的主导参数，确定了"稳固基础，控制关键，达到目的"的"R-S-F"系统动态稳定性控制模式和现场生产管理过程中需注意和解决的关键技术问题。

A method of double third -power spline is used to add more nodes to the surface of a spiral bevel gear .

提出了一种用位移矩阵法精确求解实现四个或五个位置的刚体导引机构的综合，实现了两边架杆四个或五个对应位置的函数机构的综合以及其它一类连杆机构综合的方法。

Use thin-plate spline function, the completion point of the non-rigid registration method.

使用薄板样条函数，完成点对的非刚体配准方法。

Both motor car and each trailer of HST were modeled as a multi-rigid-body system with two suspensions, and LVT was modeled as an assembly of track segment elements with 24 degrees of freedom. The vertical vibration matrix equation of the system was established on the basis of the principle of the total potential energy with stationary value in elastic system dynamics and the rule of "set-in-right-position" for formulating system matrixes, and then Wilson-θ numerical integration method was used to solve the problem. The dynamic responses of the system were calculated when the train runs at the speed of 200 km/h. And the effects of vertical stiffness of rail fastener and block pad on vertical vibration responses of the system were investigated.

其原理是：将高速列车的动车和拖车模拟为具有二系悬挂的多刚体系统；将弹性支承块式无碴轨道模拟为具有24个自由度的轨段单元的集合；基于弹性系统动力学总势能不变值原理及形成系统矩阵的"对号入座"法则，建立此系统竖向振动矩阵方程，并采用Wilson-θ数值积分法求解，计算速度为200 km/h时此系统竖向动力响应，研究轨道刚度对此系统竖向振动响应的影响规律。

In this paper, we use linear elastic and power hardening function to approximately represent the stress-strain curve of material.

将材料的本构关系描述为线弹性幂强化形式，推导出了各杆铰接在一个定轴转动刚体上的平面杆系弹塑性分析的普遍表达式，使问题得到了圆满的解决。

On the one hand, the linear interpolation in plane makes it easy to separate the three-dimensional null subspace corresponding to rigid body motions, hence what is left to do is just to compute the inverse of a symmetric definite submatrix numerically.

在物理坐标系中的线性插值函数便于将三个刚体模式分离出来，从而只需计算对称正定子阵的逆，避免了求广义逆的数值困难；在参考坐标系中的高阶插值函数则可保持原平面弹性单元的列式方式。

The complexity of tangential movements during impact is one of main characteristics for multi-rigid-body systems.

复杂的切向运动模式是多刚体碰撞和冲击问题的主要特征之一。

The main purpose of the present paper is to obtain the relation between the abstract presentation of Euclidean objectivity and its component representation with respect to the general curvilinear coordinate systems with a relative rigid motion under a fixed frame of reference, so that the tensor representation of Euclidean objective quantity has its component form.

建立了欧几里德标架无关性的一般表述与某一参考标架\phi 下作相对刚体运动的一般曲线坐标、分量表述之间的关系，从而使欧几里德标架无关性的张量表述有相应的分量表述形式。

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。