刚体

The soft release mechanism in a controlled hold-down and release system proposed recently was discussed in this paper and a finite element and rigid-body mixed model was put forward to analyze its release characteristic during launch vehicle liftoff.

以一种新提出的新型强制式牵制释放系统为例，建立了分析运载火箭缓释放过程中缓释特性的有限元—刚体混合模型。

With the manipulator, which consists of three joints and three links and operates in a horizontal plane, the index υ is verified and used for evaluation the effect of the friction in several different parameters by simulation.

有限刚体运动系统和微振动系统是最常见的有限自由度动力学系统，它们的运动规律有原则上的区别，摩擦力对这两类系统运动的影响究竟有何区别，是值得探讨的问题。

Vibrancy testing of firearms includes six-dimension kinetic parameters of line displacement of body and angle displacement.

枪械振动测试包含刚体线位移和角位移六维运动参数。

A concept of digital prototype for the whole vehicle system was presented. The muti|body dynamic model of certain MPV (multi|purpose vehicle) using ADAMS software was established. A simulation of ride comfort under random road was performed.

以某多功能商务车为研究对象，利用ADAMS软件建立了车辆多刚体动力学模型，并进行了随机路面输入下的汽车平顺性仿真。

APFSDS with many sabots is a typical multi-body system.

n个卡瓣和弹体构成的尾翼稳定脱壳弹系统是一种典型的多刚体系统。

Moreover, the more deep research has been given, such as introduction to working mechanism and design principle, kinematics analysis of planet gear transmission system by the method of theorem of finite distance.

运用点的复合运动和刚体空间运动的有限位移定理对行星轮传动系统进行了运动学分析，并进一步探讨了搅拌螺杆的工作机理与设计原则。

The paper is based on the multi- rigid bodies systems dynamics and the flexibility polysome systems dynamics as the rationale, uses the related mathematics theory of mechanics and the method inferential reasoning polysome systems dynamics equation.

本文是以吉林省科技发展项目：&具有主动约束阻尼层的柔性机械臂系统动力学研究及其优化控制&项目为依托，以多刚体系统动力学和柔性多体系统动力学为理论基础，利用相关的数学力学理论和方法推导多体系统动力学方程。

The paper analyses several predicting methods for wave load acting on SWATH ship and compares the advantages and defects of quasi static method, rigid body dynamic method, hydro elasticity method and empirical formula method.

本文分析了小水线面双体船波浪载荷预报的几种方法，比较了准静态法、刚体动力学法、水弹性法、经验公式法的优缺点，讨论了结构有限元离散的注意事项，以及斜支柱结构形式对动载荷和疲劳的有利因素。

In the second part of the paper, the sport techniques of the flight elements was analysised in-depth theoretically by the movement technical structure:①the giant swing was first analysised in mechanics by applying the Kane's method, the dynamic equation of 5-link multi-body model was established, and the computer simulation software of the giant swing on the high bar was developed.

其次，作为单杠上飞行动作系统性研究的另一主要方面，本论文对飞行动作一般技术结构中的各技术环节进行了深入的理论分析：①着重对飞行动作准备阶段的回环运动技术进行了动力学分析，主要采用了多体力学理论中的Kane方法，建立了5环节人体回环运动的动力学方程，并应用计算机数值仿真技术研制开发了用于回环运动动力学分析的数值仿真软件，进而以动作实例对回环运动进行了数值仿真与误差分析，其所得到的数值仿真结果能够满足对人体回环运动的动力学分析和仿真要求；②对于飞行动作的撒手技术环节，本论文从人体环节相对运动角度，来分析撒手时人体质心的运动以及撒手时角动量参数，并列举了几种飞行动作撒手技术的基本力学指标；③关于飞行动作的空中技术，论文在总结了空翻转体动力学机理的研究成果基础上，对人体空中运动定量化问题进行了一般性描述，并进一步应用刚体动力学理论，着重建立起了描述空翻与转体技术之间定量化的关系，讨论了空翻转体运动的稳定性及其运动模式的转换问题，它对于定量地评定空翻转体技术以及今后对空翻转体动作进行数值仿真都具有理论上和实践上的重要意义；④关于飞行动作再握技术环节，本论文避免了以再握瞬时性的力学参数指标来描述再握技术特征的简单化途径，提出以再握下摆与回环下摆相对比的方法来研究再握技术，并以飞行动作再握技术的具体实例进行了对比分析，表明再握下摆技术相比回环下摆技术有着相当的困难性和复杂性，运动员对再握下摆过程中各环节的相对运动实施有效的控制，是连接高难动作以及顺利流畅地完成成套动作的关键。

Taking QY80 auto-crane's rocker mechanism of four一axle steering system asexample,this paper presents a new method which applies multibedy system Kinematics theory toanalyse mechanism's spatial motion, builds up mathematical model of optirnization for the rochermechanism of steering System, and chooses minimization adoptive random search method to developan optimization design microcomputer program,Using aboving method and program , this paper fi-nally optimlzes each design Variable, and obtains better resul...

以QY80汽车起重机四轴转向摇臂机构为例，利用多刚体系统运动学理论对机构作了空间运动分析，建立了转向摇臂机构优化设计的数学模型，并用改进了的约束随机方向搜索法编写了优化设计的微机软件，并已应用于生产实践。

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。