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This paper, which focused on the structure optimization theory and method, has finished such studies as follows: The three dimension model has been built, which provide the necessary conditions for the building of the dynamics equivalent model. By the launch dynamics simulation, the loads of the key joints when the rocket is launched has been got, which provide the necessary data for the finite element analysis and the structure optimization. The finite element model of the excess weight parts of the rocket has been built, buy the finite element intension analysis of the model in two conditions, the displacement and the stress of the key points have been got, which make us know the distributing of the stress and the transmogrification of the part. To satisfy the intension and the precision design request and to decrease the weight of the part as many as possible, the part has been topology optimized by the structure optimization theory and method. After that, the new model has been analysis in structure and launch dynamics. The contrast of the character change of the old part and the new part and the influence on the rocket system have been studied.

本文以结构优化理论和方法为核心，主要做了以下工作：建立了某自行火箭炮全炮三维实体模型，为建立该火箭炮系统的动力学等效模型提供了必要条件，进行了发射动力学仿真，得到该火箭炮发射装置各关键连接部位在发射状态下的载荷，为有限元分析和结构优化提供了必需的数据；建立了该火箭炮发射装置超重部分的有限元模型，分两种工况，对模型进行了有限元强度分析，得出了关键部位的位移和应力值，对其的应力和变形分布有了具体的了解；运用结构优化的理论和方法，对该火箭炮发射装置超重部分进行了拓扑优化，使其在满足强度和精度的要求下尽可能多地减轻重量，对优化后得到的模型进行了结构分析和发射动力学分析，对比了该部件优化前后的特性变化以及对火箭炮系统的影响。

Damping joints are designed to reduce the vibration of frame structures based on travelling wave formulation.

基于框架结构的行波动力学模型，设计阻尼铰以达到减振的目的。

The effect of expanding degree on the connection strength of hydraulically expanded and mechanically expanded tube-to-tubesheet joints of heat exchangers was investigated by experiments based on the specimens with seven triangularly arranged holes perforated in tubesheets.

采用按三角形排列的7管孔试件，进行了胀紧程度对换热器液压胀接和机械胀接接头连接强度影响的试验研究。

A function description method of synergies among the human joints was proposed by using trigonometric and exponential functions.

利用三角函数和指数函数，建立了人体关节角度之间协调元的函数描述方法。

Based on the test results and numerical analysis, rigidity degradation rules and hysteretic rules are analyzed. A trilinear hysteretic model considering rigidity degradation is proposed for steel reinforced high strength and high performance concrete frame joints. The proposed restoring force model tallies with the test curves, which can be a good reference for seismic design of SRC structures.

3根据试验所得的滞回曲线和骨架曲线，分析节点的滞回规律及恢复力特性，提出了适合于型钢高强高性能混凝土框架节点的恢复力模型，为节点抗震性能研究和非线性地震反应时程分析提供科学的理论基础。

Folding bikes are bicycles with a lot of hinges and joints that can be folded up to trim the size of the bike.

折叠自行车是自行车的很多铰链和关节，可以折叠起来削减大小的自行车。

Some problems in the design of circular tubular joints are discussed in this paper.

本文探讨了圆管结构相贯节点设计中的若干问题。

Test study is the most important research method of ultimate strength of tubular joints.

试验研究是研究钢管节点承载力性能的最重要的方法。

Analysis on contact and connection behavior of casing thread joints shows that the performance of thread plays a important role on the connection between turnbuckle and steel rod.

通过对钢棒螺纹连接的接触有限元分析，发现螺牙性能对钢棒的连接性能有着重要的影响。

European woody-pased perennial with yellow umbellate flowers followed by flattened pods that separate into horseshoe-shaped joints.

欧洲的一种多年生植物，具有黄色伞形花，开花后产生分成马蹄形节的平豆荚。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。