成形的

In this paper, detailed experiment was conducted on a model of cable dome with diameter of 4.8m, and the behaviors of model in the form finding process and subjected to nonsymmetrical loads are investigated.

本文通过对一直径为4.8m的Levy型索穹顶模型的成形与加载试验研究，得到了在成形过程中和不对称荷载作用下结构的内力和变形规律。

Unlike the regression analysis method,the implicit statistical inference ability of the multi-layer feedforward neural network provides a more pragmatistic way to establish the mapping relationship between the plastic deformation and the process parameters.

与传统的多元回归分析数据处理方式相比，多层前馈神经网络的隐式统计推理功能，对于建立成形结果与塑性成形工艺参数之间的内在映射关系，则更具有工程实用意义。

The properties of the work—material have a decisive influence on heat generation and tempe rature distribution in the compo nent.the changes in process conditions wi ll produce pronounced differences on the scale of temperature increases and distribution.

在成形加工中由于热膨胀和冷却的影响，工件和模具中温度的变化将影响工件的成形精度。

Metal matrix composites is a kind of rapidly developing and widely used ma terials,although some immanent problems,such as poor plasticity,difficulty of processing and lack of relevant research es are cumbering it's applications .

金属基复合材料的发展极为迅速，应用越来越广泛。但是，金属基复合材料的塑性差，成形困难，成形性能的相关研究较少，阻碍了其实际应用。

A drawing die,a trimming and piercing die and a flanging and restriking die for the precision shaping of the part were designed by using AutoCAD and UGII.

在详细分析车门内板结构及工艺特点的基础上，确定零件的成形工序，以AutoCAD及UGII为辅助工具，设计出车门内板成形所需的拉深模、修边冲孔模和翻边整形模，不仅保证了加工精度，同时也缩短了生产周期，降低了成本。

In this paper the rocket of 122mm, 20km is exampled, CADET is used in random ballistics system with the action of random wind by use of sharping filter when the differential equations of sharping filter and angle motion equations of ballistics are allied.

以某火箭弹为例，在随机风场作用下，利用纵风作用下的随机弹道系统成形滤波器，把成形滤波器的微分方程和外弹道角运动方程联立，对此系统采用协方差分析描述函数法，对火箭弹的散布进行了计算。

WM-Model is established based on the realy situation of SPIF process, but SM-mdoel is established throuth adding suppositional bundary conditions.

完整有限元分析模型是建立在对渐进成形过程边界条件、力学关系等的真实仿真基础上，而为了提高模拟效率建立的局部有限元分析模型，是通过添加虚拟的边界约束而仿真成形过程。

From the angle critical force ,this thesis analyses the stability of the formation of axle shaft spline in the extrusion and the calculation of the constraints available after losing stability.

从临界力的角度入手分析花键半轴在挤压成形时的稳定性及失稳后可增加约束的计算，研究表明半轴花键实现精密挤压成形不稳定时可增加约束来解决失稳问题。

It has successfully fulfilled for the first time the taper shaped connection shaft and hub hole with protruded cross-sectional contour and a clearance free fit is obtained, on a modified MAZAK lathe by using a new type of computer-controlled turning.

本文首次在改装的MAZAK机床上，实现了带锥度成形联接副的数控车削，试验得到的成形联接轴和孔很容易安装，做到无间隙配合。

By analysis of the deformation curves, it is proposed that the deformation curve of the work piece can be expressed approximately by a 2-order polynomial curve.

平板毛坯的电磁成形中，成形电压的确定是一个关键问题，它决定着工件变形的大小。

I bought a nice wrist watch as a surprise for my wife's birthday.

我买了一个漂亮的手表想要给我妻子的生日一个惊喜。

We don t expect students to be sponges. You can t expect to absorb everything and not have any questions to ask.

我们并不期待我们的学生是一块海绵，你没可能接收所有的东西而不提出任何问题。