成形的

Through the analysis of the flowing character of metal injection molding, a set ofessential equations describing the flowing process of metal ring injection molding areestablished on the bases of the general principles of hydrodynamics and calorifics.

通过对金属粉末注射成形流动过程规律的分析，从流体力学和传热学的基本原理出发，建立了一组描述圆筒形金属粉末注射成形流动过程的基本微分方程，经过假设与简化，得到一组简化的控制方程，采用有限差分法求解了这组微分方程，得到温度场。

In the paper, study on displacement law of blank hole for forming cylindraceous with bottom border by numerical simulation technology.

通过数值仿真研究了带底孔的圆筒形件成形后底孔的变形规律，在此基础上建立了带底孔的圆筒形件成形后毛料中心孔变形规律的经验公式。

For internal high pressure forming of a hollow part with big difference on section perimeter, the problems of axial feeding and preforming are necessary to be solved to produce qualified parts with more uniform thickness distribution.

截面周长差较大的空心零件的内高压成形需要解决膨胀区的轴向补料问题和预成形问题，才能获得壁厚分布较为均匀的合格零件。

By studying the numerical simulation technology of sheet metal formation in recent decades,the article puts forward a method for redeveloping friction model of numerical simulation of sheet metal formation on the basis of ABAQUS.

对近年来兴起的板料成形过程数值模拟新技术研究，提出了一种基于ABAQUS的板料成形数值模拟摩擦模型的二次开发及实现的方法。

The basic principle is to use a series of rules with a high degree of adjustable basic body Based on the basic body of the real-time control, to construct the required shape forming face, replace the traditional mold of the plate to achieve rapid 3D-Forming.

其基本原理是利用一系列规则排列、高度可调的基本体，通过对各基本体的实时控制，构造出所需形状的成形面，取代传统的模具来实现板材的三维曲面快速无模成形。

Firstly, it introduces the structure and working principle of flour conveying and paste pipe molding frame , then analyzes the structure and working principle of stuffing conveying frame, finally discusses the structure and working principle of the dumpling-molding machine.

介绍了将面块加工成面管的输面与面管成形机构的结构及其工作原理；同时，分析了将饺子馅注入到面管中的输馅机构的结构及其工作原理，并对水饺成形机构的结构及其工作原理进行了论述。

This article studies the affection of the water ratio of the forage grass to the cube formation, forage density and production ratio.

在机具一定的情况下，以乌梁素海生长的水草为压块物料，进行饲草压块成形试验，着重研究饲草的含水率对草块成形情况、草块密度、生产率的影响。

There are many problems in the carling forming and unloading processes such as expand and shrink of U section wall, the torsion of U section and the warp of carling head.

针对纵梁冲压成形及卸载后发生的U型截面侧壁的外扩、内缩、扭转以及纵向端头翘曲等问题，首先分析了纵梁的成形及回弹变形机理，利用仿真分析软件KMAS进行了数值模拟并采用半解析、半实验方法研究了纵梁底面翘曲，找出模具结构的最佳方案。

There are many problems in the carling forming and unloading processes such as expand and shrink of U section wall, the torsion of U section and the warp of carling head. These problems are concerned by the carling factories and do not solved for a long time. The mechanism of the carling forming and spring back is analyzed. The carling forming and spring back processes are simulated by KMAS software. The warp of carling underside is researched by half analytic and half experiment method and the best scheme is found by this method.

针对纵梁冲压成形及卸载后发生的U型截面侧壁的外扩、内缩、扭转以及纵向端头翘曲等问题，首先分析了纵梁的成形及回弹变形机理，利用仿真分析软件KMAS进行了数值模拟并采用半解析、半实验方法研究了纵梁底面翘曲，找出模具结构的最佳方案。

Based on the preliminary study on LSF, this paper studied characteristics of laser shock forming in detail, analyzed primary factors which affect the deformation of sheet metal, measured distribution of residual stress in deformed sheet metal, and simulated the process of laser shock forming.

本文在激光冲击成形初步研究的基础上，系统研究了激光冲击下板料的变形特性、影响板料变形大小的主要因素、变形区残余应力的分布，最后利用有限元分析软件对激光冲击成形过程进行了模拟，对相关理论参数进行了修正。

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。