成形的

In order to reduce the cost more and accelerate the application in the civil area, the laser rapid forming technology with low cost hydrogenation dehydrogenization titanium alloy powders had been investigated, and the following results were obtained:1 Disclosed the formation mechanisms and influencing factors of t.

为进一步降低该技术的成本，促进其在民用领域的发展，本文针对低成本氢化脱氢(hydrogenmiondehydrogenization，HDH)钛合金粉末的激光快速成形进行研究，取得的主要成果如下： 1。从粉末特性及成形工艺角度揭示了缺陷的形成机理及影响因素，结果发现：(1)气孔的产生是由于粉末在成形过程中卷入成形气氛中的氩气所致。

The objective of processing technology for cambered cam isothermal extrusion forming is net-shape and near-net shape. Using MSC.

弧面凸轮等温挤压成形是以净成形和近净成形为目标的加工技术。

Add additional features to the forming tool such as extrudes, reoles, fillets, chamfers, and so on, to shape the forming tool.

给成形工具添加额外的特征，如拉伸、旋转、圆角、倒角等等，以将成形工具成形。

MARC. And also the influence on final thickness distribution of surface friction of preforming die and forming die was analyzed.

MARC有限元模拟研究了不同形状的预成形模对深筒形件侧壁厚度分布的影响，并分析了预成形模和终成形模的表面摩擦系数分别对成形件壁厚分布的影响，提出了模具型面变摩擦控制厚度分布的方法。

Computer aided engineering for sheet forming is an applied technique which puts the technique of numerical simulation of sheet forming in the core, and syncretizes all kinds technique such as CAD, CG and CAM. It supplies a powerful tool for die design and optimizing of sheet forming technics, such that CAE for sheet forming becomes the one of front research direction of forming technique in the world, and has large advancing potential.

板料成形计算机辅助工程是一个以基于有限元计算的板料成形数值模拟技术为核心，融合CAD、CG、CAM等各类技术于一体的应用技术，它为模具的研制和成形过程的优化提供了一个强有力的工具，是当前国际上成形技术研究的最前沿方向之一，并具有巨大的发展潜力。

A metal mold for tire formation that realizes not only enhancing of evacuation efficiency at the time of tire vulcanization molding but also enhancing of the durability thereof; a plug for use in vent hole of such a metal mold for tire formation; and a tire manufactured with the use of the metal mold for tire formation.

本发明提供能够提高轮胎硫化成形时的排气效率、并且能够提高耐久性的轮胎成形用模具、轮胎成形用模具的通气孔所使用的塞子以及使用该轮胎成形用模具制造的轮胎。

The objective of this study was to analyze the square cup stretching process by using the dynamic explicit finite element analytical program, which was based on the Updated Lagrangian Formulation and elasto-plastic theory. Simulation results included the deformation and crack propagation history, the variation of the work piece thickness, the Forming Limit Diagram, and the relationship between punch load and punch stroke. A set of tools was designed for the square-cup stretching experiment to verify the reliability of the program.

中文摘要本文采用显性动态有限元素法，结合材料弹塑性理论，发展出一套三维增量型之有限元素分析程式，进行金属板材方杯拉伸成形制程及破裂之分析，并探讨方杯拉伸成形历程及裂纹成长历程、工件厚度变化、成形极限图(Forming Limit Diagram， FLD)，及冲头负荷与冲程关系，并设计一组方形冲模来进行方杯拉伸成形实验，以验证程式的可信度。

As one of key problems urgent to be resolved in the fields of mechanics, material science and sheet metal forming, constructing reasonable yield criterion, work-hardening law and stress-strain relationship is very important for predicting distribution of stress and strain in sheet metal forming, as well as for improving FEA simulation precision and resolving engineering problems.

各向异性板料的屈服准则、塑性变形强化规律以及应力应变关系的合理建立，对于准确预测板料成形过程中应力应变分布，提高板料成形有限元模拟精度，以及精确解析板料成形工程问题等方面具有重要的意义，这一基础性的研究一直是力学界、材料界、板料成形领域致力研究的关键问题。

In recent years, numerical simulation technology has been widely used to analyze problems of wrinkle, fracture, et al. during the forming of sheet metals, which lays foundations for obtaining FLD via numerical simulation.

近年来板材成形中开始广泛使用数值模拟技术来分析板材成形中的起皱、破裂等问题，为数值模拟获得成形极限图奠定了基础。

However, such defect as crack, pore, oxidation and ill bonding between cladding layers might appear in RLF parts if the process parameters controlled improperly. And crack was a kind of defect, which was the most familiar and companied with the largest brisance.

但是，如果成形条件控制不当，易于在成形件中产生裂纹、气孔、夹杂、层间结合不良等缺陷，而裂纹是成形过程中最常见、破坏性最大的一种缺陷。

The good news is that after formatting from the command line to FAT32 (format /fs:fat32 /a:4096 drive:) all but one of the problematic games that I tested work perfectly.

好消息是，从指挥线后格式化了FAT32(格式/曾荫权：了FAT32/答：4096年径：)所有问题，但其中的游戏测试工作，我很好。

In Amsterdam. He is a Dutch painter, draftsman, and etcher of the 17th century, the greatest artist of the Dutch school, a master of light and shadow whose paintings, drawings, and etchings made him a giant in the history of art.

伦勃朗是一位17世纪画家、绘图家、版画家，荷兰学派的最伟大艺术家，他的明暗法的大师，他的绘画、素描和版画使他成为一位艺术史上的巨匠，其画作体裁广泛，擅长肖像画、风景画、风俗画、宗教画、历史画等。