介绍了冷体积成形技术的原理、特点、研究现状和发展趋势；
The principle, characteristic, research status and development trend of cold accurate forming technology are introduced.
此文提出了适用于金属体积成形过程有限元模拟的约束处理算法。
A new method for the treatment of constraints in finite element simulation of metal forming is put forward.
运用一种基于全量理论的多步有限元方法计算分析了金属体积成形过程。
The bulk metal forming processes are calculated and analyzed by using a multi - step finite element method (FEM) based on deformation theory of plasticity.
运用一种基于全量理论的多步有限元方法计算分析了金属体积成形过程。
The Research on Adaptive Reproducing Kernel Particle Method in the Metal Forming Process;
金属体积成形预成形设计，是材料多工序成形工艺与模具设计的中心工作。
Preform design in bulk metal forming is the central task of bulk metal forming process and die design.
采用体积成形二维模拟软件分析了安全气囊壳体挤压成形中材料的流动规律。
Material flowing behavior of shell for air bag in extrusion are also analyzed by means of 2-d simulation software of volume deformation.
提出了解决目前问题的方法，并针对现状，提出了金属体积成形的虚拟试验体系模型；
Solutions to present problems and the model of metallic bulk forming virtual trial system are suggested;
从而为变形力、变形功与节省材料的角度优化设计体积成形工艺及模具找到了有效途经；
All above make it possible to optimize the bulk forming process and the die design in respect of decreasing forming force and saving material.
边界界面动态接触约束与接触判断是3维复杂体积成形有限元数值模拟的关键技术问题之一。
One of the key technique problems is boundary dynamic contact constraint and contact judgment in FEA simulation for 3d complicated massive forming.
并以筒形机匣精锻成形为例对金属体积形成过程进行了模拟，计算结果表明所提出的方法和软件系统是可靠的。
Meanwhile the processes of cylindrical housing have been simulated by the system, which indicate that the given techniques and software are feasible.
研究金属塑性成形规律的理论方法现在有主应力法、上限法、滑移线法、有限元法和有限体积法。
The basic theoretical methods such as Slab method, UBET, Slip Line method, FEM, and FVM have been used in the research of metal plastic forming technology.
针对半固态成形，特别是触变锻造成形中浆料流动前沿开裂等质量问题，首次提出了流动前沿等体积流量的概念，并将其运用到半固态成形模具优化设计中。
With an aim to solve the long-term existing problem of the cracks in flow-front during thixo-forging, a new theory of constant volume flux of slurry was put forward in optimizing die design.
一般认为将机械振动引入到金属的塑性成形加工中，不但可以降低材料变形时所需的外力，还能大幅度提高产品成形质量，这些效果的产生主要缘于体积效应的影响。
Volume effect is in the case of the plastic processing system with vibration, under this process the deformation resistance force of materials is reduced, and the deformation rate is risen.
多楔轮是目前生产中较难成形的一种旋压皮带轮，本文运用体积不变原理和刚性平移理论提出一种新的工艺方案。
Multi-V pulley spinning is more difficult than other pulley spinning, this paper presents a new process base on the same volume principle and the rigid translation theory.
研究了电磁成形大宽厚比板状件的感应加热特性，推导了电磁成形大宽厚比板状件单位体积感应加热功率公式。
The model of induction heating power for unit volume of plate-form part with big flakiness ratio was obtained.
该方法基于塑性增量理论，应用塑性成形过程的体积不变假设和弯曲过程的平截面假设。
The proposed method is based on the incremental theory, volume invariance and planar cross_section are assumed.
成形的豆腐体积大得惊人，难得的是它们极富韧性，几乎不会破损，少许的盐就可以最大程度地保鲜。
The finished product is shockingly big. But it's unusually tenacious. And it almost doesn't crumble. A dash of salt can best preserve the tofu's freshness.
试用结果表明，这种成形器具有成纸匀度好，纸张纵横向抗张强度比小的特点，而且结构简单、体积小、制作容易、费用低，因而是一种很好的圆网成形器。
Productive practice and study of lateral flow vat showed that the paper's tensile ratio of machine—direction to cross—direction can be easily adjusted by employing a flow velocity regulating board.
试用结果表明，这种成形器具有成纸匀度好，纸张纵横向抗张强度比小的特点，而且结构简单、体积小、制作容易、费用低，因而是一种很好的圆网成形器。
Productive practice and study of lateral flow vat showed that the paper's tensile ratio of machine—direction to cross—direction can be easily adjusted by employing a flow velocity regulating board.
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