该词条未找到_海词词典

您要查找的是不是：

The forming limit of 3A21 Aluminum alloy sheet was tested and the forming limit diagram (FLD) was determined. 通过标准成形极限实验获得3A21铝合金板材的成形极限图(FLD)；
Forming Limit curves(FLCS) are constructed by two different kinds of shrinking methods in the paper. 用两种不同的双拉成形技术获取成形极限曲线。
Then,it was dissertated that the essentiality and applied outlook of the stress-based forming limit diagram(FLSD). 介绍了基于应力的成形极限判据(成形极限应力图)的应用前景;
Then this paper pointed out that DFC could predict the forming limit of metal sheet with low plasticity well and meantime take the change of forming path into account. 指出利用韧性断裂准则，不但能够较好地预测塑性差的板料成形极限，而且还能考虑应变路径的变化。
Comparison with experimental values shows that the present approach can predict the forming limit in bulging over a wide range of sheet metals. 与实验结果比较表明，该方法能在较宽的材料范围内预测胀形成形极限。
To predict the forming limit in sheet metal forming, a ductile fracture criterion is introduced into the finite element simulation. 摘要为了准确地预测板料成形极限，将韧性断裂准则引入到有限元模拟中。
It puts forward calculation theory of forming limit of monolayer tube and multiplayer tube bulge, and fetches calculation formulae of forming limit. 本文采用成形极限理论和失稳理论对单层管及双层、三层复合管胀形成形的成形极限进行了理论研究，提出了单层管与复合管胀形破裂成形极限的计算理论，推导了极限应变及极限胀形系数的计算公式。
The mandrel(including flexible balls) is the key to improving the forming limit and forming precision in thin-walled tube NC bending process. 薄壁管数控弯曲中带芯头的柔性芯模是提高薄壁管件成形极限和成形精度的关键因素。
Plastic unstability induced by localized necking in sheet metal forming process and forming limit analysis are reviewed. 简要地评述了金属薄板成型工艺中局部化颈缩引起的塑性失稳机制和成型极限分析的成果;
The mechanical properties and forming limit diagram(FLD) are measured and the microstructure of different rolling state is analysed. 测定了该钢的力学性能和成形极限图(FLD),分析了不同轧态的微观组织。
Appropriate blank shape can eliminate unevenness of blank deformation, improve forming limit, reduce high of earing and volume of cutting. 如果板料形状合适,不仅变形沿板料分布不均匀的现象能够得到明显改善,而且成形极限也可有所提高,并能降低突耳高度,减少切边余量。
The practice of tube bulge shows that the choice of loading route and forming limit of tube is important to the shape and quality of produce. 胀形生产实践表明，加载路径的选择和管坯的成形极限对管件成形及成形质量有着重要影响。
Some applications of plastic unstability criteria on forming limit analysis and related computer simulations are discussed. 讨论了多种塑性失稳判据在成型极限分析的实验和有限元模拟两方面的应用及其局限性;
In this paper, with the help of theory of forming limit and plasticity failure, the forming limit of a thin claded tube in bulge forming is analyzed. 采用成形极限理论及塑性失稳理论,将单层管胀形成形极限理论推广到复合管,对复合管胀形成形极限进行了分析。
The simulation result compares well with the experimental result The FLSD is able to predict the forming limit of tube hydroforming with remarkable accuracy. 模拟结果与物理实验结果相吻合，证明FLSD可作为管材内高压成形等复杂应变路径下成形极限的判据。
Zhou, Y. and K.W.Neale,“Prediction of Forming Limit Diagrams Using a Rate-sensitive Crystal Plasticity Model”, Int.J.Mech.Sci., Vol.37, pp.1-20, 1995. 庄伟伦，“应用有限元素法于板金成形极限之模拟分析”，硕士论文，成功大学机械工程研究所，1990年。
This paper overviewed the prediction methods of forming limit in sheet metal forming, which included forming limit stress diagram, the maximum forming thinning ratio, forming limit diagram and ductile fracture criteria(DFC). 摘要对板料成形中的成形极限应力图、最大变薄率、成形极限图以及韧性断裂准则等预测成形极限的方法，进行了综述和分析。
The thickness varies according to the half-apex angle, and the forming limit half-apex angle is the key which NC incremental sheet metal parts forming process succeeds, it relates to the material and thickness of the sheet metal. 变形区厚度的变化与成形半顶角有关，其中，成形极限半顶角是数控渐进成形能否成功的关键，它不仅与材料有关，而且与板料厚度有关。
The paint is sold in powdered form. 该油漆以粉制品形式出售。
Abstract The influence factors, such as grid size, evaluating phase and evaluating position,in determination of forming limit curves (FLCs) were researched by dynamic strain determination method. 摘要采用动态应变测量方法对成形极限曲线（FLC）检测中网格的大小，测量的时机(破裂前或破裂后测量)，测量的位置等因素进行了试验研究。