| 1. | Application of coordinate net analysis technology and forming limit diagram
坐标网分析技术与成形极限图的应用 |
| 2. | Fld sheet metal formability and test methods - forming limit diagram test
金属薄板成形性能与试验方法成形极限图 |
| 3. | Theory research on the maximum reduction of deep tine taper hole formed by open - die cold extrusion
深小锥孔挤压成形极限变形程度理论判据建立 |
| 4. | 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。 |
| 5. | It has been experimentally indicated that moderate wrinkling will make a contribution to enhancing the formability of tube hydroforming
实验结果表明，适度的起皱有助于提高薄壁管内高压成形的成形极限。 |
| 6. | To accurately predict forming limit , a criterion to reflect material performance in essence was indispensable besides increasing the fea model accuracy
为了准确地预测成形极限，除了提高有限元模拟精度外，应找到一种本质地反映材料性能的韧性断裂准则。 |
| 7. | 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。 |
| 8. | In the paper , the forming limits in hemispheric punch bulging processes of aluminum alloy ly12 ( m ) , lf21 and steel stl7 are predicted by the ductile fracture criterion and calculation method of material constant advanced by the author
本文应用作者提出的韧性断裂准则及材料常数的确定方法预测了铝合金板和钢板的半球形凸模胀形的成形极限。 |
| 9. | 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。 |
| 10. | 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。 |
