formingDrawbeads are used to control the flow of sheet metal into the die cavity during stretch-draw forming of large panels. They prevent wrinkling in formed panels, reduce the blankholder force, and minimize the blank size needed to make a part. Drawbead restraining forces (pulling forces) ...
Drawbeads are used to control the flow of sheet metal into the die cavity during stretch-draw forming of large panels. They prevent wrinkling in formed panels, reduce the blankholder force, and minimize the blank size needed to make a part. Drawbead restraining forces (pulling forces) and fa...
An analytical model is developed to account for the bending/stretching process experienced by a metal sheet passing along a drawbead. The geometrical evolution of an elementary length of the sheet is described by the Love–Kirchhoff assumption. The material is assumed to be elastic–plastic, and ...
In sheet metal forming, drawbeads are commonly used to control uneven material flow, which may cause defects such as wrinkles, fractures, surface distortio... JH Jang,WT Kim,CJ Van Tyne,... - 《Steel Research International》 被引量: 6发表: 2007年 Comparing Study on Real Drawbead and Equ...
A new method of parametric modeling drawbead in real geometry is proposed. Comparing with equivalent drawbead model, the real geometry drawbead have more advantages in sheet metal forming simulation. To keep the conformity in size between the die mesh and blank mesh, a modified quadrilateral mesh...
1.The effect of drawbead dimension parameters on the reduction in thickness and DBRF;拉深筋结构参数对变形及阻力的影响 2.Process design and optimization of drawbead on autobody panel die;车身覆盖件模具的拉深筋工艺设计和优化 3.Tribotest at drawbead in aluminum alloy sheet warm forming;铝合金板...
Drawbeads are one of the most important means to contorl the material flow during a sheet metal formign operation.In the finite element simulation of industiral forming processes,os to speak simulified (or equivalent) drawbead mdoels are widely used.Usually ushc models are reduced to the restrai...
Kim, B.Y. Ghoo, Expert drawbead models for finite element analysis of sheet metal forming processes, Int. J. Solids Struct. 38 (2001) 5335-5353.Keum Y T,Kim J H,Ghoo B Y.Expert drawbead models for finite element analysis of sheet metal forming processes.International Journal of Solids...
In this analysis, the accuracy of springback prediction is presented for three different models, that is, withoutdraw beads, smoothdraw beads, and lockingdraw beads. An alternate method to springback compensation for sheet metal forming Die manufacturing engineers tip the surface into die position, ad...
Variable drawbead design, to control the flow of material at localized points What’s the impact of drawbeads on metal forming simulations? The size, shape, and depth of drawbeads may vary around the perimeter of a draw tool when there is localized control of the metal flow at a given po...