,adidas online shop Auto cover flange concave arc simulation and control of deformation Significant improvement. Plane when the straight flange arc zone from shear stress, shear stress when the concave flange is concave arc as a result of,adidas schuhe, so use a smaller flange contour curvature is also generated along the arc is not only lighter. Target star _K chewing fierce King Gui Figure 12 flange radius Ro of the arc not only shun the impact of Fig. 12EffectofRoonunevenflangingarris3.6 friction coefficient. Plant impact on the arc not only shun / values ​​were 0.08,0.1,0.125,0.14,0.16,0.18,0.2 miD_. Figure 13 shows that with increasing _ plants, not only along the arc has been reduced. Larger friction can have a greater pull on the stock to reduce wrinkling. The amount of bang bun imprison | Figure 13 the friction coefficient, the impact of the arc not only shun Fig. 13Effectoffonunevenflangingarris Based on the above law and with the actual conditions, one or several control parameters to avoid arc not only shun or reduce its extent. From the perspective geometry, concave-type flange contour is caused not just the arc along the primary factor, so in need of some non-functional parts as not designed or designed concave curvature of the arc-type arc smaller. Although increasing the fixed mold radius to a certain extent, improve the arc not only shun, but its size depends on the size of parts radius,adidas climacool hose, generally can not be changed. Parameters from the process perspective, the gap by reducing the flange,adidas la trainer, the flange height and a smaller radius to reduce the dynamic model arc not only shun, but also can increase the tools and sheet metal friction. Practice to adjust the flange gap is the most convenient and effective. Improve the state of the mold, the mold binder to improve the surface accuracy, and ensure a better fit of the can to some extent,adidas climacool chill, not only along the arc to reduce the external surface of the expansion part. Appropriate action in reducing actual production scheduled to die clearance, die radius and flange fixed height or raise the mold surface accuracy can be improved to some extent,adidas climacool schuhe, not only along the arc phenomenon,adidas neo, indicating the correctness of simulation results. 4 Conclusion Analysis of Automotive board recessed flange parts of the geometric characteristics of the arc that happens, including not only along the concave flanging processes. Established a finite element model of flange computer simulation,adidas climacool, has been part of the stress distribution. The results show that the weekly circular area by the formation of the shear stress is not only along the arc of reasons, lack of constraint arc area is a condition defects. Increasing the flange contour radius, scheduled to die fillet radius, die and the friction between the sheet metal, or reduce the flange height, move set and die clearance, dynamic model will help reduce the radius of the arc not only shun the degree. References: [1] WangCT, GaryKinzelu, TaylanAltan. Failureandwrink-lingcriteriaandmathematicalmodelingofshrinkandstretchflangingoperationsinsheet-metalforming [J]. JournalofMaterialsProcessingTechnology, 1995, (53) :759-780. [2] LIU Zhi-yun, Hecheng Hong, Guo-Tai Yang, et al. Outer edge of the outer flange of the stress strain curve analysis l_J]. Plasticity Engineering, 2004, ll (2) :32-35. [3] LIU Zhi-yun, Hecheng Hong, Guo-Tai Yang, et al. Outer edge of the flange within the song when the stress and strain analysis [J3. Forging equipment and manufacturing technology, 2003, (4) :28-31. [4] Da-Yong Li, Luo Bing, Yin Jilong, and so on. V-stretch flanging analytical and numerical study EJ3. Materials Science and Technology, 2004,12 (5) :497-500. [5] Liu Tiancong. Flange forming parts of the common defects and correction method LJ]. Mold Technology, 2000, (4) :70-73. [6] Yi Shao Ting. Flanging processes problems and solutions [J]. Mold industry, 1979, (2) :114-116. [7] Cui that river. Automotive Stamping Technology [M]. Beijing: Mechanical Industry Press, 2003. [8] LiCF, YangYY, LiShuoben. Deformationanalysisanddie-designprinciplesinshrink-curvedflanging [J]. JournalofMaterialsProcessingTechnology, 1995, (51) :164-170 相关的主题文章： so that prints and other quality elements are carried out to determine by measurement of cell nodes ramI7.4l7.4I7 · 41l7-4l