By Hun Guo, Zuo Dunwen, Tang Guoxing
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Extra resources for Advanced Design and Manufacturing Technology I
The formed part is shown in Fig. 1. Parameter Setup and Finite Element Model. 10, punch speed is 5 m/s, stripper speed is 2 m/s, stripper force is 1000 KN. 4 mm, four sections have been captured from representative areas of part shown in Fig. 2, area 2 is the shape after resilience, area 1 is the shape before resilience. Fig. 1 Actual formed shape Fig. 2 Section distribution Analysis of Simulation Result In Fig. 3, line 1 indicates the section before resilience, line 2 means the section after resilience.
Repeat the process above until the scanning lines contain all the boundary pixels. If the scanning lines neither contain the boundary pixels nor the filled pixels, taking the extremely right pixel as seed pixel, pressing it in the stack and stopping the post-processing when the stack is empty. 1, 2, 3, 4, 5. The advantage of the Adaboost algorithm combined with region growing detecting method is that, target dividing, filtering and edge detecting can be carried on at the same time. What’s more, it can divide the target precisely to calibrate the centroid coordinate of moving target correctly.
G. 265-277.  Y. 360-367. cn Keywords: Spring back, numerical simulation, autobody panel’s edge, drawing Abstract. With the higher quality requirement of automotive assembly, the demand for forming precision of the stamping part gets higher. The simulation of resilience around the edge of drawn parts of autobody panels has become a hot spot of automotive field. Currently, the study on resilience mainly focused on the principle of resilience of bent parts and its relative control whereas the investigation on resilience of drawing process is quite less.