Application of Triangular Mesh Morphing and Surface Reconstruction for Springback Compensation of Automobile Sheet Metal Die Face
Date Issued
2012
Date
2012
Author(s)
Lee, Meng-Chen
Abstract
Owing to the rising attention of environment and energy issues, weight reduction of automobile has become the top challenge for the automotive manufacturers. It can effectively reduce weight by replacing conventional steels with advanced high strength steels (AHSS) or light metal such as aluminum and magnesium alloys. Using these materials can reach the requirements of collision regulations; however, it has encountered a serious springback problem in sheet metal forming process. During the conventional die compensation process, it is not only increasing the time costs of die development process but also falling off in quality of die face. The improvement of computer hardware and operational efficiency can significantly reduce the execution time of computer aided engineering (CAE) software. With the simulation analysis of computer aided engineering and digital die face morphing and reconstruction, rapidly resolving the springback adjustment problem has become the major research priority for auto-making and mold industry.
In order to accelerate the construction of springback die face and reduce the time of die face design, this paper addresses a method of die face springback compensation adapted to automobile sheet metal based on surface reconstruction and triangular mesh morphing and segmentation. The proposed compensation scheme takes the original die face CAD and STL mesh files and the STL mesh file through die compensation as three input data and is composed of three major processes: adjustment of mesh model with parameters, segmentation of whole mesh data and surface reconstruction of each mesh patch. By proceeding the processes above, the reconstruction of die face springback compensation is fulfilled.
Subjects
triangular mesh
mesh morphing
springback compensation
surface reconstruction
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
index.html
Size
23.49 KB
Format
HTML
Checksum
(MD5):0dd638ee67dd9ceb92551006822914bc