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Research on Auto Panel Surface Soft Defect Based on CAE

Author: JiangQingWei
Tutor: HuPing
School: Dalian University of Technology
Course: Computational Mechanics
Keywords: Numerical Simulation Auto cover Forming theory Stamping defects Soft surface
CLC: U463.82
Type: Master's thesis
Year: 2011
Downloads: 47
Quote: 0
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Abstract


With the continuous advancement of the level of automobile manufacturing , automotive panel forming quality has become increasingly car manufacturers seriously. Reduce and eliminate the forming defects , has great significance to improve the manufacturing level, and to accelerate the research and development of new models for optimizing mold design , has now become the focus of the automotive industry . Surface the soft defects is one of several major stamping defects . Therefore , the development of self- eliminate the soft surface defects function of sheet metal forming CAE software has a very important economic value . The traditional CAE software can only be provided by contour display rough defect prediction did not complete the qualitative and quantitative analysis , and can not provide a solution . In view of this , in order to expand the range of engineering applications of CAE simulation analysis software for CAE post-processing files , developed a sheet metal forming soft surface defect analysis module , the main research work are as follows : (1 ) generalized forming principle as the theoretical basis , combined with engineering the actual mainstream stamping the use of the software , developed a program for the analysis of the stampings soft surface defects . Forming combined the craft field experience to establish the generalized theory , a more accurate description of Stamping quality and shape accuracy , the results obtained are also more in line with the actual engineering . (2) Based on the COMX platform , according to the analysis program stampings soft surface defects , development stampings soft surface defect analysis module . According to the software development process , design the key algorithm for each process , interface design , and operational processes . The module can be soft surface defect analysis , analysis of defect causes and gives solutions meet the engineering needs . The mechanism features soft surface defects deformation and deformation uneven , by adjusting the amount of deformation and deformation uniformity of elimination of defects . ( 3 ) In a front door stamping simulation analysis was successfully applied to the module to solve the soft surface defects . And according to its given solution in DYNAFORM improve process parameters , eliminating the problem of potential defects . Through the comparison of the two results to verify the reliability of the module .

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Cab and body > Car body
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