Accurate Prediction Approach of 3D Trimming Line for Auto Panel Part

It is difficult to obtain 3D trimming line using traditional prediction methods for auto panel parts. An initial geometrical development method with element layer is proposed based on one step inverse analysis theory for this problem. The flange mesh can be unfold onto the die surface layer by layer...

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Bibliographic Details
Published in:Key engineering materials 2013-01, Vol.535-536, p.235-238
Main Authors: Bao, Yi Dong, Sang, Yang, Wang, Hou Min
Format: Article
Language:English
Subjects:
Automobiles
Automotive engineering
Automotive industry
Finite element method
Inverse
Panels
Three dimensional
Trimming
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Summary:It is difficult to obtain 3D trimming line using traditional prediction methods for auto panel parts. An initial geometrical development method with element layer is proposed based on one step inverse analysis theory for this problem. The flange mesh can be unfold onto the die surface layer by layer according to nodal adjacent element relation, then the above development mesh is smoothed by mesh smoothing method with sliding constraint surface in order to delete overlap and distorted mesh, the 3D initial mesh can be obtained for one step inverse analysis method. The accurate 3D trimming line of auto panel part can be achieved by plasticity iteration of one step inverse analysis. A typical real part of 3D trimming line prediction is selected to prove this method, the comparison results between the simulated and experimental values show that this method has enough precision and can handle complex parts, satisfies the engineering practical demands.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.535-536.235