Sensitivity study on some parameters in blank design

被引：11
|
作者：
Oliveira, M. C. [1 ]
Padmanabhan, R. [1 ]
Baptista, A. J. [1 ]
Alves, J. L. [2 ]
Menezes, L. F. [1 ]
机构：
[1] Univ Coimbra, Fac Sci & Technol, Ctr Engn Mecan, P-3030788 Coimbra, Portugal
[2] Univ Minho, Dept Mech Engn, Sch Engn, P-4800058 Guimaraes, Portugal
来源：
MATERIALS & DESIGN | 2009年 / 30卷 / 04期
关键词：
Sensitivity; Blank design; Optimization; FEM; DEEP-DRAWING PROCESS; NUMERICAL-SIMULATION;
D O I：
10.1016/j.matdes.2008.06.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sensitivity study on various numerical parameters is necessary for modeling a process. It is important to determine the influence of such parameters in order to achieve robust design. Initial blank shape is a process parameter that controls the quality of a formed part. This paper describes a blank shape optimization procedure that uses three numerical tools to determine an optimal blank shape for a formed part. Several numerical parameters that affect the optimization procedure for a deep drawn rectangular cup are analyzed. The focus is mainly on the influence of numerical parameters concerned with the use of NURBS surface in the optimization procedure. From the study, it is evident that the blank shape optimization procedure is sensitive to those numerical parameters. A significant influence of element size and optimization damping factor on achieving optimal blank shape is observed. The number of control points in the NURBS surface and the initial geometry have marginal influence on the optimization procedure. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1223 / 1230
页数：8
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