Topology optimization of die weight reduction for high-strength sheet metal stamping

2012 ◽  
Vol 59 (1) ◽  
pp. 73-82 ◽  
Author(s):  
Dongkai Xu ◽  
Jun Chen ◽  
Yucheng Tang ◽  
Jian Cao
Keyword(s):  
Topology Optimization ◽  
Sheet Metal ◽  
Weight Reduction ◽  
High Strength ◽  
Sheet Metal Stamping ◽  
Metal Stamping

An Engineering Approach to Improve the Stamping Robustness of High Strength Steels

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
Wu-rong Wang ◽  
Bo Hou ◽  
Zhong-qin Lin ◽  
Z. Cedric Xia
Keyword(s):  
Sheet Metal ◽  
Weight Ratio ◽  
High Strength Steels ◽  
High Strength ◽  
Process Variations ◽  
Optimal Process ◽  
Sheet Metal Stamping ◽  
The Monte Carlo Method ◽  
Metal Stamping ◽  
Metal Properties

High strength steels (HSSs) are one of the light-weight sheet metals well suited for reducing vehicle weight due to their higher strength-to-weight ratio. However, HSS tend to have bigger variations in their mechanical properties due to more complex rolling techniques involved in the steel-making process. Such uncertainties, when combined with variations in the process parameters such as friction and blank holder force, pose a significant challenge in maintaining the robustness of HSS sheet metal stamping. The paper presents a systematic and robust approach, combining the power of the finite element method and stochastic statistics to decrease the sensitivity of HSS stamping in the presence of above-mentioned uncertainties. First, the statistical distribution of sheet metal properties of selected HSS is characterized from a material sampling database. Then a separate interval adaptive response surface methodology (RSM) is applied in modeling sheet metal stamping. The new method significantly improves the model accuracy when compared with the conventional RSM within a single interval. Finally, the Monte Carlo method is employed to simulate the stochastic response of material/process variations to stamping quality and to provide optimal process parameter designs to reduce the sensitivity of these effects. The experiment with the obtained optimal process design demonstrates the improvements of stamping robustness using small-batch experiments.

Optimisation of Die Radius Geometry in Sheet Metal Stamping

2011 ◽  
Vol 337 ◽  
pp. 350-353 ◽  
Author(s):  
Xuan Zhi Wang ◽  
S.H. Masood
Keyword(s):  
Tool Wear ◽  
Sheet Metal ◽  
High Strength Steels ◽  
High Strength ◽  
Sheet Metal Stamping ◽  
Advanced High Strength Steels ◽  
Metal Stamping ◽  
Contact Pressures ◽  
Abaqus Software

Advanced high strength steels (AHSS) are increasingly utilised in sheet metal stamping in the automotive manufacture. In comparison with conventional steels, AHSS stampings produce higher contact pressures at the interface between the tool-workpiece interface, leading to more severe wear conditions, particularly at the draw die radius. To minimise tool wear using this approach it would be necessary to optimise the shape for a particular combination of circular and high elliptical profiles. This paper presents a methodology to optimise a die radius profile. For this, a specialised software routine is developed and compiled for optimisation of die radius profiles to minimise or achieve uniform contact pressure (wear distribution) using Python computer programming language supported by Abaqus software. A detailed algorithm for the optimisation is explained. A case study based on the algorithm is also discussed.

A Study on Tool Wear of Sheet Metal Stamping Die Using Numerical Method

2010 ◽  
Vol 654-656 ◽  
pp. 346-349
Author(s):  
Xuan Zhi Wang ◽  
Syed H. Masood
Keyword(s):  
Tool Wear ◽  
Sheet Metal ◽  
High Strength Steels ◽  
High Strength ◽  
Control Parameters ◽  
Sheet Metal Stamping ◽  
Advanced High Strength Steels ◽  
Stamping Die ◽  
Metal Stamping ◽  
Metal Blank

Advanced high strength steels (AHSS) are increasingly used in sheet metal stamping in the automotive industry. In comparison with conventional steels, advanced high strength steel (AHSS) stampings produce higher contact pressures at the interface between draw die and sheet metal blank, resulting in more severe wear conditions, particularly at the draw die radius. The prediction of tool wear patterns for sheet metal stamping die is a highly challenging task as there are many control parameters involved in the production. This paper presents a numerical simulation methodology to analyse the influences of various control parameters on tool wear patterns of a sheet metal stamping die with different die radius arc profiles. The results of tool wear patterns provide informative guidelines for on-site production.

The Structure and Mechanical Properties of Aluminum Cellular Metal With Periodic Cubic Cells

2016 ◽  
Author(s):  
Xiaobing Dang ◽  
Ruxu Du ◽  
Kai He ◽  
Qiyang Zuo
Keyword(s):  
Mechanical Properties ◽  
Relative Density ◽  
Sheet Metal ◽  
Light Weight ◽  
Practical Applications ◽  
Sheet Metal Stamping ◽  
High Stiffness ◽  
The Past ◽  
Cellular Metal ◽  
Metal Stamping

As a light-weight material with high stiffness and strength, cellular metal has attracted a lot of attentions in the past two decades. In this paper, the structure and mechanical properties of aluminum cellular metal with periodic cubic cells are studied. The aluminum cellular metal is fabricated by sheet metal stamping and simple adhesion. Two sizes of specimens with cell sizes of 3mm and 5mm are fabricated. Their relative density and mechanical properties are tested by means of experiments. The results show that the cubic-cell cellular metal has high and predictable strength and hence, can be used for many practical applications.

On the use of SLS Tools in Sheet Metal Stamping

CIRP Annals ◽  
2003 ◽  
Vol 52 (1) ◽  
pp. 249-252 ◽  
Author(s):  
G.N. Levy ◽  
R. Schindel ◽  
P. Schleiss ◽  
F. Micari ◽  
L. Fratini
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Stamping ◽  
Metal Stamping

Sliding distance, contact pressure and wear in sheet metal stamping

Wear ◽  
2010 ◽  
Vol 268 (11-12) ◽  
pp. 1275-1284 ◽  
Author(s):  
Michael P. Pereira ◽  
Wenyi Yan ◽  
Bernard F. Rolfe
Keyword(s):  
Contact Pressure ◽  
Sheet Metal ◽  
Sheet Metal Stamping ◽  
Metal Stamping ◽  
Sliding Distance

A study on the computer-aided measuring integration system for the sheet metal stamping die

2006 ◽  
Vol 177 (1-3) ◽  
pp. 138-141 ◽  
Author(s):  
Chen-Hua She ◽  
Chun-Cheng Chang ◽  
Yung-Chou Kao ◽  
Hsin-Yu Cheng
Keyword(s):  
Sheet Metal ◽  
Integration System ◽  
Sheet Metal Stamping ◽  
Stamping Die ◽  
Metal Stamping ◽  
Computer Aided
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