Content tagged with "finite-element-method"
Results: 8
Article
April 15, 2008
Lubrication and galling in stamping of galvanized AHSS
Figure 1 Click to view image larger This B-pillar simulation model shows the geometries of the tool and the initial sheet blank. Editor's Note: This article is Part III of a three-part series discussing a study of lubrication and galling in forming of zinc-coated advanced high-strength... Read more...
Article
December 11, 2007
Dissecting defects - Part III
Real-time Process Control Figure 1 A commercially available optical measuring system can be used to obtain data on the deformation of a stamped component. Variations in incoming sheet material quality, tool temperatures, press and tool deflection, and lubricant performance result in... Read more...
Article
December 11, 2007
Dissecting defects
Part I categorizes defect types and discusses the factors that affect formed part quality; Part II covers various destructive and nondestructive tests for evaluating incoming material; and Part III is an introduction to process monitoring systems. Read more...
Article
November 6, 2007
Dissecting defects - Part II
Two major types of variation in incoming sheet coil are material properties and coil thickness. Various tests, both destructive and nondestructive, are used to determine these variations. Tensile Testing
Figure 1 At top is a cross-sectional schematic of a biaxial bulge test set... Read more...
Article
October 9, 2007
Dissecting defects - Part I
Figure 1 Many quality defects can occur in stamping.
Types of Quality Defects Two main types of defects typically occur in stamped automotive body components (see Figure 1 ):
Surface defects, such as cracks and necking
Form defects, such as fall-in, wrinkling, and marking... Read more...
Article
September 11, 2007
Blanking developments
Figure 1 Editor's Note: This is Part III of a three-part series on blanking developments. Part I, which appeared in the July issue, focused on fineblanking and tool design. Part II, which ran in the August issue, covered fineblanking part and process design guidelines. This column was... Read more...
Article
September 11, 2007
Blanking developments - Part III
Editor's Note: This is Part III of a three-part series on blanking developments. Part I focused on fineblanking and tool design. Part II covered fineblanking part and process design guidelines. This column was prepared by Serhat Kaya, of the Center for Precision Forming (CPF, formerly ERC... Read more...
Article
June 13, 2006
A closer look at self-piercing riveting
The current vehicle market demands structural weight reduction to decrease fuel consumption and to improve vehicle performance. As a result, automotive manufacturers are required to use aluminum alloys and other advanced materials, but the conventional joining methods, such as resistance spot... Read more...
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