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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500019
EISBN: 978-1-62708-317-1
... Abstract This chapter begins with a review of the mechanics of bending and the primary elements of a bending system. It examines stress-strain distributions defined by elementary bending theory and explains how to predict stress, strain, bending moment, and springback under various bending...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500107
EISBN: 978-1-62708-317-1
... deformation processes such as stretching, bending, flanging, deep drawing, and blanking. It then describes the complex tribology of AHSS forming operations, the role of lubrication, the effect of tool steels and coatings, and the force and energy requirements of various forming presses. It also discusses the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400005
EISBN: 978-1-62708-316-4
... Abstract This chapter provides a concise, design-oriented summary of more than 30 sheet forming processes within the categories of bending and flanging, stretch forming, deep drawing, blank preparation, and incremental and hybrid forming. Each summary includes a description and diagram of the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
..., progressive die sequencing, blank holder force optimization, sheet hydroforming, hot stamping, and springback and bending of advanced high-strength steels. It also discusses the factors that affect the accuracy of finite element simulations such as springback, thickness variations, and nonisothermal effects...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500179
EISBN: 978-1-62708-317-1
... chapter discusses the basic methods of tube hydroforming and the underlying process mechanics. It explains how to determine if a material is a viable candidate and whether it can withstand preforming or bending operations. It describes critical process parameters, such as interface pressure, surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500211
EISBN: 978-1-62708-317-1
.... It explains how to determine strip width and bending sequences and identifies the cause of common roll-forming defects. It also discusses the selection of roll materials and explains how software helps simplify the design of roll forming lines. forming equipment roll forming IN ITS...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500083
EISBN: 978-1-62708-317-1
... dimensional allowances on the punch and die, which will affect the part geometry ( Ref 5.13 ). The minimum bending radius noticeably decreases with increasing forming temperature. Table 5.4 provides design guidelines for the minimum bending radii of AZ31-O/H24 alloy sheets (thickness: 0.51 to 6.3 mm, or...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500073
EISBN: 978-1-62708-317-1
... external radius. Flanging alone results in relatively large radii and sometimes in excessive thinning at the bend, as seen in Fig. 4.15 . Upsetting of the flanged wall is necessary to have a flat surface near the flanged corner where fastening bolts are located. Fig. 4.14 Three stages in the...
Book Chapter

By Soumya Subramonian
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500001
EISBN: 978-1-62708-317-1
... distribution in the workpiece during blanking. Source: Ref 1.2 The distribution of those compressive forces is nonuniform. The distance, l , between the forces F V and F V ′ causes a bending moment that either bends or tilts the workpiece. This moment must be compensated for by a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500273
EISBN: 978-1-62708-317-1
... and still the subject of current research. Questions of scientific interest include: Why does ISF show extended forming limits compared to traditional forming limit diagrams? What is the predominant deformation mechanism: stretching, shear, or bending? What can be done to reduce sheet...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500157
EISBN: 978-1-62708-317-1
... 9.2 ft, with part depth 400 mm, or 16 in.). The second and third presses in the line are link-servo presses used for subsequent trimming and bending (up to 800 ton capacity each). This forming system, used in combination with a quick die-change mechanism, was used for production of numerous body...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500227
EISBN: 978-1-62708-317-1
... International Conference on High Speed Forming, ICHSF 2008 ( Dortmund, Germany ), 2008 , p 201 – 212 11.75 Psyk V. , Beerwald C. , Homberg W. , Kleiner M. , Beerwald M. , and Henselek A. , Investigation of the Process Chain Bending-Electromagnetic Compression...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500249
EISBN: 978-1-62708-317-1
... a highly curved tool path may lead to this failure mode. Radial Cracks: These cracks are initiated by previous wrinkles in the flange that are initiated by tangential compressive stress. The subsequent forming passes can lead to further bending of those wrinkles instead of flattening the sheet...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500289
EISBN: 978-1-62708-317-1
... the fluid (6). The rivet (3) is positioned on the surface of the parts (4). In steps B and C, the punch (1) presses the spreading rivet (3) into the sheets. The high-pressure fluid (6) prevents excessive bending of the hydroformed sheet (5). To the axial movement of the punch, a wobble movement can be...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500301
EISBN: 978-1-62708-317-1
... force measured (tensile, compressive, bending, shear), and cost are some of the factors that determine the type of the load cell to be used. Load cells typically work under compressive load conditions but are also used to measure tensile, bending, and shear forces. Apart from strain gage (electrical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500317
EISBN: 978-1-62708-317-1
... is biaxial, and the sheet material undergoes thinning, thickening, and bending. All of these operations may change the surface texture, which cannot be emulated by strip reduction tests ( Ref 16.62 ). Forming tests are designed to emulate the actual state of deformation in sheet metal forming...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.9781627083171
EISBN: 978-1-62708-317-1
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240279
EISBN: 978-1-62708-251-8
... metal forming processes, blanking and piercing, bending, stretch forming, drawing, rubber pad forming, and superplastic forming. hot working cold working bulk deformation rolling forging extrusion sheet metal forming blanking piercing bending stretch forming drawing rubber pad forming...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140253
EISBN: 978-1-62708-335-5
... Abstract This data set contains the results of rotating-beam reversed-bending fatigue tests for a wide range of aluminum casting alloys. These fatigue curves are the results of tests on individual lots of material considered representative of the respective alloys and tempers. aluminum...