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sheet bulging

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Published: 01 January 2006
Fig. 6 Flow stress as a function of (a) plastic work or (b) plastic strain for an aluminum alloy 6111-T4 sheet sample measured in balanced biaxial tension (bulge test) and uniaxial tension for directions at every 15° from the rolling direction. (c) Fit of Voce law to bulge-test data over two More
Image
Published: 01 January 2006
Fig. 4 Alloy A-286 exhaust cone that cracked in bulge forming, and the two layouts used in cutting the cone blank from 1.0 to 1.3 mm (0.04 to 0.05 in.) thick sheet More
Image
Published: 01 January 2006
Fig. 23 Experimentally observed thickness profiles for a hemispherical dome formed from materials with two different m -values (solid lines). The smaller, broken outlines confined mainly within the experimental data silhouette represent bulge profiles (1) and sheet thickness distributions (2 More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005154
EISBN: 978-1-62708-186-3
... forming. Sheet-metal bulging with a spherical roller is considered in Ref 2 , Ref 3 , Ref 4 , Ref 5 , hammering in Ref 6 and 7 , spinning in Ref 8 and 9 , peen forming in Ref 10 , and bulging with an elastic tool in Ref 11 . Incremental forming of sheet metal with a single-point tool...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003265
EISBN: 978-1-62708-176-4
..., which leads to barreling or bulging of the cylindrical surface. Under these circumstances, for L / D ratios on the order of 2.0, a double barrel forms, as shown in Fig. 1(c) , smaller L / D ratios lead to a single barrel, as in Fig. 1(d) . Barreling indicates that the deformation is nonuniform...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005145
EISBN: 978-1-62708-186-3
... the forming characteristics of iron-base alloy A-286 (UNS S66286). Fig. 3 Effect of forming direction relative to rolling direction on the formability of alloy 41 sheet 0.5 to 4.75 mm (0.02 to 0.187 in.) thick in press-brake bending Example 2: Effect of Directionality in Bulging A-286...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006527
EISBN: 978-1-62708-207-5
... that can occur without splitting. The article reviews various bending methods, such as draw, compression, ram and press, roll, and stretch or tension bending. It describes the process variations of incremental sheet forming (ISF), such as single-point incremental forming, two-point incremental forming...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009154
EISBN: 978-1-62708-186-3
... with the hydroforming tool (2) and the fluid (5). During calibration, the hydroformed sheet (4) is pressed through a hole in the part to be attached (3). The punch (1) is withdrawn to avoid bursting and to ensure a higher forming level at the produced bulge in the sheet. Subsequently, the punch is set toward...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005168
EISBN: 978-1-62708-186-3
... parameter to measure for sheet material characterization. This stress can be obtained by conducting a hydraulic bulge test ( Ref 58 ). Figure 2 shows a schematic diagram of this test in which a sheet blank is clamped between a die with a large circular opening and a holder. A pressure, p , is gradually...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009153
EISBN: 978-1-62708-186-3
... as in the Nakajima test. The difference between the Nakajima test and ISF lies in the moving tool. In ISF, the forming tool imposes a small, moving bulge on the sheet and creates a groove as it is dragged over the sheet metal. The moving bulge generates in-plane strain gradients in front of it, coupled with in-plane...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005149
EISBN: 978-1-62708-186-3
... for a wide range of forming operations. Other commercially important intrinsic tests are the plane-strain tension test, the Marciniak stretching and sheet torsion tests, the hydraulic bulge test, the Miyauchi shear test, and hardness tests. Simulative Tests Simulative tests provide limited...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005100
EISBN: 978-1-62708-186-3
... processes Table 1 Classification of sheet metal forming processes Bending and straight flanging  Brake bending  Roll bending Surface contouring of sheet  Contour stretch forming (stretch forming)  Androforming  Age forming  Creep forming  Die-quench forming  Bulging...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005124
EISBN: 978-1-62708-186-3
.... bulging punches deep drawing Demarest process flexible-die forming fluid cell forming fluid forming gasket Guerin process hydrobuckling hydroform process marform process presses pressure control rubber diaphragm rubber pad forming rubber-die flanging SAAB process trapped-rubber process...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003322
EISBN: 978-1-62708-176-4
... Abstract Forming processes can be divided into three major categories: bulk forming, sheet-metal forming, and semisolid forming and polymer extrusion. This article introduces each process category with a description of the constitutive models. It outlines the required properties for process...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009152
EISBN: 978-1-62708-186-3
... sensors, photoelectric sensors, and ultrasonic sensors. The article provides information on the sensors used for detecting tool breakages and flaws in parts, the measurement of material flow during sheet metal forming, and lubrication. It also describes the operating stages of machine vision systems used...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005181
EISBN: 978-1-62708-186-3
... yield function Yld2000-2d for plane-stress deformation of sheet material. It also contains formulas related to flat (sheet) rolling, conical-die extrusion, wire drawing, bending, and deep drawing of cups from sheet metal. arbitrary coordinates Barlat's anisotropic yield function compression...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005595
EISBN: 978-1-62708-174-0
... with the metal sheets that are to be welded, inducing eddy currents in them in the opposite direction of the ones in the coil. Finally, the interaction of the eddy currents with the magnetic field generates Lorentz forces ( F ) on the work sheets that drive them away from the coil and toward each other...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005147
EISBN: 978-1-62708-186-3
... Abstract This article discusses many of the processes and related considerations involved in the forming of superplastic sheet metal parts. It reviews the requirements for superplasticity and describes the characteristics of superplastic metals. The characterization of superplastic behavior...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.9781627081856
EISBN: 978-1-62708-185-6
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004031
EISBN: 978-1-62708-185-6
... by a Demarest process. A uid forming process in billet or preform when it contacts dies that are die radius. The radius on the exposed edge of a which cylindrical and conical sheet metal maintained at a lower temperature. deep-drawing die, over which the sheet ows parts are formed by a modi ed rubber bulging...