1-20 of 49 Search Results for

springback analysis

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... Abstract This chapter discusses the use of modeling and simulation technology in the development of sheet metal forming processes. It describes the five major steps involved in finite-element analysis and the various ways functions of interest can be approximated at each point or node...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500019
EISBN: 978-1-62708-317-1
... of springback. The variables used in the analysis of bending mechanics are shown in Fig. 2.3 , where M is the constant bending moment, t is the sheet thickness, θ is the bending angle, R i is the inner bending radius, w is the width of the sheet, R o is the outer bending radius, R m...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
... Abstract Hot stamping is a forming process for ultrahigh-strength steels (UHSS) that maximizes formability while minimizing springback. This chapter covers several aspects of hot stamping, including the methods used, the effect of process variables, and the role of finite-element analysis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500107
EISBN: 978-1-62708-317-1
... the cause of springback and explains how to predict and compensating for its effects. advanced high-strength steel automotive sheet steels bending flanging flow stress springback stretching INCREASED REQUIREMENTS for vehicle safety and weight reduction in automotive design led...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060101
EISBN: 978-1-62708-355-3
... 8 Fig. 4 Forming limit diagram including shear fracture. Source: Ref 14 Fig. 5 Springback of a beam in simple bending. (a) Elastic bending. (b) Elastic and plastic bending. (c) Bending and stretching Fig. 6 Sheet tensile test specimen Abstract Sheet metal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700225
EISBN: 978-1-62708-279-2
... to stamping inconsistencies or even failure. High-strength steel and AHSS are less formable than mild steel, and parts made from them lack dimensional control because of the significant amount of springback that they produce after forming. The increased use of AHSS to achieve weight reduction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500273
EISBN: 978-1-62708-317-1
... Tools A solid forming tool with a hemispherical head is generally used for ISF ( Fig. 13.6 ). The tool radius has considerable effects on the process. It influences the surface quality, forming limits, and springback. If the part contains features with small radii, a forming tool with a matching...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500211
EISBN: 978-1-62708-317-1
... the bending radius is always smaller than the one in the constant arc length method, except for the last pass, this method is more appropriate for reducing springback. Three different bending sequences regarding flower patterns are widely accepted for tube production in relevant industrial applications...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400001
EISBN: 978-1-62708-316-4
... are large, so that tooling costs per unit product can be kept low—for example, in automotive or appliance applications; and (b) the part properties and metallurgical integrity are extremely important, in examples such as load-carrying aircraft and jet engine and turbine components. The design, analysis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... and reduced scrap rate Reduce impact speed and noise Improve edge quality in blanking and shearing and increase tool life Reduce springback and improve part dimensions by controlling the dwell time at the BDC (bottom dead center) of the slide stroke Allow assembly and other secondary operations...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500179
EISBN: 978-1-62708-317-1
... and stiffness via optimized section geometry Lower tooling costs due to fewer parts Fewer secondary operations (less welding and punching of holes during hydroforming) Tighter tolerances and reduced springback, both of which facilitate assembly Reduced scrap, because trimming of excess material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040237
EISBN: 978-1-62708-300-3
... finite-element analysis friction process modeling 18.1 Introduction The finite-element method (FEM) is one of the numerical techniques used for solving differential equations governing engineering problems. This method has been applied to various engineering processes, including metal forming...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500227
EISBN: 978-1-62708-317-1
... and springback effects and the possibility to use inertia locking mechanisms in the tool design, allowing the use of smaller-capacity presses. Furthermore, due to the short forming time, the process can be considered to be adiabatic and the forming heat can be used more efficiently for deformation than...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400053
EISBN: 978-1-62708-316-4
... deformations. In metal forming, elastic strains are smaller by several orders of magnitude than plastic strains. Yet, in case of sheet metal forming, they are still very significant since they are the reason for the springback. 5.1 General State of Stress A typical sheet forming process, deep drawing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400233
EISBN: 978-1-62708-316-4
... the lower die and coins or sets the material to eliminate springback. bottoming blocks Adjustable blocks mounted under a pad to determine the proper height of the pad when the die is closed. See also stop blocks. bottoming stamp A stamp or weld mark used in a form die to signify that the die...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.9781627083164
EISBN: 978-1-62708-316-4
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500073
EISBN: 978-1-62708-317-1
... Abstract This chapter presents two case studies; one demonstrating the use of finite-element analysis (FEA) in the design of a progressive die forming operation, the other explaining how software simulations helped engineers reduce thinning and eliminate cracking and deformation observed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400027
EISBN: 978-1-62708-316-4
... In sheet metal forming, the elastic strain, ε el , is much smaller than the plastic strain, ε pl , so we can usually neglect the elastic strains in describing the plastic deformation unless springback is considered. Elastic strains are in the order of 10 –4 , whereas plastic strains can be in the order...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740163
EISBN: 978-1-62708-308-9
... IF steel. Hexagonal close-packed crystalline metals are usually hot formed. Although some hcp alloys can be cold formed, hot forming greatly improves formability, reduces springback, and eliminates the need for stress relief. However, the requirement to hot form increases the cost due to having to heat...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040017
EISBN: 978-1-62708-300-3
... 3.1 Introduction The purpose of applying the plasticity theory in metal forming is to investigate the mechanics of plastic deformation in metal forming processes. Such investigation allows the analysis and prediction of (a) metal flow (velocities, strain rates, and strains), (b) temperatures...