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mechanical friction

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
.../9781439821893 • Myshkin N.K. et al. , Introduction to Tribology , Cheong Moon Gah , Seoul, South Korea , 1997 • Persson Bo N.J. , Sliding Friction: Physical Principles and Applications , Springer , Berlin, Germany , 1998 • Popov V.L. , Contact Mechanics and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780259
EISBN: 978-1-62708-281-5
... Abstract This article focuses on friction and wear as they relate to polymeric materials, covering friction and wear applications for polymeric materials. The discussion covers the causes and mechanisms of friction, wear, and lubrication; different test methods developed to simulate friction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the effect of friction and lubrication on forgings and forging operations. The discussion covers lubrication mechanisms, the use of friction laws, tooling and process parameters, and the lubrication requirements of specific materials and forging processes. The...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
... tribology of metal, ceramic, and polymer surfaces in contact. It also discusses the nature of rolling friction and provides helpful design guidelines. engineering design mechanical friction EVERY PUBLIC AREA in every public building in every country in the world probably has lawyers concerned...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350043
EISBN: 978-1-62708-315-7
... ,” Corrosion Testing Laboratories, Inc. , Newark, DE 7. Samuels L.E. et al. , Sliding Wear Mechanisms , Fundamentals of Friction and Wear of Materials , Rigney D.A. , Ed., American Society for Metals , 1981 , p 13 – 42 8. Bowden F.P. and Tabor D. , The Friction and...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.9781627083232
EISBN: 978-1-62708-323-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400089
EISBN: 978-1-62708-316-4
... force (BHF), and (b) punch speeds found in mechanical stamping presses. In deep drawing, the most severe friction usually takes place at the die shoulder and flange area, as shown in Figure 7.9 . The lubrication condition in the these areas influences (a) the thinning or possible failure of the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040083
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the role of inverse analysis in providing input data for finite element simulations of metal forming processes. It describes the basic procedures for determining flow stress and friction by inverse analysis and for comparing experimental measurements with...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290207
EISBN: 978-1-62708-306-5
... values for applying specific loads to the joint have been determined for many high-strength fasteners. However, these values should be used with caution, because the tension produced by a selected torque value depends directly on the friction between the contacting threads. With the proper selection of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610025
EISBN: 978-1-62708-303-4
.... However, the deformation shown in Fig. 1 is ideal because frictional forces develop at the two ends and cause barreling, as shown in Fig. 19 . During deformation, as the metal spreads over the compression anvils to increase its diameter, frictional forces oppose the outward flow of metal. This...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240201
EISBN: 978-1-62708-251-8
... workpiece under compressive loads. A compression test is conducted in a manner similar to the tensile test, except that the force is compressive, and the specimen contracts along the direction of the stress. However, the deformation shown in Fig. 12.1 is idealized; in reality, frictional forces develop at...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770199
EISBN: 978-1-62708-337-9
... friction increases. Therefore, much of the energy used in the grinding action is converted into heat, and this heat is dissipated by conduction into the workpiece, the coolant (if used), and the abrasive. The heat is also carried away in the detached incandescent metallic particles that are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230441
EISBN: 978-1-62708-298-3
... viscoelastic behavior. Some of the loading may be carried by friction between the joined members. Simple examples of mechanical fastener joints are shown in Fig. 24.9 and 24.10 , the latter figure illustrating some stress patterns. As in the case with adhesive joints, differences in the coefficient of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500289
EISBN: 978-1-62708-317-1
...-dimensional analysis has helped to define accurately the stresses in the SPR process. Other more elaborate models have been applied by several authors to study a number of phenomena: numerical modeling of SPR process parameters such as friction coefficients of the different interfaces and the value of kinetic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870351
EISBN: 978-1-62708-314-0
... they are tightened too much, the fixture will pick up some of the load due to friction. Torque values just above finger tight are recommended. Back-to-back strain gages are used for the modulus coupon but no gages are required for the strength coupon. Since two separate coupons are required, a full...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400145
EISBN: 978-1-62708-316-4
.... 10.12 remains below curve ABC), the process can be carried out, provided that the flywheel can supply the necessary energy per stroke. If the required load (KLM) exceeds the available load (ABC) before point B, then the friction clutch slides and the press slide stops before BDC and the flywheel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410405
EISBN: 978-1-62708-265-5
... lengths in a substructure ( Ref 18.29 ). The flow stress, τ, at a given strain is given by: (Eq 18.1) τ = τ 0 +  constant  × G b / l where τ 0 is the friction stress for dislocation motion in a crystal structure without other obstacles, G is the shear modulus, b is the Burgers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
... surface abrasion D 1708 6239 Tensile properties of plastics by use of microtensile specimens D 1822 8256 Tensile-impact energy to break plastics and electrical insulating materials D 1894 6601 Static and kinetic coefficients of friction of plastic film and sheeting D 1922 6383–2...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060049
EISBN: 978-1-62708-261-7
... relationship for yield strength, σ y , with grain size is given as: (Eq 3.7) σ y = σ i + k d − 1 / 2 where σ i is an intrinsic grain lattice friction stress, k is taken as a material constant, and d is the average grain diameter. Thus, kd -1/2 may be...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610263
EISBN: 978-1-62708-303-4
... of mechanically fastened joints are clamping force, grip length, type of fastener, fastener material, fastener pattern, tension-shear ratio, tension-bearing ratio, and the type of materials being joined. Typically, the fatigue resistance of high-strength friction-bolted joints is superior to that...