1-20 of 512 Search Results for

lubrication modeling

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 Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006385
EISBN: 978-1-62708-192-4
... and lubrication modeling of extrusion processes. The article also discusses the fundamentals of extrusion technology of titanium alloys and aluminum. It concludes with information on two forms of wear in extrusion, namely, adhesive and abrasive wear. aluminum defects deformation direct extrusion...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002474
EISBN: 978-1-62708-194-8
..., this is another way by which a lubricant can affect wear. Wear design methodology consists of four general activities: system analysis, model selection, data selection, and verification. In order to perform these activities successfully, it is necessary to have a basic understanding of wear behavior...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006421
EISBN: 978-1-62708-192-4
... on the improved capabilities of laser surface engineering for tribological applications by means of integrated computational process modeling. chemical cleanliness laser surface heating laser surface melting laser patterning laser dimpling laser-synthesized coatings lubricated environment...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
.... The first classification is based on the two-term model that divides wear mechanisms into interfacial and bulk or cohesive. The second is based on the perceived wear mechanism. The third classification is specific to polymers and draws the distinction based on mechanical properties of polymers...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006429
EISBN: 978-1-62708-192-4
.... 1 Limits of operation of hydraulic pumps. (1) Fluid film formation, (2) mechanical strength, (3) heat balance or life of rolling bearing, (4) cavitation The limits of lubrication of a bearing surface of the slippers have been modeled and the results are illustrated in Fig. 2 . Metal-metal...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... – 447 10.1080/10402009608983550 45. Bowman W.F. and Stachowiak G.W. , A Review of Scuffing Models , Tribol. Lett. , Vol 2 , 1996 , p 113 – 131 10.1007/BF00160970 46. Ludema K.C. , A Review of Scuffing and Running-In of Lubricated Surfaces, with Asperities...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006399
EISBN: 978-1-62708-192-4
...Abstract Abstract Tribology is the study of friction, lubrication, and wear. It is a multidisciplinary subject covering the mechanics of contacting surfaces, their roughness characteristics, lubrication, and material behavior under normal load as well as in traction. This article focuses...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006370
EISBN: 978-1-62708-192-4
... models are generally applicable only for dry contacts, they are often applied for lubricated conditions as well, mainly because of the difficulty in applying numerical approaches to estimate friction as described subsequently. In such cases, friction and heat transfer coefficients should be recognized...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005417
EISBN: 978-1-62708-196-2
... friction coefficient heat-transfer coefficient computer simulations oxide scales hot metal ring test thermomechanical processing KNOWLEDGE OF FRICTION AND HEAT TRANSFER is vital to the understanding and operation of metal forming. Modeling and numerical simulations are now extensively used...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006409
EISBN: 978-1-62708-192-4
.... The accuracy of these techniques does not only depend on the numerical accuracy. Today it is mainly the accuracy of the physics behind the models that is a limiting factor. Where quite reliable models have been developed for full-film lubrication, good models for boundary lubricated and dry systems are still...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006365
EISBN: 978-1-62708-192-4
..., that is, the lubrication regime, sliding speed, and contact pressure. Therefore, the aim of this article is to make an overview of available surface-texturing techniques, main texturing parameters, and their effect on tribological performance as well as modeling possibilities. Surface-Texturing Techniques Many...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003558
EISBN: 978-1-62708-180-1
... of mild and severe wear morphology. (a) A lubricated sliding wear scar on steel in the mild wear regime. (b) The appearance of the same type of scar in the severe wear regime Generally, by characterizing the wear situation in these manners, there is sufficient information to formulate a model...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006423
EISBN: 978-1-62708-192-4
... ): η = η 0 e β T and Tattersall proposed a model based on drawing speed expressed as ( Ref 37 ): η = η 0 e β v In general, the viscosity of solid lubricants is greater than the viscosity of liquid lubricants, which enables establishing hydrodynamic films at lower...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006397
EISBN: 978-1-62708-192-4
...Abstract Abstract This article begins with the basic concept of friction and with the general approaches that can be used to control or minimize it. It focuses on the factors influencing rolling friction: surface topography, composition, subsurface microstructure, and lubrication conditions...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006361
EISBN: 978-1-62708-192-4
... in a lubricated system is a function of the system conditions and the nature of the lubricant. Using this model, which appears to work for the case of plain bearings, lubricant properties rather than friction are measured. The most accepted model for determining the coefficient of friction between solid surfaces...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006393
EISBN: 978-1-62708-192-4
... surfaces interact (elastohydrodynamic lubrication film/composite roughness, because the lambda ratio is the primary model used). Temperature/speed Bulk conditions such as these control the concentrated contacts of a bearing. Load zone/alignment Factors impacting load and actual stress within all...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006380
EISBN: 978-1-62708-192-4
... of ASTM International’s Subcommittee G02.40, which is called “Non-Abrasive Wear” ( Ref 5 ). Despite such naming ambiguity, sliding wear and adhesive wear are historically linked because some of the models for sliding wear of metals were based on the formation and breakage of metallic junctions created...
Book Chapter

By P.H. Shipway
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006414
EISBN: 978-1-62708-192-4
... in the numerous interwire contacts, leading to both fretting wear and fretting fatigue ( Ref 9 ); results of studies of fretting damage in an aluminum power line under a vibration damper are given in Ref 10 . Most ropes include some form of internal lubrication to lessen the effects of such movement. Fatigue...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... contact can arise from asperity interlock, adhesion, or abrasion by debris trapped between the contacting surface and viscous drag of the lubricant. A qualitative model ( Ref 27 ) was presented to describe the microchipping wear mode in ceramic rollers. It is stated that microchipping cracks can form...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006410
EISBN: 978-1-62708-192-4
... mechanism of friction is applicable to a sliding pair of soft-soft and soft-hard materials. The definition of frictional force as the sum of adhesive force ( F a ) and ploughing force ( F p ) at asperity level on a surface is referred to as the “two-term model,” proposed by Amontons and Coulomb Bowden...