The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformation

Maximilian Zwicker; Jon Spangenberg; Niels Bay; Paulo A.F. Martins; Chris Valentin Nielsen

doi:10.1016/j.jmatprotec.2023.117919

The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformation

Maximilian Zwicker^*, Jon Spangenberg, Niels Bay, Paulo A.F. Martins, Chris Valentin Nielsen

^*Corresponding author for this work

University of Lisbon

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

The influence of the bulk modulus of metal forming lubricants on their load-carrying capacity during model asperity flattening under bi-axial subsurface deformation was experimentally and numerically studied. The experimental results showed that lubricants with different bulk moduli do not change the asperity flattening noticeably when subsurface deformation occurs. Numerical simulations revealed that a substantial change could only be obtained by very low theoretical bulk moduli. If the bulk modulus remains the same and material strength varies instead, it is seen that harder materials experience more flattening than the softer ones when being compared at the same strain.

Original language	English
Article number	117919
Journal	Journal of Materials Processing Technology
Volume	315
Number of pages	9
ISSN	0924-0136
DOIs	https://doi.org/10.1016/j.jmatprotec.2023.117919
Publication status	Published - 2023

Keywords

Friction
Asperity flattening
Hydrostatic pressure build-up
Lubrication

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title = "The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformation",

abstract = "The influence of the bulk modulus of metal forming lubricants on their load-carrying capacity during model asperity flattening under bi-axial subsurface deformation was experimentally and numerically studied. The experimental results showed that lubricants with different bulk moduli do not change the asperity flattening noticeably when subsurface deformation occurs. Numerical simulations revealed that a substantial change could only be obtained by very low theoretical bulk moduli. If the bulk modulus remains the same and material strength varies instead, it is seen that harder materials experience more flattening than the softer ones when being compared at the same strain.",

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author = "Maximilian Zwicker and Jon Spangenberg and Niels Bay and Martins, {Paulo A.F.} and Nielsen, {Chris Valentin}",

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T1 - The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformation

AU - Zwicker, Maximilian

AU - Spangenberg, Jon

AU - Bay, Niels

AU - Martins, Paulo A.F.

AU - Nielsen, Chris Valentin

PY - 2023

Y1 - 2023

N2 - The influence of the bulk modulus of metal forming lubricants on their load-carrying capacity during model asperity flattening under bi-axial subsurface deformation was experimentally and numerically studied. The experimental results showed that lubricants with different bulk moduli do not change the asperity flattening noticeably when subsurface deformation occurs. Numerical simulations revealed that a substantial change could only be obtained by very low theoretical bulk moduli. If the bulk modulus remains the same and material strength varies instead, it is seen that harder materials experience more flattening than the softer ones when being compared at the same strain.

AB - The influence of the bulk modulus of metal forming lubricants on their load-carrying capacity during model asperity flattening under bi-axial subsurface deformation was experimentally and numerically studied. The experimental results showed that lubricants with different bulk moduli do not change the asperity flattening noticeably when subsurface deformation occurs. Numerical simulations revealed that a substantial change could only be obtained by very low theoretical bulk moduli. If the bulk modulus remains the same and material strength varies instead, it is seen that harder materials experience more flattening than the softer ones when being compared at the same strain.

KW - Friction

KW - Asperity flattening

KW - Hydrostatic pressure build-up

KW - Lubrication

U2 - 10.1016/j.jmatprotec.2023.117919

DO - 10.1016/j.jmatprotec.2023.117919

M3 - Journal article

SN - 0924-0136

VL - 315

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

M1 - 117919

ER -

The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformation

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Keywords

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