Cyclic stress-strain response of porous aluminum

Han C. Wu, Paul T. Wang, Wen-Fung Pan, Z. Y. Xu

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

A model of endochronic constitutive theory is applied to the analysis of stress-strain behavior of sintered high purity aluminum powder-based material (P/M) under uniaxial strain-controlled cyclic test conditions. Different strain amplitudes were used on specimens which during fabrication were subjected to cold isostatic pressure of 25 ksi. It was found that mean strain does not significantly affect the fatigue life. It was also discovered that Poisson's ratio at the peak tensile strain decreases gradually with the number of loading cycles, while it reaches a constant value at the peak compressive strain as the number of cycles increases. Results provide a comparison between theory and experiment for both hydrostatic and deviatoric stress-strain behavior for several cases of peak strains in the strain-controlled test. Reasonable agreement has been achieved. The changing trends of the peak volumetric strain, deviatoric stress, hydrostatic stress and Poisson's ratio versus loading cycles are also reported for each case.

Original languageEnglish
Pages (from-to)207-230
Number of pages24
JournalInternational Journal of Plasticity
Volume6
Issue number2
DOIs
Publication statusPublished - 1990 Jan 1

Fingerprint

Aluminum
Poisson ratio
Tensile strain
Powders
Fatigue of materials
Fabrication

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Wu, Han C. ; Wang, Paul T. ; Pan, Wen-Fung ; Xu, Z. Y. / Cyclic stress-strain response of porous aluminum. In: International Journal of Plasticity. 1990 ; Vol. 6, No. 2. pp. 207-230.
@article{1344166580054de6897eb99759cf9e1a,
title = "Cyclic stress-strain response of porous aluminum",
abstract = "A model of endochronic constitutive theory is applied to the analysis of stress-strain behavior of sintered high purity aluminum powder-based material (P/M) under uniaxial strain-controlled cyclic test conditions. Different strain amplitudes were used on specimens which during fabrication were subjected to cold isostatic pressure of 25 ksi. It was found that mean strain does not significantly affect the fatigue life. It was also discovered that Poisson's ratio at the peak tensile strain decreases gradually with the number of loading cycles, while it reaches a constant value at the peak compressive strain as the number of cycles increases. Results provide a comparison between theory and experiment for both hydrostatic and deviatoric stress-strain behavior for several cases of peak strains in the strain-controlled test. Reasonable agreement has been achieved. The changing trends of the peak volumetric strain, deviatoric stress, hydrostatic stress and Poisson's ratio versus loading cycles are also reported for each case.",
author = "Wu, {Han C.} and Wang, {Paul T.} and Wen-Fung Pan and Xu, {Z. Y.}",
year = "1990",
month = "1",
day = "1",
doi = "10.1016/0749-6419(90)90022-7",
language = "English",
volume = "6",
pages = "207--230",
journal = "International Journal of Plasticity",
issn = "0749-6419",
publisher = "Elsevier Limited",
number = "2",

}

Cyclic stress-strain response of porous aluminum. / Wu, Han C.; Wang, Paul T.; Pan, Wen-Fung; Xu, Z. Y.

In: International Journal of Plasticity, Vol. 6, No. 2, 01.01.1990, p. 207-230.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Cyclic stress-strain response of porous aluminum

AU - Wu, Han C.

AU - Wang, Paul T.

AU - Pan, Wen-Fung

AU - Xu, Z. Y.

PY - 1990/1/1

Y1 - 1990/1/1

N2 - A model of endochronic constitutive theory is applied to the analysis of stress-strain behavior of sintered high purity aluminum powder-based material (P/M) under uniaxial strain-controlled cyclic test conditions. Different strain amplitudes were used on specimens which during fabrication were subjected to cold isostatic pressure of 25 ksi. It was found that mean strain does not significantly affect the fatigue life. It was also discovered that Poisson's ratio at the peak tensile strain decreases gradually with the number of loading cycles, while it reaches a constant value at the peak compressive strain as the number of cycles increases. Results provide a comparison between theory and experiment for both hydrostatic and deviatoric stress-strain behavior for several cases of peak strains in the strain-controlled test. Reasonable agreement has been achieved. The changing trends of the peak volumetric strain, deviatoric stress, hydrostatic stress and Poisson's ratio versus loading cycles are also reported for each case.

AB - A model of endochronic constitutive theory is applied to the analysis of stress-strain behavior of sintered high purity aluminum powder-based material (P/M) under uniaxial strain-controlled cyclic test conditions. Different strain amplitudes were used on specimens which during fabrication were subjected to cold isostatic pressure of 25 ksi. It was found that mean strain does not significantly affect the fatigue life. It was also discovered that Poisson's ratio at the peak tensile strain decreases gradually with the number of loading cycles, while it reaches a constant value at the peak compressive strain as the number of cycles increases. Results provide a comparison between theory and experiment for both hydrostatic and deviatoric stress-strain behavior for several cases of peak strains in the strain-controlled test. Reasonable agreement has been achieved. The changing trends of the peak volumetric strain, deviatoric stress, hydrostatic stress and Poisson's ratio versus loading cycles are also reported for each case.

UR - http://www.scopus.com/inward/record.url?scp=0025256303&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025256303&partnerID=8YFLogxK

U2 - 10.1016/0749-6419(90)90022-7

DO - 10.1016/0749-6419(90)90022-7

M3 - Article

VL - 6

SP - 207

EP - 230

JO - International Journal of Plasticity

JF - International Journal of Plasticity

SN - 0749-6419

IS - 2

ER -