A unified correlation model describing global properties at elastoplastic sharp indentation contact

Olsson, Erik; Larsson, Per Lennart

doi:10.1016/j.triboint.2016.07.005

Cited by 3 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the present choice of material parameters, strain-hardening becomes very high at increasing values of n but if the material parameters were adjusted in order to achieve more practically reasonable strain-hardening g(n) would be much closer to 1 also at n > 0.2 or 0.25, cf. [23,27] (in particular Figure 9 in [27]), and this matter will not be investigated further. With the separability of the problem now established it remains to investigate the functional form of f (α) in Equation ( 16).…”

Section: Resultsmentioning

confidence: 99%

Correlation of Global Quantities at Material Characterization of Pressure-Sensitive Materials Using Sharp Indentation Testing

2021

Self Cite

View full text Add to dashboard Cite

Correlation of sharp indentation problems is examined theoretically and numerically. The analysis focuses on elastic-plastic pressure-sensitive materials and especially the case when the local plastic zone is so large that elastic effects on the mean contact pressure will be small or negligible as is the case for engineering metals and alloys. The results from the theoretical analysis indicate that the effect from pressure-sensitivity and plastic strain-hardening are separable at correlation of hardness values. This is confirmed using finite element methods and closed-form formulas are presented representing a pressure-sensitive counterpart to the Tabor formula at von Mises plasticity. The situation for the relative contact area is more complicated as also discussed.

show abstract

Section: Resultsmentioning

confidence: 99%

Correlation of Global Quantities at Material Characterization of Pressure-Sensitive Materials Using Sharp Indentation Testing

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Besides this main assumption, many efforts have been done to consider the effect of permanent deformation. Early studies were mainly focused on the elastic/elastoplastic behavior of isotropic materials [2,3]. The same concept was also extrapolated to the analysis of anisotropic and orthotropic materials [4,5].…”

Section: Introductionmentioning

confidence: 99%

Indentation Measurement in Thin Plates under Bending Using 3D Digital Image Correlation

et al. 2021

View full text Add to dashboard Cite

In the current paper, a novel experimental methodology to characterize the contact behavior on thin plates under bending is presented. The method is based on the experimental measurement of the indentation observed during contact experiments. Tests were conducted using aluminum thin plates and a steel sphere to evaluate the effect of thickness and bending during contact. For this purpose, a non-contact optical technique, 3D Digital Image Correlation (3D-DIC), has been employed to measure the out-of-plane displacements experienced at the rear face of the specimens (opposite where the contact is occurring). An indirect measurement of the experimental contact law is obtained for different plate thicknesses (2 mm, 3 mm, 4 mm, 5 mm and 6 mm) as the contact load increases. An energy balance performed during contact experiments made it possible to evaluate and quantify the applied energy to generate bending and contact deformation. When the specimen thickness increases from 2 mm to 6 mm, contact deformation reaches higher values from the total applied energy. In addition, it is also possible to evaluate the portion of the elastically recovered energy for contact and bending deformation during the unloading. It has been observed that thicker specimens show a lower elastic energy recovery due to bending and a higher elastic energy recovery due to contact. Results clearly show how the ratio between absorbed and applied energy changes as the specimen thickness increases, highlighting the relevance of the proposed method for the characterization of contact behavior in thin plates.

show abstract

Nanoindentation behaviors of the AlCoCrFeNi2.1 eutectic high-entropy alloy: The effects of crystal structures

Zhang,

Huang,

Wang

et al. 2024

Journal of Alloys and Compounds

View full text Add to dashboard Cite

A unified correlation model describing global properties at elastoplastic sharp indentation contact

Cited by 3 publications

References 19 publications

Correlation of Global Quantities at Material Characterization of Pressure-Sensitive Materials Using Sharp Indentation Testing

Correlation of Global Quantities at Material Characterization of Pressure-Sensitive Materials Using Sharp Indentation Testing

Indentation Measurement in Thin Plates under Bending Using 3D Digital Image Correlation

Nanoindentation behaviors of the AlCoCrFeNi2.1 eutectic high-entropy alloy: The effects of crystal structures

Contact Info

Product

Resources

About