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Probing Constitutive Models of Bohus Granite with In Situ Spherical Indentation and Digital Volume Correlation
https://orcid.org/0000-0001-5553-0066
Abstract Spherical indentation of granite was investigated using Digital Volume Correlation (DVC) aiming at probing constitutive laws of the studied rock. In situ indentation was performed within an X-ray tomograph. Finite element simulations of the problem, using different constitutive models, were carried out and their trustworthiness was assessed thanks to DVC residuals. Three laws were investigated, namely, pure elasticity, then compressible elastoplasticity, and finally compressible elastoplasticity coupled with damage. Frictional contact effects were studied as well. The results show that compressible elastoplasticity should be accounted for to achieve high accuracy of results, and that frictional effects are of importance in terms of damage extent. If macrocrack initiation is also sought, then damage features should be included in the model.
Highlights Spherical indentation of granite was investigated using Digital Volume Correlation.Different constitutive laws were probed and their trustworthiness assessed thanks to registration residuals.Compressible elastoplasticity is to be accounted for to obtain faithful results.Frictional effects are of importance in terms of damage extent. Macrocrack initiation was described with a damage model.
Probing Constitutive Models of Bohus Granite with In Situ Spherical Indentation and Digital Volume Correlation
https://orcid.org/0000-0001-5553-0066
Abstract Spherical indentation of granite was investigated using Digital Volume Correlation (DVC) aiming at probing constitutive laws of the studied rock. In situ indentation was performed within an X-ray tomograph. Finite element simulations of the problem, using different constitutive models, were carried out and their trustworthiness was assessed thanks to DVC residuals. Three laws were investigated, namely, pure elasticity, then compressible elastoplasticity, and finally compressible elastoplasticity coupled with damage. Frictional contact effects were studied as well. The results show that compressible elastoplasticity should be accounted for to achieve high accuracy of results, and that frictional effects are of importance in terms of damage extent. If macrocrack initiation is also sought, then damage features should be included in the model.
Highlights Spherical indentation of granite was investigated using Digital Volume Correlation.Different constitutive laws were probed and their trustworthiness assessed thanks to registration residuals.Compressible elastoplasticity is to be accounted for to obtain faithful results.Frictional effects are of importance in terms of damage extent. Macrocrack initiation was described with a damage model.
Probing Constitutive Models of Bohus Granite with In Situ Spherical Indentation and Digital Volume Correlation
https://orcid.org/0000-0001-5553-0066
Abstract Spherical indentation of granite was investigated using Digital Volume Correlation (DVC) aiming at probing constitutive laws of the studied rock. In situ indentation was performed within an X-ray tomograph. Finite element simulations of the problem, using different constitutive models, were carried out and their trustworthiness was assessed thanks to DVC residuals. Three laws were investigated, namely, pure elasticity, then compressible elastoplasticity, and finally compressible elastoplasticity coupled with damage. Frictional contact effects were studied as well. The results show that compressible elastoplasticity should be accounted for to achieve high accuracy of results, and that frictional effects are of importance in terms of damage extent. If macrocrack initiation is also sought, then damage features should be included in the model.
Highlights Spherical indentation of granite was investigated using Digital Volume Correlation.Different constitutive laws were probed and their trustworthiness assessed thanks to registration residuals.Compressible elastoplasticity is to be accounted for to obtain faithful results.Frictional effects are of importance in terms of damage extent. Macrocrack initiation was described with a damage model.
Probing Constitutive Models of Bohus Granite with In Situ Spherical Indentation and Digital Volume Correlation
Shariati, H. (author) / Bouterf, A. (author) / Saadati, M. (author) / Larsson, P.-L. (author) / Hild, F. (author)
2022
Article (Journal)
Electronic Resource
English
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
The relation between the uniaxial tensile strength and the sample size for bohus granite
| Springer Verlag | 1978
| British Library Online Contents | 2004
The relation between the uniaxial tensile strength and the sample size for bohus granite
| Springer Verlag | 1978
Determining constitutive models from conical indentation: Sensitivity analysis
| British Library Online Contents | 2003