Influence of sample slenderness and boundary conditions in triaxial test – a review

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

In the past decades an extensive work was done in order to improve the performance and increase the reliability of triaxial testing. Among the several changes made in order to solve the inaccuracies of the traditional test configuration, two of them are discussed in this paper: the sample slenderness (in other words, the H/D ratio) and the introduction of smooth end platens instead of the rough ones. By using H/D=1 and not the usual H/D=2 ratio, the formation of a single line-rapture and the bulge shape seem prevented. The smooth ends decrease the restrain at the top and bottom of the sample. From a theoretical point of view the effects of these changes are clear, but experimentally, the results coming from various studies are contradictory. The purpose of this paper is to elucidate the previous findings on the topic, including both laboratory and FEM modelling test programs.
Original languageEnglish
Title of host publication7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
EditorsAlessandro Tarantino, Erdin Ibraim
PublisherEDP Sciences
Publication date2019
Article number02009
Publication statusPublished - 2019
SeriesE3S Web of Conferences
Volume92
ISSN2267-1242

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Boundary conditions
Finite element method
Computer simulation
Testing

Cite this

Peri, E., Nielsen, B. V. N., & Ibsen, L. B. (2019). Influence of sample slenderness and boundary conditions in triaxial test – a review. In A. Tarantino, & E. Ibraim (Eds.), 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 [02009] EDP Sciences. E3S Web of Conferences, Vol.. 92
Peri, Elena ; Nielsen, Benjamin Vagn Nordahl ; Ibsen, Lars Bo. / Influence of sample slenderness and boundary conditions in triaxial test – a review. 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019. editor / Alessandro Tarantino ; Erdin Ibraim. EDP Sciences, 2019. (E3S Web of Conferences, Vol. 92).
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Peri, E, Nielsen, BVN & Ibsen, LB 2019, Influence of sample slenderness and boundary conditions in triaxial test – a review. in A Tarantino & E Ibraim (eds), 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019., 02009, EDP Sciences, E3S Web of Conferences, vol. 92.

Influence of sample slenderness and boundary conditions in triaxial test – a review. / Peri, Elena; Nielsen, Benjamin Vagn Nordahl; Ibsen, Lars Bo.

7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019. ed. / Alessandro Tarantino; Erdin Ibraim. EDP Sciences, 2019. 02009 (E3S Web of Conferences, Vol. 92).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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AU - Nielsen, Benjamin Vagn Nordahl

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AB - In the past decades an extensive work was done in order to improve the performance and increase the reliability of triaxial testing. Among the several changes made in order to solve the inaccuracies of the traditional test configuration, two of them are discussed in this paper: the sample slenderness (in other words, the H/D ratio) and the introduction of smooth end platens instead of the rough ones. By using H/D=1 and not the usual H/D=2 ratio, the formation of a single line-rapture and the bulge shape seem prevented. The smooth ends decrease the restrain at the top and bottom of the sample. From a theoretical point of view the effects of these changes are clear, but experimentally, the results coming from various studies are contradictory. The purpose of this paper is to elucidate the previous findings on the topic, including both laboratory and FEM modelling test programs.

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A2 - Tarantino, Alessandro

A2 - Ibraim, Erdin

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Peri E, Nielsen BVN, Ibsen LB. Influence of sample slenderness and boundary conditions in triaxial test – a review. In Tarantino A, Ibraim E, editors, 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019. EDP Sciences. 2019. 02009. (E3S Web of Conferences, Vol. 92).