A simple approach to multi-degree-of-freedom loading in a geotechnical centrifuge

Conleth D. O'Loughlin, Michael L. Cocjin, Susan M. Gourvenec, Sam A. Stanier

Research output: Contribution to journalArticle

Abstract

This article considers an alternative approach for multiplanar loading and multi-degree-of-freedom movement in geotechnical centrifuge model tests. The multi-degree-of-freedom loading system allows for vertical load control on the vertical axis and either displacement or load control on the two horizontal axes, while allowing rotation about these axes. The system is described in detail, and the system performance is validated through results from a centrifuge test comparing observed results with analytical and numerical solutions. The validation of the system considers a mudmat foundation under large amplitude lateral displacement, where two displacement degrees-of-freedom and two rotational degrees-of-freedom were of interest. However, the apparatus is versatile and can be used for testing other foundation types or pipelines, with up to six degrees-of-freedom.

Original languageEnglish
Article numberGTJ20180037
Pages (from-to)1150-1168
JournalGeotechnical Testing Journal
Volume42
Issue number5
DOIs
Publication statusPublished - 1 Sep 2019

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Centrifuges
centrifuge
Displacement control
Degrees of freedom (mechanics)
Pipelines
Testing
model test
freedom

Cite this

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title = "A simple approach to multi-degree-of-freedom loading in a geotechnical centrifuge",
abstract = "This article considers an alternative approach for multiplanar loading and multi-degree-of-freedom movement in geotechnical centrifuge model tests. The multi-degree-of-freedom loading system allows for vertical load control on the vertical axis and either displacement or load control on the two horizontal axes, while allowing rotation about these axes. The system is described in detail, and the system performance is validated through results from a centrifuge test comparing observed results with analytical and numerical solutions. The validation of the system considers a mudmat foundation under large amplitude lateral displacement, where two displacement degrees-of-freedom and two rotational degrees-of-freedom were of interest. However, the apparatus is versatile and can be used for testing other foundation types or pipelines, with up to six degrees-of-freedom.",
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A simple approach to multi-degree-of-freedom loading in a geotechnical centrifuge. / O'Loughlin, Conleth D.; Cocjin, Michael L.; Gourvenec, Susan M.; Stanier, Sam A.

In: Geotechnical Testing Journal, Vol. 42, No. 5, GTJ20180037, 01.09.2019, p. 1150-1168.

Research output: Contribution to journalArticle

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T1 - A simple approach to multi-degree-of-freedom loading in a geotechnical centrifuge

AU - O'Loughlin, Conleth D.

AU - Cocjin, Michael L.

AU - Gourvenec, Susan M.

AU - Stanier, Sam A.

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AB - This article considers an alternative approach for multiplanar loading and multi-degree-of-freedom movement in geotechnical centrifuge model tests. The multi-degree-of-freedom loading system allows for vertical load control on the vertical axis and either displacement or load control on the two horizontal axes, while allowing rotation about these axes. The system is described in detail, and the system performance is validated through results from a centrifuge test comparing observed results with analytical and numerical solutions. The validation of the system considers a mudmat foundation under large amplitude lateral displacement, where two displacement degrees-of-freedom and two rotational degrees-of-freedom were of interest. However, the apparatus is versatile and can be used for testing other foundation types or pipelines, with up to six degrees-of-freedom.

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