- Title
- Dynamic analysis of a smooth penetrometer free-falling into uniform clay
- Creator
- Nazem, M.; Carter, J. P.; Airey, D. W.; Chow, S. H.
- Relation
- Géotechnique Vol. 62, Issue 10, p. 893-905
- Publisher Link
- http://dx.doi.org/10.1680/geot.10.P.055
- Publisher
- Institute of Civil Engineers (ICE) / Thomas Telford
- Resource Type
- journal article
- Date
- 2012
- Description
- The finite-element analysis of free-falling objects penetrating soil deposits is one of the most sophisticated and challenging problems in geomechanics. A robust numerical method will be described here for dealing with such complex and difficult problems. The approach is based on the arbitrary Lagrangian–Eulerian (ALE) method of analysis, the main features and challenges of which are described briefly in the paper. The ALE method is then employed to perform a parametric study of a perfectly smooth penetrometer free-falling into a uniform layer of clay, which deforms under undrained conditions. The effect of the mechanical properties of the clay soil on the penetration characteristics is presented, and an approximate, closed-form expression is derived for the dynamic penetration factor, Ndp. Comparisons are made between the deduced values of Ndp and published values of the conventional cone factor, Nc, and comparisons are made with experimental data to validate the approach.
- Subject
- numerical modelling; offshore engineering; shear strength; site investigation; soil/structure interaction
- Identifier
- http://hdl.handle.net/1959.13/1037207
- Identifier
- uon:13410
- Identifier
- ISSN:0016-8505
- Rights
- Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees
- Language
- eng
- Full Text
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