- Title
- Approximate model for blunt objects indenting cohesive‐frictional materials
- Creator
- Hambleton, J. P.; Drescher, A.
- Relation
- International Journal for Numererical Analytical Methods in Geomechanics Vol. 36, Issue 3, p. 249-271
- Publisher Link
- http://dx.doi.org/10.1002/nag.1004
- Publisher
- John Wiley & Sons
- Resource Type
- journal article
- Date
- 2012
- Description
- An approximate two‐dimensional model for indentation of blunt objects into various types of rigid‐perfectly plastic cohesive‐frictional material is derived. Particular emphasis is placed on considering indentation as a process involving evolution of the boundary of material displaced by the indenter. Force–penetration relationships are obtained by an incremental approach utilizing key kinematic and static information from indentation of a flat punch. Albeit approximate, the proposed model applies to arbitrary indenter geometry and weightless or ponderable cohesive‐frictional materials exhibiting associated or non‐associated plastic flow. Two specific indenter geometries, the cylinder and blunt wedge, are explored in detail. Favorable agreement is found between the analytic results and those obtained using the finite element method (FEM). For both the wedge and cylinder, it is further shown that accurate analytic expressions relating indentation force explicitly to penetration can be derived. In the case of the wedge and weightless material, predictions of indentation force obtained from the derived expressions are very close to those computed from implicit equations available in the literature.
- Subject
- indentation; rigid‐plastic; cohesive‐frictional; cylinder; wedge; finite element method
- Identifier
- http://hdl.handle.net/1959.13/1404245
- Identifier
- uon:35298
- Identifier
- ISSN:0363-9061
- Rights
- This is the peer reviewed version of the following article: Hambleton, J. P. and Drescher, A. (2012), Approximate model for blunt objects indenting cohesive‐frictional materials. Int. J. Numer. Anal. Meth. Geomech., 36: 249-271, which has been published in final form at doi: 10.1002/nag.1004. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
- Language
- eng
- Full Text
- Reviewed
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