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Nonlinear dissipative spring mass model for a percussive drill rod joint of the coupling sleeve type
Luleå tekniska universitet.
Luleå tekniska universitet.
Luleå tekniska universitet.
1989 (English)In: International Journal of Impact Engineering, ISSN 0734-743X, E-ISSN 1879-3509, Vol. 8, no 4, p. 303-313Article in journal (Refereed) Published
Abstract [en]

A nonlinear dissipative spring mass (NDSM) model for a percussive drill rod joint of the coupling sleeve (CS) type is established. Such a joint consists of a cylindrical coupling sleeve with internal thread which connects two drill rods with external threads at their ends. The model disregards wave motion in the coupling sleeve but accounts for axial mobility of the sleeve relative to the rods. This mobility is due to local deformation and slip of the threads. The model is characterized by the mass of the sleeve and by three parameters which represent the coupling between the sleeve and the drill rods through the threads. A static and a dynamic test have been developed for determining the coupling parameters. The model is validated by simulating previous impact tests with a commercial CS joint.

Place, publisher, year, edition, pages
1989. Vol. 8, no 4, p. 303-313
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-6494DOI: 10.1016/0734-743X(89)90019-5Local ID: 4b73fee0-2599-11dd-9e62-000ea68e967bOAI: oai:DiVA.org:ltu-6494DiVA: diva2:979379
Note
Godkänd; 1989; 20080519 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-21Bibliographically approved

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  • apa
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