Lateral buckling of drill strings revisited: localised 'snaking'

Autor:	Ciprian D Coman
Rok vydání:	2023
Předmět:	Mechanics of Materials General Mathematics General Materials Science
Zdroj:	Mathematics and Mechanics of Solids. :108128652311661
ISSN:	1741-3028 1081-2865
DOI:	10.1177/10812865231166129
Popis:	The classical lateral buckling of a straight drill string confined within an inclined cylindrical borehole is formulated as a singularly perturbed boundary-value problem which is subsequently explored using asymptotic techniques. In particular, the localised nature of the critical eigenmodes is discussed with the help of a special multiple-scale technique that yields simple and accurate approximations for the corresponding critical loads. The asymptotic formulae obtained capture the dependence of these loads on the magnitude of the frictional forces as well as the inclination angle of the confining borehole.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a012af3796bb814eeee19b6f713db807 https://doi.org/10.1177/10812865231166129 Zobrazit plný text záznamu