Paper Title:
Numerical Study on Damage of Half-Infinite Bar
  Abstract

Drillstring in oil drilling is simplified as a half-infinite bar. Taking account of Peierls-Nabarro(P-N) force and viscous effect of solid, dynamic response is simulated under harmonic driving at the end of the bar. With the physical properties specified, periodic, quasi-periodic and chaotic motions would appear as a function of the amplitude of external driving. We find that all the particles of the bar have the same qualitative characters, while vibrating amplitude decreases along the bar. It appears that particles of the bar reach chaotic motion through quasi-periodic motion. Investigation of this half-infinite bar will provide references for design of drillstring to keep motion away from chaotic region.

  Info
Periodical
Key Engineering Materials (Volumes 324-325)
Edited by
M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz
Pages
169-172
DOI
10.4028/www.scientific.net/KEM.324-325.169
Citation
G. H. Zhao, N. M. Zhang, G. T. Yang, "Numerical Study on Damage of Half-Infinite Bar", Key Engineering Materials, Vols. 324-325, pp. 169-172, 2006
Online since
November 2006
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Price
$32.00
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