Stability analysis for the movement of strings in thixotropic liquid

I. Sh Akhatov, M. M. Khasanov, I. G. Khusainov

Research output: Contribution to journalArticlepeer-review


The paper has considered the particular features of the movement of a long vertical string in a borehole, filled with a thixotropic liquid. A model has been developed to allow for the effect of inertia of the liquid and string on the hoisting-descent of strings. Also, the effect of the total elasticity of strings was not ignored. The system of traditional differential equations obtained has been numerically analysed. It has been shown that the stationary movement of strings may lose its stability, due to the destruction of the structure of the liquid. In this case, periodic and chaotic self-oscillations are excited in the system.

Original languageEnglish
Pages (from-to)405-411
Number of pages7
JournalInzhenerno-Fizicheskii Zhurnal
Issue number4
Publication statusPublished - Apr 1994
Externally publishedYes


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