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- W22299160 abstract "This thesis analyzes the nonlinear dynamics of a drill-string including uncertainty modeling. A drill-string is a slender flexible structure that rotates and digs into the rock in search of oil. A mathematical-mechanical model is developed for this structure including fluid-structure interaction, impact, geometrical nonlinearities and bit-rock interaction. After the derivation of the equations of motion, the system is discretized by means of the finite element method and a computer code is developed for the numerical computations using the software MATLAB. The normal modes of the dynamical system in the prestressed configuration are used to construct a reduced order model for the system. To take into account uncertainties, the nonparametric probabilistic approach, which is able to take into account both system-parameter and model uncertainties, is used. The probability density functions related to the random variables are constructed using the maximum entropy principle and the stochastic response of the system is calculated using the Monte Carlo method. A novel approach to take into account model uncertainties in a nonlinear constitutive equation (bit-rock interaction model) is developed using the nonparametric probabilistic approach. To identify the probabilistic model of the bit-rock interaction model, the maximum likelihood method together with a statistical reduction in the frequency domain (using the Principal Component Analysis) is applied. Finally, a robust optimization problem is performed to find the operational parameters of the system that maximizes its performance, respecting the integrity limits of the system, such as fatigue and instability" @default.
- W22299160 created "2016-06-24" @default.
- W22299160 creator A5070873485 @default.
- W22299160 date "2010-04-07" @default.
- W22299160 modified "2023-09-24" @default.
- W22299160 title "Numerical analysis of the nonlinear dynamics of a drill-string with uncertainty modeling" @default.
- W22299160 cites W1536882529 @default.
- W22299160 cites W1538934584 @default.
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- W22299160 cites W1548066750 @default.
- W22299160 cites W1573186872 @default.
- W22299160 cites W1574563004 @default.
- W22299160 cites W1582653889 @default.
- W22299160 cites W1588656616 @default.
- W22299160 cites W1591608973 @default.
- W22299160 cites W1663973292 @default.
- W22299160 cites W1820938075 @default.
- W22299160 cites W1855309718 @default.
- W22299160 cites W1966994088 @default.
- W22299160 cites W1968545061 @default.
- W22299160 cites W1970585012 @default.
- W22299160 cites W1973992060 @default.
- W22299160 cites W1974150461 @default.
- W22299160 cites W1977443188 @default.
- W22299160 cites W1977677049 @default.
- W22299160 cites W1979710921 @default.
- W22299160 cites W1985292864 @default.
- W22299160 cites W1985845039 @default.
- W22299160 cites W1988418829 @default.
- W22299160 cites W1990508157 @default.
- W22299160 cites W1993224437 @default.
- W22299160 cites W1995875735 @default.
- W22299160 cites W1997969642 @default.
- W22299160 cites W1998543321 @default.
- W22299160 cites W2003191951 @default.
- W22299160 cites W2003195597 @default.
- W22299160 cites W2004240079 @default.
- W22299160 cites W2006093909 @default.
- W22299160 cites W2007181784 @default.
- W22299160 cites W2008347628 @default.
- W22299160 cites W2013381030 @default.
- W22299160 cites W2015770320 @default.
- W22299160 cites W2016438085 @default.
- W22299160 cites W2018832607 @default.
- W22299160 cites W2019149841 @default.
- W22299160 cites W2032558547 @default.
- W22299160 cites W203276351 @default.
- W22299160 cites W2034255074 @default.
- W22299160 cites W2040905071 @default.
- W22299160 cites W2042095452 @default.
- W22299160 cites W2043042987 @default.
- W22299160 cites W2043364341 @default.
- W22299160 cites W2044257740 @default.
- W22299160 cites W2045364398 @default.
- W22299160 cites W2047250560 @default.
- W22299160 cites W2048274879 @default.
- W22299160 cites W2052782085 @default.
- W22299160 cites W2057280322 @default.
- W22299160 cites W2058496561 @default.
- W22299160 cites W2059483490 @default.
- W22299160 cites W2061777337 @default.
- W22299160 cites W2062113928 @default.
- W22299160 cites W2082742024 @default.
- W22299160 cites W2086280062 @default.
- W22299160 cites W2089174791 @default.
- W22299160 cites W2090974678 @default.
- W22299160 cites W2100464339 @default.
- W22299160 cites W2107221565 @default.
- W22299160 cites W2121190343 @default.
- W22299160 cites W2123859926 @default.
- W22299160 cites W2124090441 @default.
- W22299160 cites W2143679488 @default.
- W22299160 cites W2143922649 @default.
- W22299160 cites W2146678735 @default.
- W22299160 cites W2155403715 @default.
- W22299160 cites W250565090 @default.
- W22299160 cites W2797333853 @default.
- W22299160 cites W2798461040 @default.
- W22299160 cites W2807981689 @default.
- W22299160 cites W281192180 @default.
- W22299160 cites W3006233406 @default.
- W22299160 cites W3020882730 @default.
- W22299160 cites W3023540311 @default.
- W22299160 cites W3083113686 @default.
- W22299160 cites W3099514962 @default.
- W22299160 cites W3148930403 @default.
- W22299160 cites W3211400184 @default.
- W22299160 cites W98797825 @default.
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