Nonconservative Systems with a Finite Number of Degrees of Freedom
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BANICHUK, Nikolay, BARSUK, Alexander A., JERONEN, J., TUOVINEN, Tero, NEITTAANMAKI, Pekka. Nonconservative Systems with a Finite Number of Degrees of Freedom. In: Solid Mechanics and its Applications, 2020, nr. 259, pp. 69-144. ISSN 0925-0042. DOI: https://doi.org/10.1007/978-3-030-23803-2_3
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Solid Mechanics and its Applications
Numărul 259 / 2020 / ISSN 0925-0042

Nonconservative Systems with a Finite Number of Degrees of Freedom

DOI:https://doi.org/10.1007/978-3-030-23803-2_3

Pag. 69-144

Banichuk Nikolay1, Barsuk Alexander A.2, Jeronen J.3, Tuovinen Tero3, Neittaanmaki Pekka3
 
1 Institut pe Probleme Mecanice, Academia de Stiinte a Rusiei,
2 Moldova State University,
3 Department of Mathematical Information Technology, University of Jyvaskyla
 
 
Disponibil în IBN: 27 martie 2021


Rezumat

In this chapter we present some results on the stability and bifurcations of the systems with a finite number of degrees of freedom. We consider damping-induced destabilization in nonconservative systems. We start with a general theoretical treatment of the topic. As the model problem, we consider the double pendulum subject to both a follower force and gravitational loading. A special case of interest is treated with the theoretical framework. The chapter finishes with a thorough presentation and analysis of the model problem including the nonlinear dynamics, quasistatic equilibrium paths and their stability, and special cases of interest. In numerical examples, we show equilibrium paths and trajectory density visualizations of the time evolution of the nonlinear system. Sample-based uncertainty quantification is employed to capture both branches of a bifurcation in the same visualization. 

Cuvinte-cheie
Bifurcation (mathematics), visualization