Potential forces and alternation of stability character in non-conservative systemsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 20 января 2021 г.
Аннотация:The influence of non-conservative forces (both positional and velocity-dependent) upon stability of equilibrium positions of mechanical systems has been intensely discussed for many years. In particular, it is well known that even small dissipative forces can cause instability. In the present work, the influence of potential forces upon stability of trivial equilibrium in 2DoF nonconservative systems is studied. Conditions are found when the increase in stiffness corresponding to one of generalized coordinates results in multiple (up to three) changes of stability character. This effect is illustrated by the example of an aeroelastic system with two translational degrees of freedom.