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首页> 外文期刊>Latin American Journal of Solids and Structures >Dynamic Instability of Beams Under Tip Follower Forces Using Geometrically Exact, Fully Intrinsic Equations
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Dynamic Instability of Beams Under Tip Follower Forces Using Geometrically Exact, Fully Intrinsic Equations

机译:使用几何精确的完全本征方程在尖端从动力下梁的动态不稳定性

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In this study, the dynamic instability of beams under tip follower forces are considered. The beam is modeled by using the geometrically exact, fully intrinsic beam equations which is subjected to an inclined tip follower force. Generalized differential quadrature method is employed to solve the governing equations. The effect of different parameters such as follower force inclination and magnitude, rotating speed, the distance between the beam center of gravity and elastic center, and cross-sectional properties on the instability boundary of beams are examined. Numerical results reveal that the critical load of the system can be influenced or in some cases be reversed by the combination of these parameters instead of considering these parameters separately. Moreover, it is shown that notwithstanding the simplicity of the equations and the method of solution, the results are very accurate and therefore the fully intrinsic equations and the method of solution is very useful for the dynamic solution of rotating and non-rotating beams.
机译:在这项研究中,考虑了梁在尖端随动力作用下的动态不稳定性。通过使用几何精确的,完全固有的梁方程对梁进行建模,该方程受倾斜的尖端随动力的作用。采用广义微分求积法求解控制方程。研究了不同参数的影响,例如从动力倾角和大小,旋转速度,梁重心与弹性中心之间的距离以及梁不稳定性边界上的截面特性。数值结果表明,通过组合这些参数而不是单独考虑这些参数,可以影响系统的临界负荷,或者在某些情况下可以逆转临界负荷。而且,表明尽管方程和求解方法简单,但是结果还是非常准确的,因此完全固有的方程和求解方法对于旋转和非旋转梁的动态求解非常有用。

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