Consistent structural linearisation in flexible-body dynamics with large rigid-body motion
Consistent structural linearisation in flexible-body dynamics with large rigid-body motion
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DOI：
10.1016/j.compstruc.2012.05.011
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发表时间：
2012-11-01
影响因子：
4.7
通讯作者：
Palacios, Rafael
中科院分区：
文献类型：
--
作者：
Hesse, Henrik;Palacios, Rafael
一个一致的线性化，使用摄动方法，获得了大的刚体运动的柔性细长体的结构自由度。所得到的系统保留了刚性和弹性运动之间的所有耦合，并可以投影到一个参考配置的几个振动模式。这给出了在刚体自由度中具有立方项的运动方程和可以在时间推进模拟之前预先计算的常系数。给出了数值结果来说明该方法并显示其相对于平均轴近似的优势。(c)2012爱思唯尔有限公司保留所有权利。
A consistent linearisation, using perturbation methods, is obtained for the structural degrees of freedom of flexible slender bodies with large rigid-body motions. The resulting system preserves all couplings between rigid and elastic motions and can be projected onto a few vibration modes of a reference configuration. This gives equations of motion with cubic terms in the rigid-body degrees of freedom and constant coefficients which can be pre-computed prior to the time-marching simulation. Numerical results are presented to illustrate the approach and to show its advantages with respect to mean-axes approximations. (c) 2012 Elsevier Ltd. All rights reserved.