Numerical Aspects of Nonlinear Flexible Aircraft Flight Dynamics Modeling

Numerical Aspects of Nonlinear Flexible Aircraft Flight Dynamics Modeling
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非线性柔性飞机飞行动力学建模的数值方面

DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
R. Palacios
R. Palacios
中科院分区:
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文献类型:
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作者:
R. Simpson;R. Palacios

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提出了工艺动力学建模。基线模型是几何精确的复合梁模型,描述了柔性体动力学,该动力学受到使用非定常涡格法 (UVLM) 预测的空气动力的影响。首先针对具有大节点旋转的静态问题研究梁公式的客观性。研究发现,使用二次(3 节点)元素,与公式非客观性相关的误差可最小化至可忽略的水平。除此之外,还提出并比较了 UVLM 的两种力计算方法。当应用于不稳定的空气动力学时,它们表现出微妙但重要的差异
craft dynamics modeling is presented. The baseline model is a geometricallyexact composite beam model describing the exible-body dynamics which are subject to aerodynamic forces predicted using the unsteady vortexlattice method (UVLM). The objectivity of the beam formulation is rst investigated for static problems with large nodal rotations. It is found that errors associated with non-objectivity of the formulation are minimized to negligible levels using quadratic (3-noded) elements. In addition to this, two force calculation methods are presented and compared for the UVLM. They show subtle but important dierences when applied to unsteady aero
DOI: 10.1016/j.compstruc.2012.05.011
发表时间: 2012-11-01
影响因子: 4.7
作者:
Hesse, Henrik;Palacios, Rafael
通讯作者: Palacios, Rafael