絶対節点座標アプローチにより定式化された柔軟マルチボディダイナミクスにおける梁要素の減衰行列に関する研究(機械力学,計測,自動制御)

抄録

Accurate seismic analysis of large deformable moving structures is still unsolved problems in the field of earthquake engineering. In order to analyze these problems, the nonlinear finite element method formulated by the absolute nodal coordinate approach is noticed. Because, this formulation has several advantages about mass matrix and elastic forces in the case of large deformation problems. But, the damping characteristic in this formulation is not studied yet. In this paper, we describe the damping characteristic of the beam element in the absolute nodal coordinate formulation. We introduce Rayleigh damping model for this formulation, because this model is frequently used for the structural analysis in seismic engineering field. Finally, we show the numerical simulation results of this damping effect for linear vibration problems and a large deformation problem.