任意の軌道を動く幾何学的非線形構造物の動的有限要素解析 : 第2報,直接時間積分法と空気抵抗について(機械力学,計測,自動制御)

概要

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The purpose of the research is to develop a procedure for performing a dynamic analysis in the case that a three-dimensional (3D)-framed structure undergoes large translational and rotational displacements when it moves along an general trajectory in non-linear-uniform velocity. First, the acceleration at an arbitrary position in a 3D structure rigidly moving along a general trajectory was derived. Then the finite-element equations of motion considering the acceleration were derived. As the time-integration methods, both the Newmark Method and the Modified Newton Method were used to examine what method is more effective for a nonlinear dynamics. It's discussed that not only the viscous damping force due to internal friction of a body but also a drag like the air resistance have to be considered in the case that it in the air undergoes large displacements at high speed. Then a comparison is made between the calculated results and the experimental ones in the case that the clamped end of the cantilever moved along the trajectory of an arc.
一般社団法人日本機械学会の論文
2001-12-25