J027043 空気中を自由落下する円錐形物体の非定常運動の解析([J027-04]生物規範メカニクス・システム:生物の運動,力学及びミメティクス(4))

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  • J027043 Analysis of unsteady motion of conical object falling in the air

抄録

Motion of an object falling in the air is determined by an interaction between the object and the airflow, which greatly depends on the detailed shape of the object. Torahiko Terada studied the overturning of the cone, and determined the relationship between the initial height and probability of the overturning experimentally. Analysis of such falling motion is not easy because the object-air interaction is determined by a dynamic flow structure produced by the motion, which depends on not only the position and velocity of the object but also the history up to the time considered. In this study, we focus on the overturning dynamics of the cone, and performed experiments to obtain the time-series data. Using the experimental data, we propose a mathematical model. We found that the function proposed in Terada's mathematical model does not match the experimental data. Using the experimentally based function, we succeeded in reproducing the experimental results, of the probability of the overturning behavior by introducing stochastic fluctuation to the initial angle.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _J027043-1-_J027043-5, 2013

    一般社団法人 日本機械学会

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