DYNAMIC MODELLING FOR THE SECOND FLIGHT PHASE OF THE YURCHENKO LAYOUT VAULT BASED ON MSC. ADAMS

Kum-Hyok Hwang; Yong-Song Kim; Dong-Chol Choi; Mun-Il Choi

doi:10.52165/sgj.12.2.163-171

Authors

Kum-Hyok Hwang Faculty of Mechanics, Kim Il Sung University, Pyongyang, Democratic People’s Republic of Korea
Yong-Song Kim Faculty of Mechanics, Kim Il Sung University, Pyongyang, Democratic People’s Republic of Korea
Dong-Chol Choi Faculty of Mechanics, Kim Il Sung University, Pyongyang, Democratic People’s Republic of Korea
Mun-Il Choi Korea Sports College Pyongyang, Democratic People’s Republic of Korea

DOI:

https://doi.org/10.52165/sgj.12.2.163-171

Keywords:

vault, aerial movement, multibody dynamics, ADAMS

Abstract

Gymnasts attempt to increase the angles of rotation about transversal and longitudinal axes during the post-flight of vaulting, and these angles are related to different mechanical properties. The present study uses a 3D angle-driven computer simulation model of a gymnast who performs Yurchenko layout vault using ADAMS software. Simulation initial conditions are horizontal and vertical velocities of gymnast’s pelvis center and angular velocities about the transversal and longitudinal axes which can be easily measured. The initial linear and angular velocity conditions of the simulation model are each changed in certain increments from measurement data collected from an elite woman gymnast. Increasing initial horizontal velocity results in an increased horizontal flight distance, but has no connection with the duration of flight and angle of twists. The overall angle of twists is concerned with initial vertical velocity and angular velocities about the transversal and longitudinal axes. Also, increasing initial vertical velocity and angular velocity about transverse axis leads to increase in touchdown angle between ground’s horizontal axis and gymnast’s longitudinal axis.

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