| The biathlon consists of the shooting and langlauf. Our elite biathlon advance the sliding speed limitedly. It is necessary for them to shorten the shooting time and to improve the shoot straight. Because of these the elite improve the stability of shooting position. The CM of standing shooting position is higher and the supporting surface of it is smaller. They must hold the position by muscle's intensity. On the basis of these points, the stability of standing shooting position is poor. They must improve the intensity and shoot straight of standing shooting position. That is the center task of studying standing shooting position.According to the Hanavand 15 rigid body modeling, She predigests the model of standing shooting position based on multi-body dynamics, then the standing shootin position modal is built up in ADAMS. The standing shooting process is simulated to find the method of improving the stability and shoot straight of standing shooting position.Recuring to the analysis ability of ADAMS, the text bulit up the standing shooting position integritys model. Through simulating the body movement as bullet explodes, it analyses the graph of the muzzle displacement, waist moment and waist force. At last the text put forward the method for improving the stability of standing shooting.
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