Sports Engineering Project

Biomechanical analysis of bicycle-kick in soccer ball

By:
Mohammad M. Al Saaid
Graduat Student - ME 5840

Instroctor:
Prof. Peter Jenkins

List of Symbols: a Acceleration α Angular Acceleration V Velocity F Force r Radius of ball FA Impales force of Player A FB Impales force of Player B AFB Ball force from A to B
Fi kicking ball force Fj jumping force AVB Ball velocity from A to B e1,e2,e3 Unit vectors Φ1, Φ2, Φ3 Angular velocities of ball β1, β2 Angle of legs
Ө Angle of Player Foot in e3 & e2 plane
Ө1 Angle of Player Foot in e3 & e1 plane H Height of ball during bicycle ball m Weight of player ma Weight of player arm ml Weight of player leg mb Weight of ball Ωt Angular velocity of player trunk Ω1, Ω2 Angular velocities of player legs ll Moment of inertia of leg lt Moment of inertia of trunk la Moment of inertia of arm
M1 , M2 Moment of arms
Mt Moment of trunk
Ml1 , Ml2 Moment of legs t , t1 Time
L Length of player

Introduction:

The basic mechanics of kicking the ball can be divided into:
Running
Impulsion of the kicking leg from behind the torso to in front of it
Kicking leg
Supporting leg
Relaxed transfer of the forward leg with braking action, after hitting the ball. The mechanics of kicking the ball implies