1+2/2010 - Společnost pro pojivové tkáně

Six equilibrium conditions can be written for human body therefore there are sixun known external forces (3 values), (see fig. 3).Force F cont3,ext,e3 can be calculated from moment equilibrium condition to axisForce F con 2,ext,e3 is calculated from moment equilibrium condition toForce F cont2,ext,e4 is calculated from moment equilibrium condition toForces is calculated from displacement equilibrium condition (directions x, y, z)3.5 The number of contact points with floor is greater than treeIf the number of contact points with floor is greater than tree then number of contactpoints must be reduced. Forces at 2 points must be substituted by result force, for exampleforces at left and right hips are substituted by result force, similarly for knees and/or ankles...Figure 3. Human body supposed at 3 points and the floor reactions.POHYBOVÉ ÚSTROJÍ, ročník 17, 2010, č. 1+2 65