1+2/2010 - Společnost pro pojivové tkáně

where a are accelerations and x are coordinates of element end points, index 1 denotesstart and index 2 end element point. The rotate acceleration e 1 according to vector andthe rotate acceleration e 2 according to vector are. (5)The inertia moments at the directions mentioned above are I 1 e 1 , I 2 e 2 . The moment ofinertia is defined as. (6)The moment equilibrium conditions are, (7)whereelement. Vectorsare force and moment vectors at the start and the end of thehave the following coordinates.The distances between the center of gravity and the forepart (index 1) and/or the endof the element (index 2) are a, b.The final values of forces and moments at element ends are sum of external and internalvalues. At first the zero values are set to all external forces and moments. The internal forcesand moments are calculated from the end of the leg and/or the end of the arm.3.1 No point is in contact with floorIn the case, when no element end is in contact with the floor, then the all externalforces are equal zero. (10)3.2 One point is in contact with floorThe human body is in contact with floor at the point cont only. The external forces andmoments at point cont are, (8)POHYBOVÉ ÚSTROJÍ, ročník 17, 2010, č. 1+2 63