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Generalized methods of kinematic chains structural synthesis

Romaniak K.

International Journal of Applied Mechanics and Engineering

2010

Vol. 15, no 3

821-829

The core of the planar mechanisms structural synthesis is constituted by the principle whereby every mechanism of any structure can be created by adding to the base and driving link(s) or to yet another already existing mechanism of a lower class, the kinematic chain with a zero degree of freedom (0-DOF) (Assur groups). This principle is generalized covering the mechanisms of all groups. The structural synthesis of 0-DOF kinematic chains is carried out in three stages: - the kinematic chains consisting of binary links (exclusively) are determined, - the synthesis of kinematic chains of zero group is performed with the use of two methods, - the synthesis of kinematic chains is performed for the remaining groups. Numerous examples are presented to illustrate the procedure.

New Methods of the Assur Groups Structural Synthesis

Romaniak K.

Mechanics and Mechanical Engineering

2008

Vol. 12, nr 2

125-133

The paper presents the synthesis of the Assur groups different classes, single - or multi-contours conducted with three new methods (M1, M2, M3). Their usage every time leads to the Assur group with zero degree of freedom. Method M1 was used to synthesis of Assur group class III and higher; M2 to creation of multi contour Assur groups; M3 to creation of kinematic chains composed of Assur groups.