BACKGROUND OF THE DETERMINATION OF STRENGTH IN KINEMATIC VAPORS

Abstract

The solids from which the mechanism is formed are called links. This refers to both absolutely rigid, and deformable and flexible bodies.Liquids and gases in the theory of mechanisms are not considered links.A link is either one part or a combination of several parts.United in one kinematic immutable system. The links are distinguished by design features (piston, gear, connecting rod, etc.) and but by the nature of their movement.For example, a link that rotates a full revolution around a fixed axis is called a crank; for an incomplete revolution, a field is covered: a ring about a slider that performs linear translational motion, etc. kinematic links: a pair is called the lowest, whether its elements of the links touch only along the surface and the higher, if only along the lines or at the points.The nature of the bonds imposed by kinematic pairs is determined by the geometric shapes of the elements of the pairs. In order for the bonds to act throughout the entire movement of the mechanism, the elements of the kinematic pairs must continuously touch each other.One of the simplest methods for accounting for link inertia is the principal moment method. The disadvantage of this method is partial errors for certain directions of angular acceleration.To avoid this, we can suggest the following rule: on the acceleration plate, the angular acceleration of the link is directed from full acceleration to normal. How a contradiction is sought is because the normal acceleration has a direction opposite because the normal acceleration has a direction opposite to the link (directed toward the center), and the image of the tangential acceleration is directed parallel to this acceleration (Fig. A, b, c),The following simplification can be made if the main vector of inertia is considered together with the weight of the link. We will call them the combined force and denote by с with the link index, and denote the image of the corresponding acceleration by Z with the same index.