Camp reaction

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In technical mechanics, the bearing reaction is a reaction force or a reaction moment in the supports of components or structures. In contrast, the cutting reaction includes the cutting forces and moments occurring in a cutting surface .

When a body is at rest, it is also in equilibrium of forces. All forces acting on it cancel each other out in their effect. For example, the weight acts on a bridge. Since bridges generally do not move, there must be one or more forces that counteract the weight. These forces are in the supports of the structures. In the case of the bridge, these are the pillars. These forces are the bearing forces. Some bearings can also generate moments. The forces and moments acting in the bearings are always opposed to the external loads (e.g. weight). If, for example, the forces acting on the bridge are increased, for example by vehicles driving over them, the forces acting in the bearings also increase; they “react” to the external loads.

The conceptual process in which the bearings are removed from a body and the bearing forces and moments are applied instead is called cutting free. Together with the equilibrium conditions , the bearing reactions can then be calculated if the body is statically determined . Otherwise, further framework conditions are required, such as the modulus of elasticity of the material.