What is bending beam?
In building engineering, bending rays concerns the behavior of certain structural elements in physical design. The element can be considered a beam if it is firm and homogeneous and its length is many times its height or width. Primarily the function of the bend is to withstand bending; This is unlike structural elements that primarily resist tension, compression or cut. The structural properties of the bending are determined by its dimensions, materials and shape of the cross -section.
A simple example of bending bend is a bridge with a car. Bridges often have concrete roads on them, but concrete is generally only in compression. However, the long bridge will tend to sag in the center where there is no land that would support it. This sagging will be in the shape of a circular arch and occurs due to the way the internal voltage is distributed when bending bending. To resist this bend, a thicker metal beam is usually placed under the road.
The most important equation in bending beam is equationbeam Euler-Bernelli. This equation concerns the deflection of the beam to the applied force, the characteristics of the cross -section and the properties of the beam material. The amount of bend bending can be reduced by reducing network applied forces, deformation of the beam cross -section and using a stronger material.
In the horizontal beam with the application of descending forces, the upper part of the beam actually gets into the compression, while the lower part will go into tension. In fact, the further the material is, the greater the tension will experience. It turns out that for a given amount of total material, it is best to strengthen the beam, strengthen the lower and upper cross -section. Therefore, engineers propose rays with a material concentrated towards the lower and upper areas of the cross sectaion.
This is the principle of design of i-spars or rays with cross-sections that resemble the letter "I." Produce and transport rays with lots of matter is expensive, tIt is important to minimize the amount of material used. There is plenty of material in the medium heights in the beam cross -section to keep the beam together as a solid piece. The rest of the material is concentrated on the bottom and upper part of the cross -section, giving the beam high resistance to bending. Resistance to bending is called its stiffness.