Deflection Characteristics

Because of the rigid beam-to-column connections, a moment frame cannot displace laterally without bending the beams and columns. The primary source of lateral stiffness of the entire frame is therefore dependent on the bending rigidity of the frame members. To understand its lateral deflection characteristics, it is convenient to consider the deflections of a rigid frame as composed of two components similar to the deflection components of a structural element such as a vertical cantilever column. The primary deflection of the cantilever column is due to bending and the secondary component is due to shear. Unless the column is relatively short, the shear component may be ignored in deflection computations. However, in a moment frame, both of these components are equally important. The bending and the shear deflection components of a rigid frame are usually referred to as the cantilever bending and frame racking.

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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