Why is damping necessary

Read more…. It's great to know how to simulate a mechanical part Thank you for the brief description. Very well explained. Trackbacks […] time, the basic mechanical equations change to take in account the time dependent phenomena such as damping and […].

Leave a Reply Cancel reply Your email address will not be published. Find videos about FEA. By PoseLab. My YouTube Channel. Download the Guides. Download the Free Guide Now! A greater understanding of the damping function requires a closer examination of how vibration works:. Materials with lower damping coefficients produce higher bounce back, while those with a higher damping coefficient reduce unwanted vibration or shock by soaking up the vibrational energy.

Of note, this process produces a small amount of heat. Common materials used in damping usually include viscoelastic materials, such as PVC and constrained layer foam composites. When sound waves strike any surface, some of those waves pass through the material and others reflect or bounce off of the surface.

Materials with a harder, less porous surface tend to produce a higher level of reflection, while porous materials allow for greater absorption. Acoustic absorption uses porous materials to line hard surfaces that typically reflect sound or airborne noises, such as those produced by:.

Sound absorbers contain porous materials like foam or blended fiber that keep sound waves from reflecting back into open spaces. Lining harder materials with absorbers like polyester fiber, polyester foam, or polyether foam reduces ambient noise produced by sound reflection.

Technicon uses a variety of sound absorbing and sound damping materials to mitigate acoustic vibration and noise in a broad range of applications. Our acoustic foam—often referred to as sound absorbing foam or soundproofing foam—is available in a variety of thicknesses and facing configurations for both functionality and aesthetic purposes. We also provide sound damping materials. Application of our vibration damping composites control vibration fatigue and structure-borne noise, often in combination with sound absorbers to reduce airborne noise as well.

Damping is the dissipation of vibratory energy in solid mediums and structures over time and distance. Similar to the absorption of sound in air, damping occurs whenever there is any type of friction that diminishes movement and disperses the energy. In construction, damping is essential for limiting vibrations and ensuring security and comfort in buildings and infrastructures. Damping is a way to limit vibrations and is essential for protecting the system in which it operates.

While on a larger scale, bridge deck damping systems have the same purpose. Supposing there is a dynamic sinusoidal load exciting a building structure or a structure with an exact frequency, what could happen? In theory, movements would become increasingly bigger and the structure would eventually collapse.