page_title: Tuned mass damper
section_title: Mechanical human sources
hierarchical_section_title: Tuned mass damper / Dampers in buildings and related structures / Sources of vibration and resonance / Mechanical human sources
caption_attribution_description: English: London Millennium Bridge - Damper beneath deck, north side - 240404.jpg Photo taken by &amp; Copyright Tagishsimon 24th April 2004
context_page_description: A tuned mass damper, also known as a harmonic absorber or seismic damper, is a device mounted in structures to reduce the amplitude of mechanical vibrations. Their application can prevent discomfort, damage, or outright structural failure. They are frequently used in power transmission, automobiles, and buildings.
context_section_description: Masses of people walking up and down stairs at once, or great numbers of people stomping in unison, can cause serious problems in large structures like stadiums if those structures lack damping measures.
caption: Dampers on the Millennium Bridge in London. The white disk is not part of the damper.
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