mechanical resonance
[/məˈkænɪkəl ˈrezənəns/]
nounpl: mechanical resonances
ressonância mecânica
1. A phenomenon in which a mechanical system vibrates with maximum amplitude at a specific frequency (the natural frequency), when subjected to an external periodic force at that same frequency
The bridge collapsed due to mechanical resonance caused by soldiers marching in step across it.
A ponte desabou devido à ressonância mecânica causada por soldados marchando em passo sincronizado sobre ela.
2. The condition where the driving force frequency matches the natural vibrational frequency of an object, resulting in amplified oscillations
Engineers must account for mechanical resonance when designing buildings in earthquake-prone areas.
Os engenheiros devem levar em conta a ressonância mecânica ao projetar edifícios em áreas propensas a terremotos.
3. A state of vibration where energy transfer is most efficient between a driving force and a mechanical system
Pushing a child on a swing at the right frequency demonstrates mechanical resonance.
Empurrar uma criança em um balanço na frequência correta demonstra ressonância mecânica.
Mechanical resonance is a crucial concept in both American and Brazilian engineering fields, particularly in civil engineering, mechanical design, and construction. The term gained cultural prominence after historical events like the Tacoma Narrows Bridge collapse (1940), which is frequently cited as a dramatic example in educational contexts in both countries. In Brazil, understanding ressonância mecânica is essential for construction in seismically active regions and in designing industrial machinery.
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