normal mode frequency

[/ˈnɔːrməl moʊd ˈfrikwənsi/]
nounfemininepl: normal mode frequencies / frequências de modo normal
frequência de modo normal
1. The natural frequency at which a system oscillates when disturbed from its equilibrium position without external driving forces
The bridge's normal mode frequency was calculated to be 2.5 Hz.
A frequência de modo normal da ponte foi calculada em 2,5 Hz.
2. In physics and engineering, each of the characteristic frequencies corresponding to the natural vibration patterns of a mechanical or acoustic system
Engineers must avoid exciting the structure at its normal mode frequencies to prevent resonance.
Os engenheiros devem evitar excitar a estrutura em suas frequências de modo normal para prevenir ressonância.
3. The eigenfrequency of a vibratory system determined by its mass, stiffness, and damping properties
The first normal mode frequency is typically the lowest and most important for structural analysis.
A primeira frequência de modo normal é tipicamente a mais baixa e mais importante para análise estrutural.
This is primarily a technical term used in engineering, physics, and acoustics disciplines in both English and Portuguese-speaking countries. It is essential terminology in structural engineering, mechanical vibration analysis, and acoustical design. The concept is universally understood in academic and professional engineering contexts across all regions.
Synonyms / Sinônimos
natural frequencyeigenfrequencyresonant frequencycharacteristic frequencymodal frequency
Antonyms / Antônimos
forced frequencydriving frequencyexternal frequency

Regional Variations

General Brazilian Portuguese
frequência de modo normal
Standard technical term used in engineering and physics contexts
Portugal
frequência de modo normal
Same as Brazilian Portuguese, though engineers may also use 'frequência própria de vibração'
Technical Literature
frequência natural / frequência fundamental
Alternative terms commonly found in Portuguese technical documentation

Related Words

mode shapevibration analysisresonancedampingoscillationeigenvaluestructural dynamicsfrequency response

Related Idioms & Phrases

excite the normal mode
at resonance with the normal mode frequency
within the normal mode bandwidth
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