{"id":822,"date":"2022-03-03T08:00:08","date_gmt":"2022-03-03T07:00:08","guid":{"rendered":"https:\/\/spectraldynamics.eu\/?post_type=faq&p=822"},"modified":"2024-01-08T15:31:25","modified_gmt":"2024-01-08T14:31:25","slug":"dynamic-measurement-quantities","status":"publish","type":"faq","link":"https:\/\/spectraldynamics.eu\/fr\/technical-blog\/dynamic-measurement-quantities\/","title":{"rendered":"Grandeurs physiques"},"content":{"rendered":"

Grandeurs de mesure dynamiques\u00a0: introduction<\/h2>\n\n\n\n

Le Mouvement est caract\u00e9ris\u00e9 par trois grandeurs : D\u00e9placement \u2013 Vitesse \u2013 Acc\u00e9l\u00e9ration<\/p>\n\n\n\n

D\u00e9placement: <\/strong>Le d\u00e9placement quantifie le changement de position spatiale<\/p>\n\n\n\n

Rapidit\u00e9: <\/strong>La vitesse est le taux de changement de d\u00e9placement par rapport au temps<\/p>\n\n\n\n

Acc\u00e9l\u00e9ration: <\/strong>L'acc\u00e9l\u00e9ration est le taux de variation de la vitesse par rapport au temps<\/p>\n\n\n\n

Relations de d\u00e9placement, de vitesse et d'acc\u00e9l\u00e9ration<\/h2>\n\n\n\n

Pour un mouvement sinuso\u00efdal, le d\u00e9placement, la vitesse et l'acc\u00e9l\u00e9ration sont exprim\u00e9s par :<\/p>\n\n\n\n

d\u00e9placement d = d0<\/sub> p\u00e9ch\u00e9 [2\u03c0ft]<\/p>\n\n\n\n

vitesse v = d0<\/sub> (2\u03c0f ) cos [2\u03c0ft]<\/p>\n\n\n\n

acc\u00e9l\u00e9ration a = -d0<\/sub> (2\u03c0f )2<\/sup> p\u00e9ch\u00e9 [2\u03c0ft]<\/p>\n\n\n\n

o\u00f9 d0<\/sub> = amplitude de d\u00e9placement \/ f = fr\u00e9quence \/ t = temps<\/p>\n\n\n\n

Relations d'amplitude et unit\u00e9s<\/h2>\n\n\n\n

Relations math\u00e9matiques entre d\u00e9placement, vitesse et acc\u00e9l\u00e9ration<\/p>\n\n\n\n

r\u00e9 =<\/td>v\/\u03c0f<\/td>Ga\/2(\u03c0f)2<\/td><\/tr>
v =<\/td>\u03c0fd<\/td>Ga\/2 \u03c0f<\/td><\/tr>
un =<\/td>2(\u03c0f)\u00b2d\/g<\/td>2\u03c0fv\/G<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Unit\u00e9s gravitationnelles<\/h2>\n\n\n\n

Normalise l'acc\u00e9l\u00e9ration \u00e0 la constante d'acc\u00e9l\u00e9ration gravitationnelle\u00a0:<\/p>\n\n\n\n

g = acc\u00e9l\u00e9ration\/ G<\/p>\n\n\n\n

o\u00f9 G est la constante d'acc\u00e9l\u00e9ration gravitationnelle dans les unit\u00e9s appropri\u00e9es<\/p>\n\n\n\n

Unit\u00e9s anglaises<\/th>Unit\u00e9s SI<\/th>Unit\u00e9 m\u00e9trique et Acc en g<\/th><\/tr><\/thead>
d = de cr\u00eate \u00e0 cr\u00eate
v = pic de po\/s
a = g pic
f = Hz
G = 386,09 pouces\/s2
\u03c0 = 3,1416<\/td>		d = mm cr\u00eate \u00e0 cr\u00eate
v = pic mm\/s
a = pic m\/s2
f = Hz
G = 10000 mm\/s2
\u03c0 = 3,1416<\/td>		d = mm cr\u00eate \u00e0 cr\u00eate
v = pic mm\/s
a = g pic
f = Hz
G = 9806,6 mm\/s2
\u03c0 = 3,1416<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"

Le Mouvement est caract\u00e9ris\u00e9 par trois grandeurs : D\u00e9placement \u2013 Vitesse \u2013 Acc\u00e9l\u00e9ration<\/p>","protected":false},"featured_media":847,"comment_status":"closed","ping_status":"closed","template":"","category_faq":[15],"acf":[],"yoast_head":"\nDynamic Measurement Quantities — Spectral Dynamics<\/title>\n<meta name=\"description\" content=\"test\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/spectraldynamics.eu\/fr\/technical-blog\/dynamic-measurement-quantities\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dynamic Measurement Quantities — Spectral Dynamics\" \/>\n<meta property=\"og:description\" content=\"test\" \/>\n<meta property=\"og:url\" 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