normal mode of vibration

normal mode of vibration

[′nȯrməl ¦mōd əv vī′brā·shən]
(mechanics)
Vibration of a coupled system in which the value of one of the normal coordinates oscillates and the values of all the other coordinates remain stationary.
References in periodicals archive ?
The data were obtained in the normal mode of vibration welding, in which the vibratory motion is normal to the specimen thickness [23].