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- The natural frequencies of a structure are the frequencies of free vibration. Free vibration is vibration that occurs in the absence of forced vibration. In a structure undergoing vibration, a mode of vibration is a characteristic pattern (shape) assumed by the structure in which the motion of every particle is simple harmonic motion with the same frequency. The fundamental mode of vibration of a structure is the mode having the lowest natural frequency.
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- Base exchange, Capillary attraction (capillary force), Colloidal particles, Consolidation, Contact load, Dispersing agent, Effective diameter, Equivalent diameter (equivalent size), Floc, Particle acceleration, Particle displacement, Particle size, Particle velocity, Tilth