Consider an undamped single degree-of-freedom system experiencing harmonic excitation whose equation of motion (EOM) is given by: Here omega n is known as the natural frequency of response. The ...
ABERDEEN PROVING GROUND, Md. -- A new suite of laboratory equipment lets researchers shake, rattle and roll experimental designs to discover new technology solutions for the Army of the future. "Most ...
Journal of Experimental Botany, Vol. 48, No. 310 (MAY 1997), pp. 1125-1132 (8 pages) Recent theoretical work has suggested that tree natural frequency is an important indication of tree stability in ...
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