| 31. | A dynamic load is one which changes with time fairly quickly in comparison to the structure's natural frequency.
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| 32. | :A harmonic is a vibrational mode at a frequency which is an integer multiple of the natural frequency.
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| 33. | The values of the spring and mass give a natural frequency of 7 Hz for this specific system.
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| 34. | Why are natural frequency formats helpful?
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| 35. | Ideally, the natural frequency should be high and the damping factor should be near 0.707 ( critical damping ).
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| 36. | Since the system is a 2 DOF system, there are two modes with their respective natural frequencies and shapes.
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| 37. | The lowest one in frequency is the fundamental frequency, and the next highest natural frequency is the first overtone.
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| 38. | He identified that the failures were caused by one of the blades'natural frequencies being in the engine running range.
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| 39. | It wasn't intentional, he says, but the rowers seemed to force the boat to vibrate close to its natural frequency.
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| 40. | The total response of the circuit is the resonant frequencies of the ZIR are called the " natural frequencies ".
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