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fundamental natural frequency
hello,
i am using national building code (canada) 1995 detailed procedure to determine the wind load on an antenna. however, i need to find the fundamental natural frequency of the antenna and have no clue. the antenna is a circular aluminum antenna 17ft long.
i got the following from chopra (1995) *dynamics of structures*, pp. 589-592.
to get the natural frequency in cycles/sec, divide the above result by 2pi. |
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发表于 2009-9-9 14:10:52
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