bd3 / 12 — the second moment of an area, E* denotes the internal damping coefficient of aluminum,...

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Transcript of bd3 / 12 — the second moment of an area, E* denotes the internal damping coefficient of aluminum,...

Page 1: bd3 / 12 — the second moment of an area, E* denotes the internal damping coefficient of aluminum, and c is the external damping coefficient of air. The value P = F/ + F \ + F/ +
Page 2: bd3 / 12 — the second moment of an area, E* denotes the internal damping coefficient of aluminum, and c is the external damping coefficient of air. The value P = F/ + F \ + F/ +