МОЖНО ЛИ ПО СОБСТВЕННОЙ ЧАСТОТЕ ОПРЕДЕЛИТЬ НА СКОЛЬКО СТОРОН КВАДРАТНАЯ ПЛАСТИНА ЗАЩЕМЛЕНА

. In the work the vibration of the plateau in the form of quarter, equilateral triangle and rhomb is investigated. It has been proposed that at some side this plateau fixed hardly and in another side they a free connected. The problem of identification of general boundary conditions of annular plateau at both contours and opposite sides on some frequency has been considered. It is considered the problem of identification of on one frequency non elasticity fixed annular plateau in a both contours. The problem is that how determine in what side of the plateau fixed hardly and in what side it connected as freely. Such problem has not been considered yet.

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