Собственные колебания сочленения упругого тела с тонкими стержнями

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Аннотация

Изучается поведение частот собственных колебаний сочленения анизотропного однородного тела с несколькими тонкими цилиндрическими упругими стержнями, внешние торцы которых жестко защемлены. Установлено, что при утончении стержней в низкочастотном диапазоне спектра пределами нормированных собственных чисел исходной сингулярно возмущенной задачи теории упругости служат собственные числа систем обыкновенных дифференциальных уравнений на осях стержней с условиями Дирихле в концевых точках и алгебраическими соотношениями, объединяющими системы в единую спектральную задачу. В случае изотропного материала предельная задача распадается на задачи Дирихле для дифференциальных операторов четвертого порядка и алгебраической задачи для положительной матрицы размером шесть-на-шесть.

Об авторах

С. А. Назаров

Институт проблем машиноведения РАН

Автор, ответственный за переписку.
Email: srgnazarov@yahoo.co.uk
Санкт-Петербург, Россия

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