ФОРМИРОВАНИЕ РАСЧEТНЫХ СХЕМ ДОПОЛНИТЕЛЬНЫХ СВЯЗЕЙ, ПРИЦЕЛЬНО РЕГУЛИРУЮЩИХ СПЕКТР ЧАСТОТ СОБСТВЕННЫХ КОЛЕБАНИЙ УПРУГИХ СИСТЕМ С КОНЕЧНЫМ ЧИСЛОМ СТЕПЕНЕЙ СВОБОДЫ МАСС, У КОТОРЫХ НАПРАВЛЕНИЯ ДВИЖЕНИЯ ПАРАЛЛЕЛЬНЫ, НО НЕ ЛЕЖАТ В ОДНОЙ ПЛОСКОСТИ ЧАСТЬ 3: ВТОРОЙ ТЕСТОВЫЙ ПРИМЕР И ЗАКЛЮЧЕНИЕ
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Аннотация
Для некоторых упругих систем с конечным числом степеней свободы масс, у которых направления движения масс параллельны и лежат в одной плоскости, (например, стержни) разработаны методы создания дополнительных связей, введение каждой из которых прицельно увеличивает значение только одной собственной частоты и не изменяет ни одну из форм собственных колебаний. Метод формирования матрицы дополнительных коэффициентов жесткости, характеризующих в этой задаче такую прицельную связь, может быть применен и при решении аналогичной задачи для упругих систем с конечным числом степеней свободы масс, у которых направления движения масс параллельны, но не лежат в одной плоскости (например, пластины). Вместе с тем для таких систем сформулированы лишь требования к расчетным схемам дополнительных прицельных связей, а не методы их создания. В данной статье рассматривается пример применения для пластин разработанного подхода, позволяющего создавать расчётные схемы дополнительных прицельных связей и для таких систем.
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