Вільний вібраційний аналіз сендвіч-пластин з піни, зміцненої мікророзмірним алюмінієвим порошком
DOI:
https://doi.org/10.15330/pcss.23.4.659-668Ключові слова:
сендвіч-пластини, аналітичний розв’язок, вільна вібрація, пінополіуретан, алюмінієвий порошокАнотація
У статті наведено аналітичне дослідження поведінки вільної вібрації сендвіч-пластин з пінопласту, зміцненого алюмінієвим мікросферичним порошком. Сендвіч-пластина з пінополіуретану розміщена між двома алюмінієвими площинами. Для обчислення власної частоти використано теорію Кірхгофа для вібраційного рівняння сендвіч-пластини. Композитні рівняння мікрочастинок дозволили оцінити характеристики жорсткості піноалюмінієвої основи. Результати показали ефективний вплив наповнювальної піни; згідно із аналізом вільної вібрації, вільну вібрацію та статичну поведінку сендвіч-плит можна покращити за допомогою використання мікросферичної порошкоподібної піни у вільних сферичних порожнинах базового спіненого ядра. У порівнянні з іншими ядрами, сендвіч-пластина з піноалюмінію прогинається менше.
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