Flexural Bending and Fatigue Analysis of Functionally Graded Viscoelastic Materials: Experimental and Numerical Approaches

Е.К. Нджім; С.Е. Садік; М.С. Аль-Дін Тагір; М.А. Флайїх; Л. Хаджь

doi:10.15330/pcss.24.4.628-639

Автор(и)

Е.К. Нджім Міністерство промисловості та корисних копалин, Державна компанія гумової та шинної промисловості, Ірак
С.Е. Садік Технічний університет Аль-Фурат Аль-Аусат, Ірак
М.С. Аль-Дін Тагір Університет Імама Джафара Аль-Садіка, Ірак
М.А. Флайїх Університет Аль-Мустакбал, Хілла, Вавилон, Ірак
Л. Хаджь Університет Тіарет, Тіарет, Алжир

DOI:

https://doi.org/10.15330/pcss.24.4.628-639

Ключові слова:

полімерні матеріали, механічні характеристики, зношення

Анотація

У роботі синтезовано термопластичний полімер із змінною щільністю в одному напрямку за допомогою технології адитивного виробництва для вивчення динамічних і статичних характеристик функціонально градуйованих в’язкопружних матеріалів (FGVM). Для опису механічних властивостей FGVM було запропоновано аналітичне формулювання, засноване на формулюванні сигмоподібного закону. Експериментальну частину виконували на зразках, надрукованих 3D-друком, виконуючи різні випробування, щоб перевірити ефективність таких матеріалів. Крім того, для оцінки властивостей конструкції на вигин застосовано метод скінченних елементів. Детально проаналізовано вплив параметрів FG та геометричних властивостей на тривалість навантаження при згині та зворотному вигині. Результати показують, що збільшення пористості з 10% до 30% при степеневому індексі (k = 2) зменшує міцність на вигин на 31,25 відсотка та прогин приблизно на 11,2 відсотка для зразків VE. Зміна показника степеневого закону від 0,5 до 10 збільшує витримку на міцність на 35 %.

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