بررسی عددی مقاومت بالستیکی پانل‌های ساندویچی با هسته‌های‌ موجدار در برابر برخوردهای پرسرعت

Alavi, Ali; Solooki, Mohammad

Volume 19, Issue 2 (8-2024) مواد پرانرژی 2024, 19(2): 111-125 | Back to browse issues page

‎ 20.1001.1.17353629.1403.19.2.6.7

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Alavi A, Solooki M. بررسی عددی مقاومت بالستیکی پانل‌های ساندویچی با هسته‌های‌ موجدار در برابر برخوردهای پرسرعت. مواد پرانرژی 2024; 19 (2) : 6
URL: http://isaem.ir/article-1-1502-en.html

بررسی عددی مقاومت بالستیکی پانل‌های ساندویچی با هسته‌های‌ موجدار در برابر برخوردهای پرسرعت

Ali Alavi ^*

, Mohammad Solooki

Boali Sina University, Hamedan , alavi1338@yahoo.com

Abstract: (349 Views)

Sandwich panels are usually widely used in various industries, including aerospace, marine, and automotive industries, due to their strength-to-weight ratio and high energy absorption. . In this paper, the ballistic behavior of sandwich panels with aluminum-polyurea face sheets and aluminum cores in the form of semi-cylindrical waves or with hemispherical holes (single or multi-layer) has been investigated. To increase the ballistic resistance of sandwich panels, the effects of core geometry, core layout, polyurea plates, number of core layers, and projectile impact location at high velocities (50 to 400 m/s) have been simulated A number of 12 different modes were examined in terms of the placement of the face sheets and core layers. The results of the investigation showed that in single-layer cores, by changing the geometry of the core from semi-cylindrical to hemispherical, the ballistic limit velocity has increased by 16%. . In two-layer cores, by shifting the layers with different waves (from semi-cylindrical -hemispherical to hemispherical- semi-cylindrical), the ballistic limit velocity has increased by 4%. The use of polyurea in the sandwich panel increased the ballistic limit velocity by 15%. By increasing the number of semi-cylindrical and hemispherical core layers, the ballistic limit velocity increased by 32 and 29%, respectively. Among the investigated sandwich panels, the values of the ballistic limit and the ratio of expended energy per unit of mass are the best SP2 panel (sandwich panel with aluminum and polyurea face sheets with a thickness of 1 mm and a semi-cylindrical core (double layer) with a thickness of 0.5 mm and radius arc 10 mm) compared to the weakest ones SP5 (sandwich panel with aluminum and polyurea face sheets with a thickness of 1 mm and a hemispherical core with a thickness of 0.5 mm and an arc radius of 20 mm) difference of 92.3% and 254.4% respectively.

Article number: 6

Keywords: Sandwich panel, High Velocity Impact, Ballistic Resistance, Polyurea, Numerical Simulation

Full-Text [PDF 1446 kb] (19 Downloads)

Type of Study: Research | Subject: بالستيک داخلي و خارجي
Published: 2025/02/2