Politeknik Dergisi 2147-9429 Gazi Üniversitesi 10.2339/politeknik.1498060 Dynamics, Vibration and Vibration Control Machine Theory and Dynamics Dinamikler, Titreşim ve Titreşim Kontrolü Makine Teorisi ve Dinamiği Alüminyum Petek Sandviç Panellerde Dinamik Tepki Değişkenliğinin PCE ve Kriging Tabanlı Meta-Model Kullanılarak Değerlendirilmesi Evaluation of dynamic response variability in aluminum honeycomb sandwich panels using PCE and Kriging-based metamodel https://orcid.org/0000-0001-5983-3953 Oktav Akın ALANYA ALAADDİN KEYKUBAT ÜNİVERSİTESİ https://orcid.org/0000-0001-9887-5531 Başaran Murat Alper ALANYA ALAADDİN KEYKUBAT ÜNİVERSİTESİ 04 21 2026 29 4 1 12 06 08 2024 04 29 2025 Copyright © 1998, Politeknik Dergisi 1998 Politeknik Dergisi

Bu çalışmanın amacı, ticari alüminyum petek sandviç panellerdeki (APSP) dinamik tepki değişkenliğini modellemektir. Özdeş 35 ticari APSP üzerinde deneysel modal analiz çalışması gerçekleştirilmiştir. Panelin tahmini ağırlığına göre 10.000 örnek temel alınarak bir hesaplamalı model oluşturulmuştur. İlk 10 esnek mod için 35 numunenin deneysel modal frekansları, deterministik hesaplama modelinin sonuçlarıyla karşılaştırılmış ve sapmalar hata olarak nitelenmiştir. Kaplama levhalarının kalınlıkları ve çekirdek hücre duvarının kalınlığı belirsizlik kaynakları olarak kabul edilmiştir. Hata ve stokastik değişkenler arasındaki ilişkiyi ifade etmek için PCE-Kriging adı verilen veri güdümlü bir meta-model oluşturulmuştur. Sonuçlar, düşük frekanslardaki değişkenliğin kaplama tabakalarından kaynaklandığını, yüksek frekanslardaki değişkenliğin ise çekirdek tarafından domine edildiğini göstermektedir.

The aim of this study is to model the dynamic response variability in commercial aluminum honeycomb sandwich panels. An experimental modal analysis is performed on 35 identical commercial AHSPs. Based on 10,000 samples, a computational model is constructed according to the estimated weight of the panel. The modal frequencies of the 35 samples for the first 10 flexible modes are compared with the computational results and deviations are referred to as errors. The thickness of the facing sheets and thickness of the cell wall of the core are considered as sources of uncertainty. A data-driven meta-model called PCE-Kriging is created.

 Kriging modal analysis polynomial chaos expansion (PCE) uncertainty quantification variability Kriging Modal analiz Çokterimli kaos açılımı Belirsizlik sayısallaştırma Değişkenlik This study was supported by Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant 122M921. TUBITAK 122M921 [1] Xiong J, Du Y, Mousanezhad D, Eydani Asl M, Norato J, Vaziri A., “Sandwich structures with prismatic and foam cores: A review”, Advanced Engineering Materials, 21(1):1800036, (2019). [2] Tan HL, He ZC, Li KX, Li E, Cheng AG, Xu B., “In-plane crashworthiness of re-entrant hierarchical honeycombs with negative Poisson’s ratio”, Composite Structures, 1;229:111415, (2019). [3] Li QQ, Li E, Chen T, Wu L, Wang GQ, He ZC., “Improve the frontal crashworthiness of vehicle through the design of front rail”, Thin-Walled Structures, 1;162:107588, (2021). 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