Tabaka Diziliminin Simetrik Tabakalı Kompozit Plakların Titreşimine Etkisi

Öz

Ortotrop ve simetrik tabakalı kompozit plakaların serbest titreşim özellikleri, sayısal parametrik çalışma ile incelenmiştir. Basit mesnetli sınır şartlarına sahip kare cam/epoksi tabakalı plakalar, ANSYS MAPDL'de sonlu eleman yöntemi kullanılarak analiz edilmiş ve analiz süreci Python tabanlı bir arayüz aracılığıyla tamamen otomatikleştirilmiştir. Üç ila on katman sayısı değiştirilerek ve 0°, ±30°, ±45°, ±60° ve 90° lif yönelimlerine sahip simetrik tabaka dizilimleri kullanılarak toplam 148 tabaka konfigürasyonu ele alınmıştır. Lif yönelimi, tabaka dizilimi ve tabaka sayısının etkilerini incelemek için ilk dört doğal frekans değerlendirilmiştir. Sonuçlar, 0° lif yönelimli ortotrop tabakaların tabaka sayısından bağımsız frekanslar sergilediğini, simetrik tabakalı plakaların ise özellikle düşük modlarda tabaka dizilimine ve lif yönelimine oldukça duyarlı olduğunu göstermektedir. Çapraz tabakalı plaklar, artan eğilme rijitliği nedeniyle genellikle daha yüksek modlarda açılı tabakalı plaklardan daha yüksek frekanslar vermektedir. Bulgular, tabakalı kompozit plakaların titreşim odaklı tasarımına ilişkin pratik bilgiler sağlamaktadır.

Anahtar Kelimeler

• Tabakalı kompozit plak
• Serbest titreşim
• Simetrik tabakalı plak
• Tabaka dizilişi
• Doğal frekans
• PyMAPDL

Destekleyen Kurum

YOK

Etik Beyan

Bu makalenin yazar(lar)ı çalışmalarında kullandıkları materyal ve yöntemlerin etik kurul izni ve/veya yasal-özel bir izin gerektirmediğini beyan ederler.

Teşekkür

YOK

The Effect of Stacking Sequence on the Vibration of Symmetric Laminated Composite Plates

Öz

The free vibration characteristics of orthotropic and symmetrically laminated composite plates are investigated through numerical parametric study. Square glass/epoxy laminated plates with simply supported boundary conditions are analyzed using the finite element method in ANSYS MAPDL, with the analysis process fully automated via a Python-based interface. A total of 148 laminate configurations considered by varying the number of three to ten layers and employing symmetric stacking sequences with fiber orientations of 0°, ±30°, ±45°, ±60°, and 90°. The first four natural frequencies are evaluated to examine the effects of fiber orientation, stacking sequence, and layer number. The results show that orthotropic laminates with uniform 0° orientation exhibit layer-number-independent frequencies, whereas symmetrically laminated plates are highly sensitive to stacking sequence and fiber orientation, especially in lower modes. Cross-ply laminates generally yield higher frequencies than angle-ply laminates in higher modes due to increased bending stiffness. The findings provide practical insights into the vibration-oriented design of laminated composite plates.

Anahtar Kelimeler

• Laminated composite plates
• Free vibration
• symmetric laminates
• Stacking sequence
• Natural frequencies
• PyMAPDL

Destekleyen Kurum

NA

Etik Beyan

The author(s) of this article declare that the materials and methods used in this study do not require ethical committee permission and/or legal-special permission.

Teşekkür

NA

Kaynakça

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