KOMPOZİT EĞRİSEL KİRİŞLERDE KESİT ÇARPILMASI GÖZETİLEREK NORMAL VE KAYMA GERİLMELERİNİN KARIŞIK SONLU ELEMANLARLA ANALİZİ

Year 2019, Volume: 8 Issue: 3, 16 - 29, 20.12.2019

Umit Necmettin Arıbas

https://doi.org/10.28948/ngumuh.619591

Cited By: 1

Abstract

Bu çalışmada, karşık
sonlu eleman analizi ile kompozit eğrisel kirişlerin kesit çarpılması gözetilen
normal ve kayma gerilmeleri incelenmiştir. İki düğüm noktalı eğrisel sonlu
elemanlar yirmi dört adet bölge değişkenine sahiptir. Bünye bağıntıları, üç
boyutlu elastisite kuramından ortotropik kompozit çubuklar için türetilmiş,
kuple etkiler ve Poisson oranları gözetilmiştir. Karışık sonlu eleman
formülasyonuna kesit çarpılması gözetilen burulma rijitliğinin yerdeğiştirme
tabanlı sonlu eleman formülasyonu entegre edilmiştir. Normal gerilmelerin
hesabında ilgili kesitin karışık sonlu eleman analizinden elde edilen eğrilikleri
kullanılmıştır. Kayma gerilmeleri ise karışık sonlu eleman analizi sonucu
eksenel dönme açısı ve çarpılma fonksiyonu kullanılarak yer değiştirme tabanlı
sonlu elemanlarla elde edilmiştir. Kompozit bir kirişin boyutsuz normal ve
kayma gerilmeleri literatür ile kıyaslanmıştır. Kompozit dairesel bir kirişin
normal ve kayma gerilmeleri SOLID186 elemanların sonuçları ile
karşılaştırılmıştır. Kompozit eğrisel kirişlerde malzeme sabitleri oranının,
kesit geometrisi ve takviye kalınlığının en büyük normal ve kayma gerilmeleri
ve tabakalar arası normal gerilmeler üzerindeki etkisi incelenerek literatüre
kazandırılmıştır.

Keywords

Gerilme, Çarpılma, Kompozit, Eğrisel Kiriş, Karışık Sonlu Eleman

Supporting Institution

İstanbul Teknik Üniversitesi Bilimsel Araştırma Projeleri Birimi

Project Number

MGA-2017-4739

Thanks

Bu araştırmaya destek olan İstanbul Teknik Üniversitesi Bilimsel Araştırma Projeleri birimine teşekkür ederim (Proje no: MGA-2017-4739)

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