Journals / Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi / 2022 / Cilt: 11 - Sayı: 1

Buckling analysis of Timoshenko columns having variable cross-section by complementary functions method

Değişken kesitli Timoshenko kolonlarının tamamlayıcı fonksiyonlar yöntemiyle burkulma analizi

Pages
122–128
Publication Date
2022-10-21
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The applicability of the CFM to the elastic buckling problem of variable cross-section columns has been demonstrated.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, the buckling of variable cross-section columns under axial load is investigated by the Complementary Functions Method (CFM).
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Key Findings & Data:Columns whose cross-sectional properties change continuously throughout the element are modeled according to the Timoshenko beam theory.
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Conclusion & Impact:The applicability of the CFM to the elastic buckling problem of variable cross-section columns has been demonstrated.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Burkulma analizi · Tamamlayıcı fonksiyonlar yöntemi · Timoshenko kolonu

Abstract

In this study, the buckling of variable cross-section columns under axial load is investigated by the Complementary Functions Method (CFM). Columns whose cross-sectional properties change continuously throughout the element are modeled according to the Timoshenko beam theory. By using the internal force-strain relations and equilibrium equations, a set of first-order ordinary differential equations governing the buckling behavior is obtained. The effects of different taper values and length/thickness ratios on the buckling load along the element are investigated for different boundary conditions. The calculated dimensionless buckling loads are tested with the available values in the literature and the results obtained from the Abaqus finite element program. The applicability of the CFM to the elastic buckling problem of variable cross-section columns has been demonstrated.

Özet

Bu çalışmada, eksenel yük altında değişken kesitli kolonların burkulması Tamamlayıcı Fonksiyonlar Yöntemi (TFY) ile incelenmiştir. Eleman boyunca kesit özellikleri sürekli değişen kolonlar Timoshenko kiriş teorisine göre modellenmiştir. İç kuvvet-şekil değiştirme ilişkileri ve denge denklemleri kullanılarak burkulma davranışını idare eden birinci mertebeden adi diferansiyel denklem takımı elde edilmiştir. Farklı sınır koşulları için eleman boyunca farklı koniklik değerlerinin ve uzunluk/kalınlık oranlarının burkulma yükü üzerindeki etkileri araştırılmıştır. Hesaplanan boyutsuz burkulma yükleri literatürdeki mevcut değerler ve Abaqus sonlu elemanlar programından elde edilen sonuçlar ile test edilmiştir. TFY'nin değişken kesitli kolonların elastik burkulma problemine uygulanabilirliği gösterilmiştir.

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Cite This Article

TEMEL, B., SİVRİ, B. (2022). Buckling analysis of Timoshenko columns having variable cross-section by complementary functions method. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 11 - Sayı: 1, 122–128. https://ajindex.com/articles/584375

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