RİTZ YÖNTEMİ İLE DEĞİŞKEN KESİTLİ KOLONLARIN BURKULMA ANALİZİ

Year 2019, , 452 - 458, 26.06.2019

Bekir Akgöz

https://doi.org/10.21923/jesd.539288

Cited By: 4

Abstract

Bu çalışmada, eksenel bir basınç yükü etkisi altındaki
değişken kesitli kolonların burkulma analizi gerçekleştirilmiştir. Kesitin
kolon uzunluğu boyunca sürekli değiştiği dikkate alınmıştır. Büyük narinlik
oranına sahip üniform olmayan ince kolonları modellemek için klasik kiriş
teorisi (kayma deformasyonu etkisiz) kullanılmıştır. Çeşitli koniklik oranları
ve sınır koşulları için üniform olmayan kolonların kritik burkulma yüklerini
elde etmek için Ritz yöntemi uygulanmıştır. Değişken kesitli kolonların burkulma
yükleri üzerindeki koniklik oranı ve sınır koşullarının etkilerini incelemek
için detaylı bir parametrik çalışma gerçekleştirilmiştir. Bu analizin
geçerliliğini ve hassasiyetini kanıtlamak üzere literatürdeki mevcut ilgili
sonuçlar ile bazı karşılaştırmalı tablolar sunulmuştur.    

Keywords

Burkulma, Kolon, Koniklik oranı, Düzensizlik, Sınır koşulları

BUCKLING ANALYSIS OF COLUMNS WITH VARIABLE CROSS-SECTION VIA RITZ METHOD

Abstract

In this study, buckling analysis of columns with variable
cross-section is performed under an axial compressive load. It is considered
that the cross-section varies constantly along the length of the column.
Classical beam theory (without effect of shear deformation) is used to model
the non-uniform thin column with a large slenderness ratio. Ritz method is
applied to obtain the critical buckling loads of the non-uniform columns for
various taper ratios and boundary conditions. A detailed parametric study is
performed to investigate the influences of taper ratio and boundary conditions
on the buckling loads of column with variable cross-section. In order to
demonstrate the validity and sensitivity of the present analysis, some
comparative tables with the related results available in the literature are
presented.

Keywords

Buckling, Column, Taper ratio, Non-uniformity, Boundary conditions

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