Interaction of global and local buckling in welded RHS compression members

Degée, Hervé; Detzel, Annette; Kuhlmann, Ulrike

doi:10.1016/j.jcsr.2008.01.032

Cited by 51 publications

(41 citation statements)

References 4 publications

(7 reference statements)

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“…Eqs. (7)(8), (12) and (13), can resolve the four undetermined coefficients in f wc and f f for the pinned and rigid joint cases respectively. However, for the semi-rigid joint case, the fourth boundary condition cannot be obtained directly as for the pinned and rigid joint cases above.…”

Section: Modal Descriptionsmentioning

confidence: 99%

“…Buckling instabilities are practically always the governing failure mode of such structures [1,2,3]; moreover, compression members made from slender plate elements are vulnerable to a variety of different buckling phenomena [4,5,6,7,8]. The interaction between individual modes can lead to a profound change in the post-buckling behaviour, even though these modes may be stable when triggered in isolation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interactive buckling in long thin-walled rectangular hollow section struts

Shen

Wadee

Sadowski

2017

International Journal of Non-Linear Mechanics

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An analytical model describing the nonlinear interaction between global and local buckling modes in long thin-walled rectangular hollow section struts under pure compression founded on variational principles is presented. A system of nonlinear differential and integral equations subject to boundary conditions is formulated and solved using numerical continuation techniques. For the first time, the equilibrium behaviour of such struts with different cross-section joint rigidities is highlighted with characteristically unstable interactive buckling paths and a progressive change in the local buckling wavelength. With increasing joint rigidity within the cross-section, the severity of the unstable post-buckling behaviour is shown to be mollified. The results from the analytical model are validated using a nonlinear finite element model developed within the commercial package Abaqus and show excellent comparisons. A simplified method to calculate the local buckling load of the more compressed web undergoing global buckling and the corresponding global mode amplitude at the secondary bifurcation is also developed. Parametric studies on the effect of varying the length and cross-section aspect ratio are also presented that demonstrate the effectiveness of the currently developed models.

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Section: Modal Descriptionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interactive buckling in long thin-walled rectangular hollow section struts

Shen

Wadee

Sadowski

2017

International Journal of Non-Linear Mechanics

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“…4). The verification of the presented models was performed in accordance with EN 1993-1 [10] and experimental data [1]. A comparative analysis of the results for three columns of different lengths with square hollow sections (SHSs) is given in Table 3.…”

Section: Discussion and Verification Of Resultsmentioning

confidence: 99%

“…The phenomenon of stability of the columns under load encompasses a complex mechanism of the interactive behaviour of local and global buckling [1]. The largest number of the here presented papers analyse the behaviour of a structure in terms of global stability.…”

Section: Introductionmentioning

confidence: 99%

Design of Columns in Terms of Stability

Đelošević

Vukajlov

Tepic

et al. 2018

TFAMENA

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SummaryIn this paper, we investigate global and local stability of columns with an open and a closed thin-walled cross section. The proposed model of global stability is made of two deformable elements connected with an elastic joint. Stiffness of the elastic joint represents local discontinuity of the cross section of the column caused by the loss of stability of individual plates. The model of local stability of the columns is conceptualized on the principle of continuity of individual plates of the cross section. The coefficients of local buckling are defined as geometric parameters of the column with a rectangular hollow section (RHS) and a U-shaped cross section. The dominant parameters that influence the interactive behaviour of local and global buckling are the slenderness of plates and the column as a whole. The basic function of the developed models is to identify the stability mechanism in terms of better estimation of the critical force and higher load capacity.

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“…The interaction between local and overall buckling of columns made of carbon steel has been studied thoroughly [13][14][15], and the investigated cross-section shapes have included box sections [16,17], I-sections [18][19][20][21][22][23] and channel sections [24,25]. However, the interactive column buckling behaviour of welded stainless steel sections may differ due to the non-linear material properties [26].…”

Section: Introductionmentioning

confidence: 99%