Application of the constrained finite strip method for the buckling design of cold-formed steel columns and beams via the direct strength method

2011 ◽  
Vol 89 (21-22) ◽  
pp. 2020-2027 ◽  
Author(s):  
Z. Beregszászi ◽  
S. Ádány
Keyword(s):  
Steel Columns ◽  
Finite Strip ◽  
Strip Method ◽  
Direct Strength Method ◽  
Finite Strip Method ◽  
Cold Formed Steel

scholarly journals STRENGTH EVALUATION OF COLD-FORMED STEEL COLUMNS USING THE RESULTS OF FINITE STRIP AND FINITE ELEMENT LINEAR STABILITY ANALYSIS

2009 ◽  
Vol 1 (1) ◽  
pp. 40-43 ◽  
Author(s):  
Luís C. Prola ◽  
Igor Pierin
Keyword(s):  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Steel Columns ◽  
Finite Strip ◽  
Strip Method ◽  
Finite Strip Method ◽  
Global Buckling ◽  
Cold Formed Steel ◽  
Thin Walled

Most cold-formed steel columns display open and rather thin-walled cross-sections which mean that their structural behaviour is strongly affected by local and global buckling. Th e local mode, that occurs for shorter profi les, is characterized by (i) the local plate mode (LPM) characterized by the simultaneous flexural buckling of the web and fl anges and (ii) by the distortional mode (DM) characterized by the displacements of flange-stiff ener edges (that remain plane). The global mode occurring for long profi les is characterized by (i) the fl exural mode (FM) characterized by the translation of the whole section in the direction of the major principal axis and (ii) by the fl exural-torsional mode (FTM) characterized by the simultaneous translation and rotation of the whole section. Th e possibility of using the results of linear stability analysis in the national codes of thin-walled cold-formed steel structural elements (for instance, European and Brazilian Codes) arises, i.e. local and global buckling instability modes and corresponding bifurcation stresses determining the ultimate strength of members. Two powerful numerical methods are chosen to perform a linear stability analysis of a cold-formed steel structural member: (i) the Finite Strip Method, (i1) the Semi-Analytical Finite Strip Method (trigonometric functions are used in the approximation of displacement) used for simply supported boundary conditions, (i2) the Spline Finite Strip Method (‘spline’ functions are used in the approximation of displacement) used other boundary conditions and (ii) the Finite Element Method. The linear local and global stability results of for Z, C and rack cold-formed columns are used to obtain ultimate strength through the procedures adopted in the Eurocode 3, Part 1.3 and in the Brazilian Code (NBR 14.762/2001). The obtained numerical estimates by specifi cations are compared with experimental results available in literature.

Stability of stiffened cruciform steel columns under shear and compression by the complex finite strip method

2019 ◽  
Vol 136 ◽  
pp. 221-234
Author(s):  
H. Naderian ◽  
R. Sanches ◽  
O. Mercan ◽  
P.J. Kushner ◽  
M. Azhari ◽  
...  
Keyword(s):  
Steel Columns ◽  
Finite Strip ◽  
Strip Method ◽  
Finite Strip Method

Review: Constrained finite strip method developments and applications in cold-formed steel design

2014 ◽  
Vol 81 ◽  
pp. 2-18 ◽  
Author(s):  
Zhanjie Li ◽  
Jean C. Batista Abreu ◽  
Jiazhen Leng ◽  
Sándor Ádány ◽  
Benjamin W. Schafer
Keyword(s):  
Finite Strip ◽  
Strip Method ◽  
Finite Strip Method ◽  
Cold Formed Steel ◽  
Steel Design
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