A Simplified Procedure for the Assessment of Second-Order Effects in Three-Dimensional Framed Structures

2009 ◽  
Author(s):  
A.C. Sousa ◽  
M. Pereira ◽  
R.C. Barros
Keyword(s):  
Three Dimensional ◽  
Second Order ◽  
Order Effects ◽  
Framed Structures ◽  
Second Order Effects ◽  
Simplified Procedure

Global Buckling of Frames with Laced Compression Members

2016 ◽  
Vol 837 ◽  
pp. 103-108 ◽  
Author(s):  
Michal Kovac ◽  
Zsuzsanna Vanik
Keyword(s):  
Order Theory ◽  
Second Order ◽  
Order Effects ◽  
Engineering Practice ◽  
Buckling Mode ◽  
Column Method ◽  
Global Buckling ◽  
Second Order Effects ◽  
Buckling Length ◽  
Simplified Procedure

The planar frames whose members consist of a laced built-up members are often used in civil engineering practice. For chords of these structures the 1st order theory internal forces and the assessment by equivalent column method are mostly used. In the equivalent column method the buckling length according to the global buckling mode of the structures should be used. If the distance between neighboring nodes is used as the buckling length of the chord, which is the common case, the second order effects with only the bow imperfections between nodes are taken into account in the equivalent column method. For frames sensitive to buckling in a sway mode the second order effects on structures with initial sway imperfection should be taken into account. Therefore, also in frames with the laced compression columns, where the effects of additional sway deformation cause additional normal forces in the chords, the sway imperfection should be applied and the second order in frame analysis should be performed to check these additive forces. This paper deals with the simplified procedure how to evaluate additive forces due to second order effects on the structure with the global sway imperfection.

scholarly journals ANALYSIS OF SECOND-ORDER EFFECTS EVALUATION OF STEEL FRAMES BEHAVIOUR

2020 ◽  
Vol 12 (1) ◽  
pp. 8-14
Author(s):  
Raminta Venslavavičiūtė ◽  
Kęstutis Urbonas ◽  
Vaidotas Šapalas
Keyword(s):  
Structural Engineering ◽  
Steel Frame ◽  
Second Order ◽  
Order Effects ◽  
Rotational Stiffness ◽  
Framed Structures ◽  
Calculation Results ◽  
Steel Frame Structures ◽  
Second Order Effects ◽  
Rigid Joints

The evaluation of second-order effects of steel framed structures can provide different analysis results than using linear analysis methods. In various structural engineering literature were distinguished different methods of analysis: taking or without taking into account second-order effects. It depends on the sensitivity to the horizontal actions. The slenderer the structure, the more sensitive it is to horizontal actions. Using nonlinear methods, the sensitivity of steel frame to second-order impact is considered. This paper shows the importance of evaluations of the second-order effects in behaviour of steel frame structures. Performed investigations reveal the influence of the rotational stiffness of the joints to the behaviour of whole framed structure. Calculation results show that decreased flexibility of the semi-rigid joints increase sensitivity of the framed structure to the second-order effects and vice versa. The identified interdependence between the sensitivity to the second-order effects and the flexibility of the semi-rigid joints highlights the importance of evaluation of such dependencies.

scholarly journals The effects of large displacements on the earthquake response of tall concrete frame structures

1980 ◽  
Vol 13 (4) ◽  
pp. 317-328 ◽  
Author(s):  
Peter J. Moss ◽  
Athol J. Carr
Keyword(s):  
Analytical Techniques ◽  
Second Order ◽  
Order Effects ◽  
Large Displacements ◽  
Framed Structures ◽  
Concrete Frame ◽  
Inelastic Analysis ◽  
Second Order Effects ◽  
Lateral Displacements ◽  
Geometric Effects

Many analytical techniques have been developed for the inelastic analysis of multi-storey framed structures subjected to earthquake excitations. Most of these analyses have ignored the influence of the geometric effects due to the large lateral displacements on the response of the structure. However, there has been an increasing interest recently in these second order effects and, in particular, their consequences for the design of the column members in the frame. This paper describes the modification of an inelastic frame analysis to include the effects of large displacements and then the application
to three typical New Zealand concrete structures subjected to a variety of earthquake excitations. Comparisons are then made with results obtained from analyses ignoring these effects. The results are then reviewed in order to determine the nature of the problems, to determine when these second order effects should be considered and discusses methods of limiting these displacements.

Resistive switching kinetics and second-order effects in parylene-based memristors

2020 ◽  
Vol 117 (24) ◽  
pp. 243501
Author(s):  
Anna N. Matsukatova ◽  
Andrey V. Emelyanov ◽  
Anton A. Minnekhanov ◽  
Aleksandr A. Nesmelov ◽  
Artem Yu. Vdovichenko ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Second Order ◽  
Order Effects ◽  
Second Order Effects

Study of Second‐order Effects of Steel Posts Supporting Rockfall Flexible Barriers

ce/papers ◽  
2021 ◽  
Vol 4 (2-4) ◽  
pp. 2249-2254
Author(s):  
Jian‐Wei He ◽  
Lei Zhao ◽  
Yao‐Peng Liu ◽  
Siu‐Lai Chan
Keyword(s):  
Second Order ◽  
Order Effects ◽  
Second Order Effects ◽  
Flexible Barriers

Pavlovian conditioning of sexual arousal: First- and second-order effects.

1985 ◽  
Vol 11 (4) ◽  
pp. 598-610 ◽  
Author(s):  
Edward Zamble ◽  
G. Marilyn Hadad ◽  
John B. Mitchell ◽  
Tim R. H. Cutmore
Keyword(s):  
Pavlovian Conditioning ◽  
Sexual Arousal ◽  
Second Order ◽  
Order Effects ◽  
Second Order Effects

On second order effects in a glavanic cell

1979 ◽  
Vol 100 (1-2) ◽  
pp. 607-624 ◽  
Author(s):  
M. Sluyters-Rehbach ◽  
J. Struys ◽  
J.H. Sluyters
Keyword(s):  
Second Order ◽  
Order Effects ◽  
Second Order Effects
Sign in / Sign up

Export Citation Format

Share Document