Dynamic analysis of inelastic primary–secondary systems

Adam, Christoph; Fotiu, Peter A.

doi:10.1016/s0141-0296(98)00073-x

Cited by 43 publications

(18 citation statements)

References 17 publications

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“…Thus, the analysis of Equation (2) as a single dynamic unit would require the solution of a complex eigenvalue problem. This can be avoided, if Equations (2) are solved by an iterative synthesis technique suggested by Adam and Fotiu [13]. Thereby, W is decomposed into the mode shapes i (i = 1; 2; 3) of the primary structure,…”

Section: Numerical Analysis By Iterative Synthesismentioning

confidence: 99%

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Dynamics of elastic-plastic shear frames with secondary structures: shake table and numerical studies

Adam

2001

Earthquake Engng. Struct. Dyn.

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Results from experimental and numerical studies of earthquake-excited small-scale primary-secondary structures are presented. The primary structure considered is a plane three-storey shear frame with a fundamental frequency of 5:5 Hz. The columns of the ÿrst oor are built with soft aluminium and they are stressed beyond its linear range of behaviour. After each test the elastic-plastic columns are replaced by a new set of undeformed virgin aluminium bars. The elastic-plastic shear frame is tested with and without an attached secondary structure. The secondary structure is modelled as an elastic SDOF oscillator, and its natural frequency is tuned to the fundamental frequency of the shear frame. Alternatively, the oscillator is mounted on the horizontal beam of the second and third oor. The base excitation of the structural model is characterized by a broad band random process with constant spectral density in a frequency range between 3 and 30 Hz. In the numerical study, the digital recorded acceleration of the base excites the mechanical model of the investigated structures. Numerical outcomes assuming ÿctitious unlimited elastic material behaviour of the shear frame are set in contrast to results from experiments and computational simulations where the measured non-linear force displacement relation of the elasticplastic oor is approximated by a piecewise linear curve. The e ect of elastic-plastic materials on the dynamic interaction between primary and secondary structure is shown and the di erence to unlimited elastic material behaviour is worked out in detail.

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Section: Numerical Analysis By Iterative Synthesismentioning

confidence: 99%

“…Moreover, secondary systems are frequently designed to resist large inelastic deformations, too. As pointed out in the literature [10][11][12][13][14] the non-linear behaviour of the main bearing structure and the secondary system may signiÿcantly a ect the behaviour of the latter.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of elastic-plastic shear frames with secondary structures: shake table and numerical studies

Adam

2001

Earthquake Engng. Struct. Dyn.

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“…However, most of these studies dealt with the behavior of nonstructural components attached to linear primary structures [viz., [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]]. Studies have also shown that the nonlinear behavior of a primary structure and nonstructural components may significantly affect the response of nonstructural components, either in form of a reduction or an amplification over the corresponding linear response [21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Seismic response of nonstructural components supported by a 4-story SMRF: Effect of nonlinear soil–structure interaction

Raychowdhury

Ray-Chaudhuri

2015

Structures

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“…An expansion in their work is introduced by Papageorgiou and Gantes [10,11] where a numerical approach is adopted rather than an analytical one, permitting thus to account for earthquake loading and nonlinear material behaviour and allow for the transient part of the response, and a modification to the decoupling procedure is tested to investigate its effect on the decoupling error. An enhancement to the decoupling procedure can be implemented by performing an iterative approach, as shown by Adam and Fotiu [12], who minimize the decoupling error by performing rapidly converging iterations.…”

Section: Introductionmentioning

confidence: 99%