Quasi static and dynamic inelastic buckling and failure of folded-plate structures by a full-energy finite strip method

Milašinović, Dragan D.; Majstorović, D.; Vukomanović, Radovan

doi:10.1016/j.advengsoft.2017.07.013

Cited by 11 publications

(9 citation statements)

References 21 publications

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“…The RDA uses rheology and dynamics to determine the response of a dynamic system to excitation, and it is, therefore, different from plasticity theory or damage mechanics (Murakami, 2012). This is a novel theory derived for solving dynamic fatigue problems (Milašinović, 2007, 2019), as well as for the analysis of quasi-static problems, where the main expressions are derived taking into account the zero excitation frequency (Milašinović, 2015; Milašinović et al , 2018).…”

Section: Rheological–dynamical Fatigue Theory Short Overviewmentioning

confidence: 99%

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Fatigue damage in bending of reinforced concrete frames using non-destructive tests for dynamic strength of the cylinder

Milašinović

Landović

Goleš

2021

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PurposeThe purpose of this paper is to contribute to the solution of the fatigue damage problem of reinforced concrete frames in bending.Design/methodology/approachThe problem of fatigue damage is formulated based on the rheological–dynamical analogy, including a scalar damage variable to address the reduction of stiffness in strain softening. The modal analysis is used by the finite element method for the determination of modal parameters and resonance stability of the selected frame cross-section. The objectivity of the presented method is verified by numerical examples, predicting the ductility in bending of the frame whose basic mechanical properties were obtained by non-destructive testing systems.FindingsThe modal analysis in the frame of the finite element method is suitable for the determination of modal parameters and resonance stability of the selected frame cross-section. It is recommended that the modulus of elasticity be determined by non-destructive methods, e.g. from the acoustic response.Originality/valueThe paper presents a novel method of solving the ductility in bending taking into account both the creep coefficient and the aging coefficient. The rheological-dynamical analogy (RDA) method uses the resonant method to find material properties. The characterization of the structural damping via the damping ratio is original and effective.

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Section: Rheological–dynamical Fatigue Theory Short Overviewmentioning

confidence: 99%

“…According to the research (Milašinović et al , 2018), two Poisson's ratios may be determined as:where normalΨ is the elastic moduli ratio, which includes dynamic modulus of elasticity ED:…”

Section: Rheological–dynamical Fatigue Theory Short Overviewmentioning

confidence: 99%

Fatigue damage in bending of reinforced concrete frames using non-destructive tests for dynamic strength of the cylinder

Milašinović

Landović

Goleš

2021

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“…The non-linear term is the conventional stiffness matrix ( ) K C of the system, which depends on the inelastic constitutive matrix C, according to the RDA. 2D compliance matrix C -1 is 'degenerated' directly from 3D theory [10] as follows…”

Section: Inelastic Buckling Analysis By Fsm and Rdamentioning

confidence: 99%

“…Simply supported ideally straight thin-walled box girder that consists of two webs of 100 mm and two flanges of 60 mm has been analyzed in details and results are compared with other theories for thickness of t = 2 mm [10,11]. The girder is compressed axially.…”

Section: Box Girdersmentioning

confidence: 99%

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Ultimate Strength of Compressed Slabs and Box Girders

Milašinović¹

2017

STEPGRAD

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A theoretical investigation into the effectiveness of a plate thickness against the ultimate strength of a compressed slabs and box girders is carried out. Series of the buckling analyses, the elastic, the viscoplastic and the ultimate strength are performed by the rheological-dynamical inelastic theory and the finite strip method on a slabs and box girders under thrust. In the analytical method, rheological-dynamical analogy (RDA) is introduced to express the critical stresses of slabs and box girders in the range of viscoplastic strains and strain hardening. Applying the finite strip method (FSM) as a semi-analytical method, the fundamental equilibrium equations are derived based on the principle of minimum total potential energy. Apart from the quantitative research the qualitative research is presented to demonstrate the capabilities of the present theory.

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An efficient finite strip procedure for initial post-buckling analysis of thin-walled members

Fang

et al. 2019

Arch Appl Mech

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Quasi static and dynamic inelastic buckling and failure of folded-plate structures by a full-energy finite strip method

Cited by 11 publications

References 21 publications

Fatigue damage in bending of reinforced concrete frames using non-destructive tests for dynamic strength of the cylinder

Fatigue damage in bending of reinforced concrete frames using non-destructive tests for dynamic strength of the cylinder

Ultimate Strength of Compressed Slabs and Box Girders

An efficient finite strip procedure for initial post-buckling analysis of thin-walled members

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