A Human Crowd Effect Modelled  by the Discrete-Time Fourier Series

Jovanović, Miljana; Radoičić, Goran

doi:10.22190/fuwlep1702139j

Cited by 3 publications

(2 citation statements)

References 2 publications

(3 reference statements)

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“…experimental regimes. The results experimentally obtained were analysed together with the results from the research conducted on the support structures of machines in real working conditions, [8].…”

Section: Experimental Analysis Of a Human Rhythmic Force Using The Test Platformmentioning

confidence: 99%

“…The model of dynamic excitation by human force formulated in this way was applied in simulations with the FEM models, which were previously developed in [8] to [10]. The purpose of these FEM models has been to determine the dynamic behaviour of a seventeen-ton bridge crane structure of the MIN-D800 type which had the load capacity of 5 t and span of 30 m. One modal vibration shape of the mention crane (mode 29, eigenfrequency 2.34 Hz) loaded with the force model from Eq.…”

Section: Dynamic Excitation Model For Application In Simulation Analyzesmentioning

confidence: 99%

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Influence of a synchronized human dynamic load on vibrations of machine structures

Radoičić¹,

Jovanović²

2021

J Appl Eng Science

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This paper contributes to the research of rhythmic behavior of a group of people, which, more or less synchronized, moves or jumps on a thin and elastic plate, thus performing a dynamically variable load. The analysis of the rhythmic behaviour of the crowd carried out on the basis of the experimental testing on the special steel test platform. The experiment consisted of sixteen measurements of live force and acceleration of the test platform. The dynamic loads caused by the mass of the human crowd and individuals had different intensities. The measurements of acceleration of the carrying platform were performed in order to estimate how the live human force influences on vibrations of machine structures. This research allows us to gain a picture of how serious the threats are from some human actions on the support structure of machines that are handled when performing works in industry, construction or mining. On the basis of these experiments, the mathematical models of the equivalent excitation forces were developed. The measured accelerations of the test platform tread surface and calculated dynamic coefficients of human force indicate that similar actions can seriously endanger balance of the support structure of some machine, and even, for example, can cause the main girder of the bridge crane to fall out. This and similar experiments allow us to formulate appropriate models of excitation loads by human force, which can then be used in simulation analyses in order to develop future systems of electronic protection of machines structures from adverse events.

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Section: Experimental Analysis Of a Human Rhythmic Force Using The Test Platformmentioning

confidence: 99%

Section: Dynamic Excitation Model For Application In Simulation Analyzesmentioning

confidence: 99%

Influence of a synchronized human dynamic load on vibrations of machine structures

Radoičić¹,

Jovanović²

2021

J Appl Eng Science

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Wind-Induced Structural Response of Skylights: A Eurocode-Based Assessment

Naqash,

Khoso,

Noroozinejad Farsangi

2024

Pract. Period. Struct. Des. Constr.

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Realistic Determination of Live Loads on Various Reinforced Concrete Structures

Soomro

Khoso

Ali

et al. 2022

Eng. Technol. Appl. Sci. Res.

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This paper presents various case studies of examined and calculated live loads on reinforced concrete structures. These case studies accumulated information and data of existing structures about their design live loads and acquired detailed drawings showing the reinforcement in their floor slab sections. The actual occupancy loads that act on the floor slabs were assessed, and the ultimate loads that an individual slab section should be able to support were calculated using the methods recommended by ACI, CP-114, CP-110, and the yield line theory. A reinforced concrete slab panel was also tested to check the validity of the theoretically predicted ultimate loads. The results were compared to find a safety margin and, if necessary, recommend lower live load outlines for cost reduction. The case studies showed that there is sufficient margin to reduce design live loads on the floor slabs of residential buildings, especially in multistory apartment blocks. Moreover, it was found that the live loads, especially on residential buildings, could be decreased to two-thirds of the code values without risking floor overloading.

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A Human Crowd Effect Modelled by the Discrete-Time Fourier Series

Cited by 3 publications

References 2 publications

Influence of a synchronized human dynamic load on vibrations of machine structures

Influence of a synchronized human dynamic load on vibrations of machine structures

Wind-Induced Structural Response of Skylights: A Eurocode-Based Assessment

Realistic Determination of Live Loads on Various Reinforced Concrete Structures

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