Journal of Applied Engineering Science
how to cite this article
share this article


  • citations in SCIndeks: 0
  • citations in CrossRef:0
  • citations in Google Scholar:[]
  • visits in previous 30 days:4
  • full-text downloads in 30 days:4


article: 6 from 51  
Back back to result list
2021, vol. 19, iss. 1, pp. 237-245
Influence of a synchronized human dynamic load on vibrations of machine structures
aUniversity 'Union - Nikola Tesla', Faculty of Applied Sciences, Niš, Serbia
bUniveristy of Niš, Faculty of Mechanical Engineering, Serbia
Keywords: crowd load; dynamics; Fourier series; measurement; rhythmic load; vibration
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 test 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.
BRE (1997) The response of structures to dynamic crowd loads. London, Digest 426
Ellis, B.R., Ji, T., Littler, J.D. (2000) The response of grandstands to dynamic crowd loads. Proceedings of the Institution of Civil Engineers - Structures and Buildings, 140(4): 355-365
Ellis, B.R., Littler, J.D. (2004) Response of cantilever grandstands to crowd loads: Part 2: Load estimation. Proceedings of the Institution of Civil Engineers - Structures and Buildings, 157(5): 297-307
Isherwood Tower crane incidents worldwide. HSE Laboratory, RR820, from, accessed in 2010
Jovanovic, M., Radoicic, G., Jovanovic, D. (2016) Discrete Fourier transformation model for determination of live human force based on experiment. in: XIII International SAUM Conference on Systems, Automatic Control and Measurements, article B5
Jovanovic, M., Radoicic, G., Stojanovic, V. (2019) Accuracy of incidental dynamic analysis of mobile elevating work platforms. Structural Eng. Mech, 71(5): 553-562
Jovanović, M., Radoičić, G., Jovanović, V., Tomić, V. (2015) Synchronic excitation: A type of malicious dynamic action. in: 21th International Conference on Material Handling, Constructions and Logistics: MHCL 2015, Vienna, Austria, September, p. 207-210
Jovanović, M., Radoičić, G. (2017) A human crowd effect modelled by the discrete-time Fourier series. Facta universitatis - series: Working and Living Enviromental Protection, vol. 14, br. 2, str. 139-148
Littler, J.D. (2003) Frequencies of synchronized human loading from jumping and stamping. Structural Engineer, 22: 27-35
Maraveas, C., Fasoulakis, Z.C., Tsavdaridis, K.D. (2015) A review of human induced vibrations on footbridges. American Journal of Engineering and Applied Sciences, 8(4): 422-433
Sahnaci, C., Kasperski, M. (2005) Random loads induced by walking. in: Structural Dynamics: EURODYN 2005, p. 441-446


article language: English
document type: Original Scientific Paper
DOI: 10.5937/jaes0-28214
received: 31/08/2020
accepted: 03/11/2020
published in SCIndeks: 26/03/2021
peer review method: double-blind
Creative Commons License 4.0

Related records

No related records