Identification of walking human model using agent-based modelling

•An agent-based model is presented simulating successfully HSI in the vertical direction.•A normal distribution is proposed to describe damping ratio of the SDOF walking human.•A normal distribution is proposed to describe natural frequency of the SDOF walking human. The interaction of walking peopl...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Mechanical systems and signal processing Ročník 103; s. 352 - 367
Hlavní autoři: Shahabpoor, Erfan, Pavic, Aleksandar, Racic, Vitomir
Médium: Journal Article
Jazyk:angličtina
Vydáno: Berlin Elsevier Ltd 15.03.2018
Elsevier BV
Témata:
Agent-based models
Computer simulation
Discrete traffic model
FRF-based modal testing
Human-structure interaction
Normal distribution
Parameter identification
Pedestrian bridges
Reverse engineering
SDOF moving human model
Standard deviation
Traffic models
Vibration serviceability
Vibration tests
Walking
Vibration serviceability
SDOF moving human model
Human-structure interaction
Discrete traffic model
FRF-based modal testing
ISSN:0888-3270, 1096-1216
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:•An agent-based model is presented simulating successfully HSI in the vertical direction.•A normal distribution is proposed to describe damping ratio of the SDOF walking human.•A normal distribution is proposed to describe natural frequency of the SDOF walking human. The interaction of walking people with large vibrating structures, such as footbridges and floors, in the vertical direction is an important yet challenging phenomenon to describe mathematically. Several different models have been proposed in the literature to simulate interaction of stationary people with vibrating structures. However, the research on moving (walking) human models, explicitly identified for vibration serviceability assessment of civil structures, is still sparse. In this study, the results of a comprehensive set of FRF-based modal tests were used, in which, over a hundred test subjects walked in different group sizes and walking patterns on a test structure. An agent-based model was used to simulate discrete traffic-structure interactions. The occupied structure modal parameters found in tests were used to identify the parameters of the walking individual’s single-degree-of-freedom (SDOF) mass-spring-damper model using ‘reverse engineering’ methodology. The analysis of the results suggested that the normal distribution with the average of μ = 2.85Hz and standard deviation of σ = 0.34Hz can describe human SDOF model natural frequency. Similarly, the normal distribution with μ = 0.295 and σ = 0.047 can describe the human model damping ratio. Compared to the previous studies, the agent-based modelling methodology proposed in this paper offers significant flexibility in simulating multi-pedestrian walking traffics, external forces and simulating different mechanisms of human-structure and human-environment interaction at the same time.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0888-3270
1096-1216
DOI:10.1016/j.ymssp.2017.10.028