Static Behavior of a Retractable Suspen-Dome Structure

Shen, Xiaoyun; Zhang, Qian; Lee, Daniel Sang-Hoon; Cai, Jianguo; Feng, Jian

doi:10.3390/sym13071105

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…In recent years, the form-finding of cable domes was investigated by many authors as well [22][23][24]. Popular areas of research on tensegrity domes include structure optimization [25,26] and the investigation of static and dynamic properties [27][28][29]. Nevertheless, there is a gap in the parametric analysis of tensegrity domes.…”

Section: Introductionmentioning

confidence: 99%

Qualitative and quantitative analysis of tensegrity domes

Obara,

Solovei,

Tomasik

2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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The paper concerns steel domes with regard to the special structures named tensegrity. Tensegrities are characterized by the occurrence of self-stress states. Some of them are also characterized by the presence of infinitesimal mechanisms. The aim of this paper is to prove that only tensegrity domes with mechanisms are sensitive to the change of the level of initial prestress. Two tensegrity domes are considered. In addition, a standard single-layer dome is taken into account for comparison. The analysis is carried out in two stages. Firstly, the presence of the characteristic tensegrity features is examined (qualitative analysis). Next, the behavior under static external loads is studied (quantitative analysis). In particular, the influence of the initial prestress level on displacements, effort, and stiffness of the structure is analyzed. To evaluate this behavior, a geometrically non-linear model is used. The model is implemented in an original program written in the Mathematica environment. The analysis demonstrates that for a dome with mechanisms, the adjustment of pre-stressing forces influences the static properties. It has been found that the stiffness depends not only on the geometry and properties of the material but also on the initial prestress level and external load. In the case of the non-existence of mechanisms, structures are insensitive to the initial prestress level.

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Section: Introductionmentioning

confidence: 99%

Qualitative and quantitative analysis of tensegrity domes

Obara,

Solovei,

Tomasik

2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Most of the research to date focuses on layout design (Rebielak, 2000;Yuan et al, 2007), form-finding methods (Lee et al, 2009), or shape optimization (Kawaguchi et al, 1999;Zhang and Feng, 2017). A smaller number of studies focused on static parameters of tensegrity structures (Shen et al, 2021;Sun et al, 2021;Obara et al, 2023a), and only a few on the dynamic behaviour of dome systems (Obara, 2019; Kim and Sin, 2014;Atig et al, 2017). Due to a non-conventional shape, the complete dynamic analysis of tensegrity domes can be challenging.…”

Section: Introductionmentioning

confidence: 99%

“…Natural f i (0) and free f i (P ) frequency[Hz] for dome G 6A 23. 4.22 4.19 4.20 4.20 4.23 10.19 10.18 10.17 10.22 10.44 10.25 36 4.36 4.35 4.33 4.32 4.32 4.36 4.31 10.48 10.48 10.45 10.52 10.71 10.56 10.47 40 4.59 4.58 4.51 4.58 4.55 4.58 4.54 11.05 11.05 11.04 11.05 11.22 11.04 11.03 50 5.13 5.12 5.06 5.12 5.08 5.12 5.09 12.35 12.35 12.34 12.35 12.45 12.34 12.32…”

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Parametric dynamic analysis of tensegrity cable-strut domes

Obara,

Solovei,

Tomasik

2024

Journal of Theoretical and Applied Mechanics

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The paper contains a parametric dynamic analysis of cable-strut domes. The special structures named tensegrity are considered. Two qualitative different tensegrity domes, i.e., the Geiger dome and the Levy dome are taken into account. The aim of the study is to compare the dynamic behaviour of such structures. The first stage of analysis involves the identification of initial prestress forces (system of internal forces, which holds structural components in stable equilibrium) and infinitesimal mechanisms. The second stage focuses on calculating natural frequencies, while in the last, the impact of time-independent external loads on vibrations is studied. The influence of initial prestress and external load on the dynamic response of the structures is considered. A geometrically non-linear model is used to analysis. Presented considerations are crucial for the next step in the analysis, i.e., dynamic stability analysis of the behaviour of tensegrity structures under periodic loads.

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“…Collapse of buildings during earthquakes causes serious casualties and economic losses. Much research has been carried out on recent years carried out by Chinese and foreign experts on the mechanical properties and stability of the string dome structure, such as seismic response and anti-seismic analysis [5][6][7][8], buckling and dynamic response under friction [9], model optimization design based on artificial neural networks [10], elastoplastic dynamic response [11], structural optimization algorithm and design [12][13][14], long-span discontinuous mechanical properties [15], initial geometric defect analysis [16], cable tension estimation [17], static and the dynamic analysis by finite element method [18,19], and thrust line analysis of masonry domes [20]. Gong, S.Y.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response Analysis of a Multiple Square Loops-String Dome under Seismic Excitation

et al. 2021

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The interaction between multiple loops and string cables complicates the dynamic response of triple square loops-string dome structures under seismic excitation. The internal connection between the multiple square loops-string cables and the grid beams was studies to provide a favorable reference for an anti-seismic structure. With a finite element model of the Fuzhou Strait Olympic Sports Center Gymnasium, established by SAP2000 software, the structural dynamic characteristic parameters were obtained first, and then this study adopted a time-history analysis method to study the internal force response of the cables and the roof grid beams of the multiple square loops-string dome (MSLSD) under three types of seismic array excitation. The influence of two factors, namely the seismic pulse and the near and far seismic fields, on the dynamic response of this structure was analyzed by three groups of different types of seismic excitation (PNF, NNF, PFF). As shown from the results, the first three-order vibration modes were torsional deformations caused by cables, the last five were mainly the overall roof plane vibration and antisymmetric vibration. Under the excitation of the three seismic arrays, the internal force responses of stay cables, square cables in the outer ring and the string cables were largest, while the maximum internal force response of the struts changed with the direction of seismic excitation. The largest internal force response of the roof grid beams occurred in local components such as BX3, BX7 and BY7, and the largest deformation of the beam nodes occurred in JX7, JX12 and JY4. In general, the seismic pulse and the near seismic field weakened the internal force response of the struts and cables but increased the internal force response and deformation of the dome beams, while the near and far seismic fields outweighed the seismic pulse. All the above provides an important reference for structural monitoring and seismic resistance.

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Static Behavior of a Retractable Suspen-Dome Structure

Cited by 9 publications

References 25 publications

Qualitative and quantitative analysis of tensegrity domes

Qualitative and quantitative analysis of tensegrity domes

Parametric dynamic analysis of tensegrity cable-strut domes

Dynamic Response Analysis of a Multiple Square Loops-String Dome under Seismic Excitation

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