Proposed Mathematical Model for Semi-Rigid Joint Behaviour (<i>M-θ</i>) in Space Structures

Chenaghlou, Mohammad Reza; Nooshin, Hoshyar; Harding, J.E.

doi:10.1260/0266-3511.29.2.71

Cited by 11 publications

(7 citation statements)

References 8 publications

(13 reference statements)

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“…The connection parameter c is calculated as mentioned in ref. [12]. The figures indicate that the proposed mathematical model can predict the connection behaviour, including the axial force effect with good accuracy.…”

Section: Moment-rotation Surfacementioning

confidence: 77%

Axial force–bending moment interaction in a jointing system

Chenaghlou

Nooshin

2015

Journal of Constructional Steel Research

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Section: Moment-rotation Surfacementioning

confidence: 77%

Axial force–bending moment interaction in a jointing system

Chenaghlou

Nooshin

2015

Journal of Constructional Steel Research

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“…In this equation, which has been explained in [6], c is the connection parameter which is considered to be between 0.0 and 2.4. MU is the ultimate moment capacity of the connection and is considered to be equal to the plastic moment capacity of the tubular cross-section, that is, MP=2538.54 kN.mm.…”

Section: Compression Member Behaviour: a Parametric Studymentioning

confidence: 99%

“…This connection is a ball jointing system used extensively in double-layer grids. Study of a number of experimental results [6] on the moment-rotation behaviour of ball joints shows that the connection parameter c for this kind of joint is in the range of 1.5 to 1.9. The connection parameter c for the joint in Figure 3 is 1.6.…”

Section: Classification Of Connections According To Eurocode and Bjormentioning

confidence: 99%

“…VR=[1.0 1.0 1.0] T for a rigid joint Now by using the Euclidean distance of the vector VC from vector Vp, it is possible to map vector VC to a scalar. This scalar is referred to as the connection coefficient, JC, and is defined by JC=(VC-Vp) T (VC-VP)/ 3 (6) Knowing the coefficient of connection JC, a connection can be classified as follows:  if JC=0.0 then the joint is pinned.  if JC=1.0 then the joint is rigid.…”

Section: Proposed Classification Systemmentioning

confidence: 99%

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03.30: Connection classification for a space structure jointing system

Chenaghlou

Hamed

2017

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A crucial consideration in the analysis of space structures is the decision of how the connections are to be modelled. This depends on the configuration and dimensions of the structure to be analysed as well as the material and the type of connections employed. A number of attempts for connection classification have been reported and among these two classification systems i.e. classification system in Eurocode 3 and classification system by Bjorhovde et al. have received more attention. These two classification systems have been developed for beam-to-column connections. In order to appraise the two classification systems for a space structure jointing system, a parametric study has been carried out on the effects of connections on compression member behaviour. Based on the obtained results, a methodology for the classification of connections in space structures has been proposed. The proposed classification method uses floating boundaries that give more flexibility to the classification.

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“…However, as for spatial grid structures, only a few prediction methods for the jointing systems have been proposed. Chenaghlou et al [6,24] proposed an exponential mathematical model for ball joints utilized in spatial grid structures. However, the parameters of this model (i.e.…”

Section: Introductionmentioning

confidence: 99%

Behaviour and Mathematical Model for Semi- Rigid Threaded- Sleeve Connection

2019

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Threaded-sleeve connection (TSC) is a new type of semi-rigid connection for spatial grid structures. In this paper, bending behaviour of the TSC was analyzed and a mathematical model for prediction of moment-rotation behaviour was proposed. Firstly, experiments were conducted to investigate the bending performance and damage form of the TSC. The moment-rotation curves of the specimens were obtained as well. Then, solid finite element model was established through ANSYS. Comparing the theoretical analysis and experiments, it was observed that the numerical results agreed well with the experimental data, which indicates the feasibility of the finite element analysis method. Finally, the calculation formul as of the initial moment and the initial rotation of the TSC were obtained through MATLAB curve fitting. The shape parameter n was determined. Based on the Kishi-Chen power model, the moment-rotation model of the TSC was developed. Therefore, it will be possible to take into account semi-rigid analysis for a spatial grid structure with TSC easily and find the more actual behaviour of the structure.

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Proposed Mathematical Model for Semi-Rigid Joint Behaviour (M-θ) in Space Structures

Cited by 11 publications

References 8 publications

Axial force–bending moment interaction in a jointing system

Axial force–bending moment interaction in a jointing system

03.30: Connection classification for a space structure jointing system

Behaviour and Mathematical Model for Semi- Rigid Threaded- Sleeve Connection

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