Numerical and Theoretical Study on Mechanical Behaviors of New Dovetail Joint System (NDJs) Subjected to Tensile, Compressive, and Out-of-plane Bending Moment Forces

Mashrah, W.A.H.; Chen, Zhihua; Liu, Hongbo

doi:10.1007/s13296-021-00492-z

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…Lin et al conducted axial compression tests on H-shaped aluminum alloy members made of 7075-T6 and proposed a new extramural buckling curve to estimate the flexural buckling-bearing capacity of high-strength extruded members [26]. Mashrah et al introduced a novel dovetail joint for a single-layer reticulated shell structure, demonstrating outstanding performance under various axial loads and bending moments [27]. Wang et al investigated the bending performance test of aluminum alloy composite plate joints.…”

Section: Introductionmentioning

confidence: 99%

Shaking Table Tests and Numerical Analysis Conducted on an Aluminum Alloy Single-Layer Spherical Reticulated Shell with Fully Welded Connections

Lu,

Ning,

et al. 2024

Buildings

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Aluminum alloy offers the advantages of being lightweight, high in strength, corrosion-resistant, and easy to process. It has a promising application prospect in large-span space structures, with its primary application form being single-layer reticulated shells. In this study, shaking table tests were conducted on a 1/25 scale aluminum alloy single-layer spherical reticulated shell structure. A finite element (FE) model of the reticulated shell structure was established in Ansys. Compared with the experimental results, the deviation in natural frequency, acceleration amplitude, and displacement amplitude was less than 20%, confirming the validity of the model. An extensive analysis of the various rise–span ratios and connection constraints of a single-layer spherical reticulated shell structure was carried out using the proposed FE model. The experimental and simulation results showed that as the rise–span ratio of the aluminum alloy reticulated shell increases, the natural frequency of the reticulated shell structure also increases while the dynamic performance decreases. The connection of the circumferential members changes from a rigid connection to a hinged connection. The natural frequency of the reticulated shell structure is reduced by about 40% while the acceleration and displacement response values are decreased by approximately 15%.

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Section: Introductionmentioning

confidence: 99%

Shaking Table Tests and Numerical Analysis Conducted on an Aluminum Alloy Single-Layer Spherical Reticulated Shell with Fully Welded Connections

Lu,

Ning,

et al. 2024

Buildings

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“…A bolt-column-plate joint [13] has enough out-of-plane rotational stiffness, but is weak under in-plane bending. Ball-cylinder joints [14], pre-embedded bolt joints [15,16], semi-rigid pin joints [17,18], dovetail joints [19][20][21][22], assembled hub joints [23][24][25], and SLO joints [26] require high installation accuracy since they connect shell members by threading the bolts into holes with internal threads instead of conventional bolt holes with installation clearance. Prestressed high-strength bolt joints [27] and semi-rigid pin joints [17,18] have complex joint details, similar to precision mechanical parts.…”

Section: Introductionmentioning

confidence: 99%

Rotational Stiffness Investigation and Parametric Analysis of a Novel Assembled Joint in Lattice Shells

Xu,

Zhu,

et al. 2024

Buildings

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Although there are currently many types of lattice shell joints with different characteristics, assessing the flexural capacity of lattice shell joints is always a great challenge. In this paper, a fan-shaped assembled joint and a welded joint for comparison were subjected to bending tests to investigate the flexural behavior and rotational stiffness of the assembled joint. The strain distribution, load–displacement curve, moment–rotation curve, and damage modes of key parts were analyzed to determine the vulnerable parts of the joints. Our test results show that, with an initial rotational stiffness of about one third of that of the welded joint, the assembled joint specimen exhibits the obvious characteristics of a semi-rigid joint. The finite element analysis results were in good agreement with the experimental results. The results of our parametric analysis show that the rotational stiffness and ultimate moment of the assembled joint increase with increases in the spacing of the bolts and the number of bolts. The performance of the high-strength bolts had a significant influence on the flexural stiffness of the assembled joints. The spacing of the bolts and the number of bolts for the assembled joint are suggested to be greater than the height of the member section and more than three, respectively. The proposed theoretical formula can approximately simulate the initial rotational stiffness of the joint. More in-depth investigations are required in the future for assessing the mechanical behavior of FSA joints subjected to combined bending–compression loads.

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Numerical Parametric Study on Hysteresis Performance of the Novel Dovetail Joint for Single-layer Grid Shells Subjected to Out-of-Plane Bending Moment

et al. 2023

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Numerical and Theoretical Study on Mechanical Behaviors of New Dovetail Joint System (NDJs) Subjected to Tensile, Compressive, and Out-of-plane Bending Moment Forces

Cited by 6 publications

References 29 publications

Shaking Table Tests and Numerical Analysis Conducted on an Aluminum Alloy Single-Layer Spherical Reticulated Shell with Fully Welded Connections

Shaking Table Tests and Numerical Analysis Conducted on an Aluminum Alloy Single-Layer Spherical Reticulated Shell with Fully Welded Connections

Rotational Stiffness Investigation and Parametric Analysis of a Novel Assembled Joint in Lattice Shells

Numerical Parametric Study on Hysteresis Performance of the Novel Dovetail Joint for Single-layer Grid Shells Subjected to Out-of-Plane Bending Moment

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