Pretension design of cable-network antennas considering the deformation of the supporting truss: A double-loop iterative approach

Yuan, Pengfei; He, Baiyan; Zhang, Lianhong; Yuan, Zhe; Ma, Xiaofei

doi:10.1016/j.engstruct.2019.02.007

Cited by 26 publications

(3 citation statements)

References 27 publications

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“…Yang X. et al (2023) analyzed the stress field in the mining area and proposed a combined support method that includes increasing the density of anchor rod support, grouting transformation, and stress reduction, providing a new idea for stabilization control of roadway at different depths. Yuan et al (2019) investigated the reasonable support density for deep thick coal seam mining roadways, focusing on the geological conditions of the 630 mining area in Tangkou coal mine with significant burial depth and thick top coal. The study confirmed a reasonable spacing between anchor bolts of 1000 mm × 1000 mm.…”

Section: Introductionmentioning

confidence: 99%

Analysis of stability in pedestrian downhill roadway at Yindonggou 11th coal mine area: the impact of anchor cable support density

Jinbao

2024

Front. Energy Res.

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The study of cable support density’s impact on the stability of rock in mine roadways is vital for personnel safety, equipment protection, and mining operations continuity. This research examines a typical engineering scenario within the 11th mining area pedestrian downhill roadway of Yindonggou Mine. A numerical model is devised, accounting for post-peak evolution of mechanical parameters in the surrounding rockmass, represented by a plastic shear strain-dependent multi-segment linear function. Factors such as vertical displacement of the roof and floor, cable axial force, and changes in the plastic zone were scrutinized to decipher the influence of anchor cable support density on roadway stability. The study revealed the following results: 1) The displacement pattern of the roadway roof initially decreases at a decreasing rate before stabilizing with an increase in calculation time step. However, the floor displacement increases first at a diminishing rate before achieving stability with increased calculation time. 2) As a result of the pulling effect caused by deformation and movement of roof’s surrounding rock, the axial force of the anchor cable initially rises with a declining rate before reaching a virtually constant value with increased computation time. 3) Analysis of the vertical displacement field of the model illustrates that with the rise in support density, the maximum displacement of the model’s top plate sinking and bottom plate elevation gradually reduces. 4) With the increment in support density, the number of units showing a plastic shear strain greater than 0.2, 0.1, and 0.05 tends to decrease, indicating increased stability of the roadway. Furthermore, it was observed that the probability of plastic shear yielding at the junction of the roadway floor and side is high while the shoulder of the roadway reflects a lower probability.

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Section: Introductionmentioning

confidence: 99%

Analysis of stability in pedestrian downhill roadway at Yindonggou 11th coal mine area: the impact of anchor cable support density

Jinbao

2024

Front. Energy Res.

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“…Among them, some examples applied for large deployable antennas have been synthesized. A cable network structure is developed by Yuan et al. (2019).…”

Section: Introductionmentioning

confidence: 99%

“…Among them, some examples applied for large deployable antennas have been synthesized. A cable network structure is developed by Yuan et al (2019). The nonlinear properties of the antenna structure are studied based on the finite element method (FEM).…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics and structural stability analysis of a large annular tensegrity structure with radial ribs

Shi

Guo

Liu

2023

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PurposeIn order to make the aperture of spatial deployable antenna larger, this paper proposed the study on a spatial annular tensegrity structure with 100 m large scale, which could be one of the ideal solutions to improve the dimension of the antenna. This study is aiming to figure out the dynamic characteristic of ultra-large annular tensegrity and address the problem of insufficient rigidity with local modes that many ring truss-type deployable antenna structures have faced.Design/methodology/approachThis work is carried out based on the nonlinear dynamic modelling when fully considering the effect of bending and torsion deformation of beams, as well as the pretension of cables. Additionally, the structural stability analysis based on the proposed stability criterion is also presented to evaluate the tensegrity configuration with different distribution of cable groups.FindingsThis research results verify that the modified structure with radial ribs could eliminate the effect of the local vibration mode on stiffness and is suitable to meet the requirements of the annular tensegrity structure. Additionally, the calculation results demonstrate that the structural configuration of annular tensegrity with 36 groups of cables which share the nodes with radial ribs is more appropriate to enhance the stiffness and structural stability.Originality/valueA new large annular tensegrity structure with radial ribs and tensioned cables is proposed. Based on the proposed structural configuration, the positive definiteness of the tangent stiffness matrix is carried out as the criterion of stability and the composition of the analytical expression of the tangent stiffness matrix is analyzed. Four levels of tensegrity structure stability have been carried out and the influence of the structural parameters on the stability and the rigidity has been analyzed. A scaled-down prototype is developed to verify the feasibility of the design of the hoop-column-rib configuration by the deployment and dynamic experiment.

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Thermal design optimization method of mesh reflector antennas considering the interaction between cable net and flexible truss

Zhang

et al. 2023

Struct Multidisc Optim

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Pretension design of cable-network antennas considering the deformation of the supporting truss: A double-loop iterative approach

Cited by 26 publications

References 27 publications

Analysis of stability in pedestrian downhill roadway at Yindonggou 11th coal mine area: the impact of anchor cable support density

Analysis of stability in pedestrian downhill roadway at Yindonggou 11th coal mine area: the impact of anchor cable support density

Dynamic characteristics and structural stability analysis of a large annular tensegrity structure with radial ribs

Thermal design optimization method of mesh reflector antennas considering the interaction between cable net and flexible truss

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