Design and multi-objective comprehensive optimization of cable-strut tensioned antenna mechanism

Shi, Chuang; Guo, Hongwei; Cheng, Yadi; Liu, Rongqiang; Deng, Zongquan

doi:10.1016/j.actaastro.2020.09.031

Cited by 12 publications

(3 citation statements)

References 17 publications

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“…Gao et al 7 used the response surface method to establish the response surface of the hysteresis loss factor of the general rotary hinge. Shi et al 8 established mathematical surrogate models amongst the configuration parameters, structural parameters and fundamental frequencies of cable-strut tensioned antenna mechanisms with the response surface method. Ye et al 9 defined an optimal surrogate model with response surface methodology to solve the optimal design problem.…”

Section: Introductionmentioning

confidence: 99%

Optimisation design of a large space cable-pole tensioned parabolic cylindrical antenna mechanism

Zhu,

Shi,

Fan

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The cable-strut structure optimisation of a large space cable-strut tensioned parabolic cylindrical antenna is studied. Firstly, the deployment mechanism is designed, and the degree of freedom and kinematics analysis of the mechanism are conducted. Secondly, a complete tension cable configuration with 58 tension cables in 24 categories is established on the basis of the structural characteristics and constraints. A configuration optimisation design method based on the influence coefficient of comprehensive stiffness is proposed. A less tensioned cable optimisation configuration with better static and dynamic stiffness performance is established on the basis of the fully tensioned cable configuration and using the proposed method, and the stiffness characteristics of the configuration are verified through the analysis of an example. Lastly, a mathematical surrogate model between the designed angle and length parameters of the reflector rod system and the fundamental frequency of the antenna is established using the response surface method, and the optimal solution of the reflector rod system is obtained by a genetic algorithm. The effectiveness of the optimisation is verified by finite element modelling and simulation analysis. This study provides a basis and reference for the structural dynamic modelling, characteristic analysis and optimal design of a large space cable-strut tensioned parabolic cylindrical antenna.

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Section: Introductionmentioning

confidence: 99%

Optimisation design of a large space cable-pole tensioned parabolic cylindrical antenna mechanism

Zhu,

Shi,

Fan

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

Self Cite

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“…Currently, multi-objective optimization algorithms are the most commonly used approach for optimizing structures with multiple parameters [21,22]. Scholars have employed this method to optimize the structural parameters of various systems, such as torsional flow heat exchangers [23][24][25], vacuum vessel sector multiple bottom support [26], antenna structure [27][28][29], wind turbine [30][31][32][33][34], and satellite [35], to achieve optimal performance. However, there is limited literature exploring the use of multi-objective optimization algorithms for optimally designing the structural dimensions of different parts of radio telescopes under wind load excitation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response and Optimal Design of Radio Telescope Structure under Wind Load Excitation

Wang,

Zhang,

Yang

et al. 2023

Buildings

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The dynamic response of a radio telescope structure under wind load excitation significantly impacts the accuracy of signal reception. To address this issue, this study established a parametric finite element model of a radio telescope to simulate its dynamic response under wind load excitation. An improved Latin hypercube sampling method was applied in the design of experiments (DOEs) to optimize the structural dimensional parameters of various components of the radio telescope with the aim of reducing the dynamic response to wind load. A response surface model and multi-objective genetic algorithm (MOGA) were employed for multi-objective structural optimization of the radio telescope structure. The findings reveal that the thickness of the stiffening ribs, the length of the side of the square hollow pole, the thickness of the middle pole, and the inner diameter of the thin pole are the most influential structural parameters affecting the first-order frequency (F1), second-order frequency (F2), maximum deformation in the x-direction (DX), and maximum deformation in the z-direction (DZ) of the radio telescope, respectively. Optimizing the radio telescope results in a 40.00% improvement in F1 and a 24.16% enhancement in F2, while reducing DX by 43.94% and DZ by 64.25%. The study outcomes offer a comprehensive scheme for optimizing the structural dimensional parameters of various radio telescope components in regions characterized by multiple wind fields.

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“…To demonstrate the effectiveness and adaptability of the proposed approach, the Five-hundred-meter Aperture Spherical Telescope (FAST) active reflector, which is an extremely complex cable-net structure (Nan & Peng, 2000), is selected as the simulation example. Such complex prestressed cable-net structures are mostly adopted for flexible reflectors and deployable antennas (Shi et al, 2021;Liu et al, 2019;Maddio et al, 2019;Yuan & Yang, 2019;Li et al, 2016), where the construction accuracy has a direct impact on astronomical observation accuracy. The most critical tensioning process during the construction of such complex cable-net structures is simulated and the changes in the internal force are determined as well.…”

Section: Introductionmentioning

confidence: 99%

Numerical Approach for Simulating the Tensioning Process of Complex Prestressed Cable-Net Structures

Chen

Zhang

Qian

et al. 2021

Journal of Civil Engineering and Management

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The stability of cable-net structures depends on the prestress of the system. Due to the large displacement and mutual effect of the cables, it is difficult to simulate the tensioning process and control the forming accuracy. The Backward Algorithm (BA) has been used to simulate the tensioning process. The traditional BA involves complicated and tedious matrix operations. In this paper, a new numerical method based on the Vector Form Intrinsic Finite Element (VFIFE) method is proposed for BA application. Moreover, the tensioning sequence of a complex cable-net structure is introduced. Subsequently, a new approach for BA application in the simulation of the tensioning process is presented, which combines the VFIFE approach and the notion of form-finding. Finally, a numerical example is simulated in detail and the results of different tensioning stages are analyzed to verify the feasibility of the proposed approach. This study provides a significant reference for improving the construction control and forming accuracy of complex prestressed cable-net structures.

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Design and multi-objective comprehensive optimization of cable-strut tensioned antenna mechanism

Cited by 12 publications

References 17 publications

Optimisation design of a large space cable-pole tensioned parabolic cylindrical antenna mechanism

Optimisation design of a large space cable-pole tensioned parabolic cylindrical antenna mechanism

Dynamic Response and Optimal Design of Radio Telescope Structure under Wind Load Excitation

Numerical Approach for Simulating the Tensioning Process of Complex Prestressed Cable-Net Structures

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