Simple Technique for Form-Finding and Tension Determining of Cable-Network Antenna Reflectors

Wang, Liu; Li, Dongxu

doi:10.2514/1.a32444

Cited by 31 publications

(5 citation statements)

References 12 publications

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“…From Eqs. (12) and ( 13) it can be seen that ijk s e should be a pluralistic quadratic function of i Z , j Z and k Z . Also, it can be noticed that an accurate integral of Eq.…”

Section: Node Position Optimizationmentioning

confidence: 99%

“…Shi et al [9,10] proposed design methodologies to automatically generate pseudogeodesic mesh geometries of spherical and parabolic reflector surfaces. Additionally, when considering the elastic deformation of rim trusses, several techniques have been introduced to compensate the deformation of the supporting trusses [11,12,13] after form-finding for the cable net configurations.…”

Section: Introductionmentioning

confidence: 99%

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Optimal surface profile design of deployable mesh reflectors via a force density strategy

et al. 2017

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Based on a force density method coupled with optimal design of node positions, a novel approach for optimal surface profile design of mesh reflectors is presented. Uniform tension is achieved by iterations on seeking optimum coefficients of the force density. The positions of net nodes are recalculated in each iteration so that the faceting rms error of the reflector surface is minimized. Applications of both prime focus and offset configurations are demonstrated. The simulation results show the effectiveness of the proposed approach.

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“…From Eqs. (12) and ( 13) it can be seen that ijk s e should be a pluralistic quadratic function of i Z , j Z and k Z . Also, it can be noticed that an accurate integral of Eq.…”

Section: Node Position Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal surface profile design of deployable mesh reflectors via a force density strategy

et al. 2017

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“…The reflectors are often analyzed as membrane due to its low compressive and bending stiffness [4][5]. When working in orbit, the antenna reflector needs to keep an exact paraboloidal shape, which is directly determined by the tension on the metal meshes [6]. Therefore, in order to maintain high surface accuracy, the problem of the large deformation of a circular membrane under a concentrated force is of great significance.…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Study of Circular Orthotropic Membrane Under Concentrated Load: The Relation of Load and Deflection

Huang

Song

et al. 2020

IEEE Access

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In this study, the deformation of circular orthotropic membranes subjected to a central concentrated force is investigated. An orthotropic membrane equation indicating load-deflection behavior based on Föppl-von Kármán membrane theory is obtained and the numerical solutions are gotten by using MATLAB. A variable k, which is the most influential parameter on the load-deflection behavior, is proposed. In isotropic membrane, the change of material parameters mainly influences the deflection of membranes subjected to a concentrated force; however, when studying for orthotropic membrane, the shape of membrane after deformation can be controlled by changing the value of k. Only change in elastic modulus and Poisson's ratio, with k constant, mainly influence the deflection of curves, instead of the shape of curves. Then, four numerical simulations by ABAQUS are conducted and the membrane element M3D4R is used to set up a finite-element model. By comparing these simulation results with the solutions from orthotropic membrane equation, it is shown that the orthotropic membrane equation gives a good estimation of load-deflection behavior. INDEX TERMS load-deflection curve, orthotropic membrane, central concentrated load, membrane element M3D4R.

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“…2 A cable network for an astromesh deployable antenna reflector is considered for investigation which consists of a front net, rear net, reflective mesh, tension ties, and supporting truss. 3 The front and rear nets are attached to the deployable ring truss. The front net plays the role of supporting the metal RF reflective mesh and the rear net is used to balance the tension.…”

Section: Introductionmentioning

confidence: 99%

Investigation on design methods for cable mesh configuration of deployable space antenna reflector

Sheth

Arora

Joshi

et al. 2020

International Journal of Space Structures

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Mesh reflectors are always a preferable option for large size deployable antenna reflector over solid surface reflectors due to their flexibility of adjustment in minimum possible space and ability to get deployed to full configuration in space. Maintaining surface properties and accuracy are two important requirements in the design of the mesh reflector for the performance of cable network antenna reflectors. The present work considers the various design approaches for cable mesh configuration of space deployable antenna reflectors. The equal force density shape forming criteria such is applied for obtaining the desired parabolic curvature of the mesh configuration. The ring structure for the deployable mechanism is considered as rigid linkages for designing mesh configuration. A generalized numbering scheme for nodes and cable mesh link is formulated for carrying forward various shapes forming criteria which help in making an algorithm. The algorithm for a better understanding of these methods is developed using MATLAB with nodal coordinates and its connection. Mesh configuration is developed with a different number of divisions. A study is also carried out for finding the required number of divisions for a highly accurate parabolic profile for a particular band frequency. A demonstration model is developed and a comparison of the coordinates of the prototype is made with those arrived at using the model.

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Simple Technique for Form-Finding and Tension Determining of Cable-Network Antenna Reflectors

Cited by 31 publications

References 12 publications

Optimal surface profile design of deployable mesh reflectors via a force density strategy

Optimal surface profile design of deployable mesh reflectors via a force density strategy

A Theoretical Study of Circular Orthotropic Membrane Under Concentrated Load: The Relation of Load and Deflection

Investigation on design methods for cable mesh configuration of deployable space antenna reflector

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