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<p>Composite thin-walled lenticular booms are lightweight, foldable structures and are highly useful in satellite missions. The deployable lenticular booms, characterized by their high strain capacity, have gained significant interest and are increasingly utilized in the spacecraft sector due to their exceptional mechanical properties and folding capabilities. The present study focuses on the effect of geometric parameters for the parabolic deployable composite boom (DCB) featuring a lenticular cross section. A dynamic, nonlinear finite element model was developed using ABAQUS software to analyze strain energy accumulation during coiling and deployment and to perform modal analysis. The different combinations of cross-sectional characteristics, including variation of the height of the parabolic DCB (300–400&#xa0;mm) and the radii of curvature of lenticular cross section (7–34&#xa0;mm) were taken for analysis. The natural frequency drops when the height increases with larger radius of curvature for the parabolic DCB. The strain energy reached its maximum value at a radius of curvature of 11&#xa0;mm, which attained 0.2&#xa0;kJ at 400&#xa0;mm height. Consequently, this analysis aids in the selection of the geometric characteristics of the parabolic DCB’s that are suitable for the application.</p>

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Computational Studies on the Strain Energy and Natural Frequency of a Parabolic Deployable Composite Boom for Space Antenna Structures

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • S. Balamurali,
  • Siva Aswika,
  • T. Aharthi,
  • N. Naga Thanmai,
  • V. M. Sreehari,
  • Hariharan Sankara Subramanian,
  • Sidharth Tiwary,
  • Milind Undale,
  • Mariya Ratlami

摘要

Composite thin-walled lenticular booms are lightweight, foldable structures and are highly useful in satellite missions. The deployable lenticular booms, characterized by their high strain capacity, have gained significant interest and are increasingly utilized in the spacecraft sector due to their exceptional mechanical properties and folding capabilities. The present study focuses on the effect of geometric parameters for the parabolic deployable composite boom (DCB) featuring a lenticular cross section. A dynamic, nonlinear finite element model was developed using ABAQUS software to analyze strain energy accumulation during coiling and deployment and to perform modal analysis. The different combinations of cross-sectional characteristics, including variation of the height of the parabolic DCB (300–400 mm) and the radii of curvature of lenticular cross section (7–34 mm) were taken for analysis. The natural frequency drops when the height increases with larger radius of curvature for the parabolic DCB. The strain energy reached its maximum value at a radius of curvature of 11 mm, which attained 0.2 kJ at 400 mm height. Consequently, this analysis aids in the selection of the geometric characteristics of the parabolic DCB’s that are suitable for the application.