Thermo-structural analysis of deployable composite booms with slotted hinges for space applications

Lakshmi, S. Kanaga; Varsha, M.K.N. Sai; Krishnaa, G.M. Sabari; Kuriakose, Vinu M.; Shaik, Mahaboob Subhani; Subramanian, Hariharan Sankara; Sreehari, V.M.

doi:10.1016/j.matpr.2021.11.633

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article2

Other1

Relationship

Self Cite0

Independent3

Authors

Journals

Cited by 3 publications

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Optimizing deployment dynamics of composite tape-spring hinges

Jin,

An,

Jia

et al. 2024

Thin-Walled Structures

View full text Add to dashboard Cite

Optimizing deployment dynamics of composite tape-spring hinges

Jin,

An,

Jia

et al. 2024

Thin-Walled Structures

View full text Add to dashboard Cite

Free Vibration of a Panel Supported by a Shear Compliant Two-Flexure Hinge

Yasara Dharmadasa,

Mejia-Ariza,

Sauder

et al. 2024

AIAA Journal

View full text Add to dashboard Cite

Elastically deformable hinges or deployable booms commonly follow architectures with face-skin layers only, cutting out the core to facilitate folding. This significantly reduces the shear stiffness of the hinge, which might reduce the first resonance frequency of the structure. We rationalize the free vibration of the system and the interplay between shearing and bending deformation by deriving an analytical formulation using Timoshenko’s beam theory. The framework is derived for a general beam and applied to a case of two flexures of arbitrary geometry with no core. Investigating the specific geometry of flat flexures reveals the existence of two nondimensional length ratios that capture the interplay between inertia, bending stiffness, and shear stiffness of the hinge. Our model explains the dependence of the frequency on the parameters of the system, as well as the dimensions that determine the transition between bending- and shear-dominated vibration modes. Comparison with finite element simulations shows that our analytic framework is able to predict the first natural frequency with less than 1% error. Additionally, an experimental validation was carried out using steel flexures and acrylic panels, showing good agreement with the predictions.

show abstract