SSHS LAB

Research

b. Deployable truss structure with flat-form storability

Space Structure

Research

Space Structure

b. Deployable truss structure with flat-form storability

Principal Investigator: Jae-Hung Han
Participating Graduate Research Assistant: Jong-Eun Suh, Tae Hyeun Kim
Related Projects: NLS, LIG Nex1

Summary:

We develop solutions to make the space structures be stored efficiently, analyze the stiffness and load capacity with FEM and analytic method, and manufacture the prototype for proof of concept.

Related Recent Publication:

[1] Kim, T.-H., Suh. J.-E., and Han, J.-H., “Deployable Truss Structure with Flat-form Storability Using Scissor-like Elements,” Mechanism and Machine Theory, Vol. 159, Article No. 104252, May 2021.
[2] 한재흥, 김태현, 서종은, “평면 형태로 수납 가능한 전개형 트러스 붐 구조물,” 대한민국 특허 등록번호 10-2020-0040923 2021.06.08
[3] 김태현, 서종은, 한재흥, “전개형 시저스 구조물의 동역학적 모델링 및 전개 완료 형상에 따른 강성 분석” 한국항공우주학회지 제 47권 제 6호, PP.405-413, 2019

1.Goals

Design a deployable truss structure capable of efficient storage

Establishment of the mathematical model which can describe the deployment behavior
Analysis of kinematic, dynamic, and structural characteristics
Development of a deployable structure with improved packaging efficiency and stiffness

2. Approaches

Analyses with a mathematical model and parametric study

Analycze the geometric and kinematic characteristics of deployable structures.
Establish a mathematical model to describe the deployment behavior.

Dynamic simulation and structural analysis using software

Perform dynamic simulation with ADAMS and Recurdyn software.
Analyze the structural characteristics with ANSYS software.

Prototyping and deployment tests

Manufacture a prototype using 3D printer and laser cutter.
Conduct deployment tests and export the data with Stereo Pattern Recognition camera, sensors, etc.

Fig.1 Folding sequence of the Yoshimura cylinder following the proposed folding methodology

Fig.2 Variation of deployment length with respect to the number of units and θ0

3. Recent Achievements

The minimum driving tension force for deployment was derived with a mathematical model. Modal analysis was performed to check the bending stiffness with respect to the deployment length. A deployable CubeSat is being designed using the proposed deployable structure. Tetrahedral deployable structure with tape spring is being designed to improve the torsional stiffness. Mathematical modeling of flat-foldable deployable truss structure with flat-form foldability using scissor-like elements. Application to deployable optical payload and validation of the concept by deployment test of the prototype.