| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
Analysis of Triangular Rollable and Collapsible Composite Booms Under the Effects of Gravity and Twist |
| Author(s) |
Richard A. Larson, Cyrus J. R. Kosztowny, William Allen Waters, David Long |
| On-Site Speaker (Planned) |
Richard A. Larson |
| Abstract Scope |
Finite element analysis (FEA) is used to investigate Triangular Rollable and Collapsible (TRAC) composite booms. The TRAC booms are subjected to a suite of loading conditions, including in-plane bending, out-of-plane bending, and axial compression. The TRAC booms are also subject to loading conditions representative of anticipated flight loads for a solar sail. Simulations contained as-designed boom geometry and simulations were also performed with geometric deviations associated with the as-built conditions of a sample TRAC boom. Twisting in the sample boom was observed after short-term storage in a rolled configuration and is attributed to differential creep deformation between the inner and outer flanges of the TRAC boom. Namely, cross sectional twisting along the length of the boom was incorporated into the analysis to study the effect of the as-tested condition. Simulations were conducted with and without the effects of gravity to understand the significance of gravity on testing conditions. Booms of three lengths were evaluated: 3 meters, 7.5 meters and 30 meters. The results of the FEA models were used to inform experimental test setup for analysis validation procedures. The mechanical responses of the TRAC booms are discussed with reference to the effects of gravity, boom length and cross-sectional twisting. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |