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| Azevedo, Nuno Monteiro |
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Schenk, Mark
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Publications (8/8 displayed)
- 2023WrapToR Truss Stiffeners: Lightweight Reinforcement for Composite Skin Panels
- 2022Probing the stability landscape of prestressed stayed columns susceptible to mode interactioncitations
- 2020Newton’s method for experimental path-following of nonlinear structures
- 2019Happy Catastrophe:Recent Progress in Analysis and Exploitation of Elastic Instabilitycitations
- 2019Thermal prestress in composite compliant shell mechanismscitations
- 2019Happy Catastrophecitations
- 2018Thermal Prestress in Composite Compliant Shell Mechanisms
- 2014Novel Stacked Folded Cores for Blast-Resistant Sandwich Panelscitations
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document
Thermal prestress in composite compliant shell mechanisms
Abstract
This paper explores the ability to tailor the mechanical properties of composite compliant shell mechanisms, by exploiting the thermal prestress introduced during the composite laminate cure. An extension of an analytical tape spring model with composite thermal analysis is presented, and the effect of the thermal prestress is studied by means of energy landscapes for the cylindrical composite shells. Tape springs that would otherwise be monostable structures become bistable and exhibit greater ranges of low-energy twisting with thermally-induced prestress. Predicted shell geometries are compared with finite element results and manufactured samples, showing good agreement between all approaches. Wider challenges around the manufacture of prestressed composite compliant mechanisms are discussed.