Thermal Prestress in Composite Compliant Shell Mechanisms

Jonathan Stacey, Matt O'Donnell, Mark Schenk

Research output: Contribution to journalSpecial issue (Academic Journal)peer-review

9 Citations (Scopus)
306 Downloads (Pure)


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.
Original languageEnglish
Article number020908
Number of pages8
JournalJournal of Mechanisms and Robotics
Issue number2
Early online date22 Feb 2019
Publication statusPublished - 1 Apr 2019

Structured keywords

  • Bristol Composites Institute ACCIS


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