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.
|Number of pages||8|
|Journal||Journal of Mechanisms and Robotics|
|Early online date||22 Feb 2019|
|Publication status||Published - 1 Apr 2019|
- Bristol Composites Institute ACCIS
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Composite compliant shell mechanisms: tailoring and characterisationAuthor: Stacey, J., 28 Sep 2021
Supervisor: Ward, C. (Supervisor), O'Donnell, M. (Supervisor) & Schenk, M. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy (PhD)File