Analysis and optimisation of multistable composites under residual stresses
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
During the manufacturing process of multilayered fibre-reinforced composites with variable fibre orientations, residual stresses build up due to the directional expansion of the unidirectionally reinforced single layers. Dependent on the laminate lay-up, these inhomogeneous residual stresses, which are caused by thermal effects, moisture absorption and chemical shrinkage, can lead to large multistable out-of-plane deformations in case of unsymmetric laminates. Instead of avoiding these laminate's curvatures, they can be advantageously used for technical applications such as near-net-shape technologies or adaptive structures. In order to adjust the deformations to technical requirements, a dimensioning tool consisting of an advanced stability and failure analysis in combination with a novel optimisation procedure has been developed. This tool, based on a non-linear calculation method, enables the purposeful adaption of the laminate lay-up dependent on the loading and process parameters and is furthermore the basis for the design of novel adaptive structures.
Details
Original language | English |
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Pages (from-to) | 319-327 |
Number of pages | 9 |
Journal | Composite structures |
Volume | 55 |
Issue number | 3 |
Early online date | 19 Dec 2001 |
Publication status | Published - Feb 2002 |
Peer-reviewed | Yes |
External IDs
ORCID | /0000-0003-1370-064X/work/142243680 |
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Keywords
ASJC Scopus subject areas
Keywords
- Adaptive structures, Failure analysis, Multistable composites, Optimisation, Residual stresses