Design and Analysis of Multi-Patch Composite Plates for a High Multi-Stability of a Morphing Skin
Why this work is in the frame
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Bibliographic record
Abstract
<p> </p> <p>The morphing structures are a significant research area in engineering industry, especially, the fields of aerospace and aircraft which aim at improving performance over a wider range of normal operating conditions. The most challenging design requirement of a morphing structure is a skin, which exhibits both in-plane compliance and out-of-plane stiffness. An asymmetric composite laminate is as good candidate for achieving a morphing skin. By curing the unidirectional composite laminate at elevated temperature and cooling at room temperature, a phenomenon of bi-stability is mainly caused by the mismatch in the thermal expansion coefficients of lamina within the laminate. In practical applications, a single bi- stable composite cannot fulfil multi-stable configurations required for a multifunctional surface. For this reason, a number of bi-stable composite laminates is connected together as continuous surface for showing a higher degree of multi-stability.</p> <p>In this dissertation, the model of Multi-Stable Composite Surface (MCS) is presented by tailoring bi-stable composite patches together in a (m×n) grid form, and then the model is extended to connect a mix of bi-stable and mono-stable composite patches. This new modification on the model reduced the interactions between adjacent bi-stable composite patches in order to show more distinct stable shapes. Based on these results, a novel connection approach is presented by introducing a flexible aluminum strip between connected bi-stable composite patches. This Multi-Stable Hybrid Surface (MHS) shows a theoretical maximum 2𝑛 stable configuration for 𝑛 number of bi-stable composite patches. These stable configurations are interesting shapes that may be used to create a large multi- stable surface as a useful device in a morphing skin application. Finally, potential applications of multi-stable hybrid surfaces are introduced. This work could be used as a guideline for design of a large multi-patch morphing skin in order to improve the multi- functional structures.</p>
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it