The influence of functionally graded graphene reinforcements on thenonlinear vibration of postbuckled multiple through-the-width delaminationsof layered composite plates
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Bibliographic record
Abstract
Abstract: The nonlinear thermal stability behavior and large amplitude vibration of functionally graded graphene-reinforced composite (FG-GRC) laminated plates with single and multiple through-the-width delaminations subjected to a uniform temperature rise are discussed in this article. The thermo-mechanical properties of the GRCs are estimated using the extended Halpin-Tsai micromechanical model that incorporates efficiency parameters to take into account the nanoscale size and surface effects of the graphene. The von Karman geometrical nonlinearity is adopted in a solution based on the layerwise third-order shear deformation theory (TSDT). The nonlinear equilibrium equations derived by the minimum total potential energy principle solved using the Ritz method in conjunction with the Newton–Raphson iterative procedure. A three-dimensional finite element model was also developed using ABAQUS to compare the accuracy of the results obtained using the layerwise TSDT. Parametric studies reveal that the types of the graphene distribution pattern and configurations of the delamination zones have a substantial effect on the thermal equilibrium paths and variation of the fundamental frequencies in the pre/post-buckled domains. Moreover, the thermal stability responses of the simply-supported delaminated composite plate with symmetric graded graphene patterns are entirely different from those with asymmetric graphene dispersion. Furthermore, because to the existence of interlaminar flaws (delamination), the variation of fundamental frequencies in both pre- and post-buckled domains differs significantly from those in perfect plate (without any delaminations).
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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) | 0.000 | 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)
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
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