Multiscale Model of the Effective Properties of the Octet-Truss Lattice Material
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Bibliographic record
Abstract
This paper proposes a multiscale model of the effective properties of a stretching dominated lattice material with octet-truss cell topology. The effective properties are formulated for density, elastic moduli, yield strength and stability and strength collapse surfaces. The material is considered as a multiscale mechanical structure that exhibits specific structural features at each hierarchy order. Efficiencies of the lattice material cell member cross-sections as well as efficiencies of the macroscopic structural cross-sections are considered among the modeling parameters. It is shown that shaping the cell member cross-sections increases the material local buckling resistance. The relation between the microscopic and the macroscopic structuring design parameters is proposed to tailor optimum lattice material properties. An optimization criterion is considered as the structuring that guarantee a coincidence between the three failure modes, namely, the local buckling (buckling of the microscopic cell members), global buckling (buckling of the macroscopic structure) and the lattice material plastic yielding failure. A case study is applied to the octettruss lattice material and property maps are presented to show the contribution of the material in filling the gaps in the property design space.
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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) | 0.000 | 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)
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