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Record W3120157679 · doi:10.22215/etd/2020-14178

Multiscale Design Optimization of Hopper Cars Employing Functionally Graded Honeycomb Sandwich Composites

2020· dissertation· en· W3120157679 on OpenAlex
Ayman Al-Sukhon

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldEngineering
TopicTopology Optimization in Engineering
Canadian institutionsCarleton University
FundersTransport Canada
KeywordsTopology optimizationRigidity (electromagnetism)HoneycombMinificationStructural engineeringBeam (structure)Optimal designFrame (networking)Hexagonal crystal systemSpace frameMaterials scienceHoneycomb structureReduction (mathematics)Computer scienceTopology (electrical circuits)Finite element methodMechanical engineeringMathematical optimizationEngineeringComposite materialMathematicsGeometry

Abstract

fetched live from OpenAlex

A novel multi-stage structural design optimization procedure has been developed for the weight minimization of hopper cars. The procedure has been tested under various loading conditions according to guidelines established by regulating bodies, as well as a novel load It is often said that we stand on the shoulders of giants, and throughout this thesis, thankfully, I had some big ones in my corner. First and foremost, thank you to my research adviser, Professor Mostafa ElSayed, who had the difficult and stressful task of navigating me through my research while simultaneously allowing me the freedom to pursue my interests. Thank you also to the folks at the MAE department who work in the background to keep things moving, and a special thanks to Neil McFadyen for his efforts in helping me with my computing issues. I was also surprised to find out during my research that there are, in fact, kind strangers on the internet. Thank you to all the members and staff of the Altair forums, particularly Simon Kriznik for helping me in the establishment of my explicit model. Thank you to my father, Bashar, and to my mother, Rola, for listening to all my woes non-stop and being my rock at my toughest moments. Thank you for instilling in me the vigor to pursue a career in STEM, giving me the drive to succeed, and for being the official sponsors to my dream of being an engineer.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.533
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.013
GPT teacher head0.212
Teacher spread0.199 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Quick stats

Citations1
Published2020
Admission routes2
Has abstractyes

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