Dynamic behaviour of a tractor/quadaxle trailer with variable length drawbar
Why this work is in the frame
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Bibliographic record
Abstract
This paper describes the results of a study of the directional performance of a common Canadian log–hauling truck making use of a tridem–axle tractor, equipped both with and without a forced–steering tag–axle or pusher–axle, in comparison to the conventional fixed tandem–axle tractor. The entire vehicle chosen for analysis consists of a tractor/quadaxle trailer combination; it includes a tractor, a dolly, and a trailer joined to the tractor by a long payload (logs). The dolly, too, is joined to the tractor by a variable length drawbar. The objective is to develop and apply a mathematical model to examine the influence on the vehicle's directional performance of different steering ratios between the tractor's front wheels and the tag–axle or pusher–axle. Different methods for selecting the steering ratios are discussed. The vehicle's directional performance is evaluated against selected performance measures, namely, friction demand at the tractor drive axles, degree of understeer, offtracking, and rearward amplification.
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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