Hysteresis Behavior of Thin-Walled Steel Tubular Columns under Cyclic LoadingHysteresis Behavior of Thin-Walled Steel Tubular Columns under Cyclic Loading
Bibliographic record
Abstract
This paper investigates the stability of thin-walled steel tubular columns when subjected to cyclic bidirectional loading.It compares their behavior under conventional cyclic unidirectional loads, examining the decline in strength and ductility due to severe cyclic bidirectional loads using nonlinear finite element analysis and experimental data.Pseudo-dynamic bidirectional tests from existing literature validate the finite element analysis.The results underscore the significance of understanding steel column behavior under bidirectional loading.Both bidirectional tests and finite element analysis reveal the complex behavior of tubular columns, characterized by a circular trajectory post-local buckling.This trajectory leads to a monotonic development of the local buckling bulge and larger residual deformations.In contrast, unidirectional loading tests and analyses tend to underestimate earthquake-induced damage and residual displacements.Thus, it's crucial to consider bidirectional loading effects in evaluating ductility and designing for seismic resistance in steel structures.
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How this classification was reachedexpand
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 | 0.001 |
| Open science | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".