Research on transverse impact performance of pipe-in-pipe structure
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.
Bibliographic record
Abstract
Pipe-in-pipe structure are widely used in offshore oil and gas transportation. The structure is subjected to various dynamic loads such as earthquakes and vortex-induced vibrations during service, of which transverse impact is the main cause of structure damage. At present, the whole process analysis and parameter analysis of the pipe-in-pipe structure under the action of impact are not systematic and complete. Based on the explicit dynamic software LS-DYNA, the finite element model of the pipe-in-pipe structure was established, and a systematic parametric analysis was carried out on the parameters of the pipe-in-pipe structure. Based on the three aspects of force, displacement and energy absorption, the influence of the three parameters of span, diameter ratio and thickness ratio on the impact resistance of the tube-in-tube structure is revealed. The research results show that the impact force time-history curve of the pipe-in-pipe structure can be divided into five stages. The resistance of the tube-in-tube structure to impact is significantly influenced by the ratio of thickness and span.
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 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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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