{"id":"W4404392404","doi":"10.3390/vibration7040056","title":"Numerical Investigation of the Nonlinear Drill String Dynamics Under Stick–Slip Vibration","year":2024,"lang":"en","type":"article","venue":"Vibration","topic":"Drilling and Well Engineering","field":"Engineering","cited_by":5,"is_retracted":false,"has_abstract":true,"ca_institutions":"Memorial University of Newfoundland","funders":"Memorial University of Newfoundland; Mitacs","keywords":"Drill string; Vibration; Nonlinear system; Slip (aerodynamics); Geology; Drill; String (physics); Mechanics; Structural engineering; Physics; Engineering; Mechanical engineering; Acoustics; Aerospace engineering; Theoretical physics","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002746282,0.0002805825,0.0004273625,0.0003278392,0.0002853122,0.0003469072,0.0003184434,0.0006518566,0.00114266],"category_scores_gemma":[0.001142739,0.0001676836,0.0002544035,0.0002546429,0.0006127383,0.0003852333,0.0003570225,0.0002948863,0.00009517093],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002142954,"about_ca_system_score_gemma":0.0003087517,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.002850102,"about_ca_topic_score_gemma":0.001782793,"domain_scores_codex":[0.9999089,0.00002180874,0.000005885679,0.00001495987,0.00003369799,0.00001467175],"domain_scores_gemma":[0.9995721,0.0002702197,0.00005480598,0.00003394683,0.00004751959,0.00002134407],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"simulation_or_modeling","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.00007939129,0.00003837381,0.002466505,0.00008150058,0.00001191987,0.0002160083,0.0001068213,0.9779399,0.01264743,0.001418286,0.0001144412,0.004879367],"study_design_scores_gemma":[0.000003556635,0.00002394969,0.0004491868,0.000001870624,0.000001549227,0.00001098198,0.00001624922,0.9988621,0.0004649367,0.0001101524,0.00005323586,0.000002338746],"study_design_candidate":"simulation_or_modeling","study_design_consensus":"simulation_or_modeling","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9177857,0.0001565731,0.07556655,0.0001152503,0.00002451903,0.00004505544,0.0001258073,0.0002072542,0.005973278],"genre_scores_gemma":[0.9938515,0.00004477179,0.005426964,0.000007438432,0.000002711917,0.00001738065,0.00002922539,0.000006603612,0.0006133013],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.002850102,"threshold_uncertainty_score":0.005667031,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.007082395338632599,"score_gpt":0.1897309046299318,"score_spread":0.1826485092912992,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}