ArticleScientific reports2025
Bolt loosening evaluation method based on normalized screw root equivalent stress and loosening life curve.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Bolt Preload Identification Method Based on Multi-Frequency Guided Wave Reconstruction and Spectral Centroid Fusion.Sensors (Basel, Switzerland) · 2026Article
- Operational characteristics and blade fatigue life analysis of a novel variable-pitch wind turbine under natural wind conditions.Scientific reports · 2025Article
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Authors and funding
7 authors.
Funding
Abstract
Bolts are subject to complex loads and prone to loosening failure in transverse random service environments. To establish a loosening life evaluation method applicable to different types of bolts, numerous bolt clamping-force recession curves were obtained by bolt-loosening tests, and the relationship between the transverse displacement external load and loosening life (D-N curve) was established. Subsequently, an equivalent model of the bolt external load and screw load was established based on Castigliano's theorem, and an equivalent model of the screw load and screw-tooth root stress was established based on the deformation coordination equation of elastic mechanics. Based on the above bolt-load equivalent models, the screw-tooth root stresses were equivalently characterized by the transverse displacement of the bolted connection, and then the screw-tooth root equivalent stress-loosening life curve (S
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