Distortion-Induced Fatigue Reassessment of a Welded Bridge Detail Based on Structural Stress Methods

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Quissanga, V (Autor) Outra; Alencar, G (Autor) Outra; Abilio M P De Jesus (Autor) FEUP; Rui Calçada (Autor) FEUP; da Silva, JGS (Autor) Outra

Revista

Título: Metals

Vol. 154

Página Final: 1952

Editora: MDPI

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-00V-T10

DOI: 10.3390/met11121952

Abstract (EN): Typically, bridge structural systems are affected by random loads that can cause significant damage. One challenging problem in this field is the high-stress amplitude associated with distortion-induced fatigue. In this study, the hot-spot method and the master S-N curve method were validated for the evaluation of fatigue resistance induced by distortion in welded joints of steel bridges. Validation of the master S-N curve method in this research was a necessary prior step for application of the method in real case studies of road bridges, which will be subject to loads of variable amplitudes in the near future, ensuring the basis for the application. The method of validation was based on an important available full-scale fatigue test database, which was generated decades ago to serve as the foundation for the assessment of distortion-induced fatigue. Modelling was carried out based on the finite element method with the aid of ANSYS software, considering the shell and solid elements and equivalent structural stresses. The experimental results were compared with the numerical ones obtained with the two methodologies, and the difference, in terms of global and local tension, was less than 1%.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 20