Effect of weld shape imperfections on the structural hot-spot stress distribution

11/02/2011

This paper presents a probabilistic study of the effect of the weld shape imperfections on the structural hot-spot stress distribution along the weld toe using the Monte Carlo simulation and the finite element analysis method. A structural detail consisting of a plate strip with a transverse butt-welded joint and a tapered thickness step is used as a case study. The weld shape is modelled based on the weld profile parameters defined as random variables allowing the simulation of typical imperfections as a function of the imperfection level of welding. The analysis uses a linear finite element model built with the second-order solid elements. A finite element analysis program is used to calculate the stress distribution on the vicinity of the weld toe and a standard extrapolation procedure is used to obtain the structural hot-spot stresses. Different weld shape imperfections are generated and their effect on the hot-spot stresses is calculated afterwards. The notch effect of weld toe is not included in the analysis.

Autores da comunidade :

• 

  B

  Bruno Constantino Beleza de Miranda Pereira Gaspar

  ist145052

• 

  Y

  Yordan Garbatov

  ist13951

  Afiliações e fontes

  IST > CENTEC

  Centro de Engenharia e Tecnologia Naval e Oceânica

  IST > DEM

  Departamento de Engenharia Mecânica

  De: orcid

  ID: 71181329

  De: scopus

  ID: 2-s2.0-79951778816

• 

  C

  Carlos Guedes Soares

  ist11869

  Afiliações e fontes

  IST > CENTEC

  Centro de Engenharia e Tecnologia Naval e Oceânica

  De: cienciavitae

  ID: 712544

VoR - Versão publicada

Ships and Offshore Structures

145

159

6

1-2

10.1080/17445302.2010.497052

other-engineering-and-technologies - Outras Ciências da Engenharia e Tecnologias

eng - Inglês

http://dx.doi.org/10.1080/17445302.2010.497052