Hot spot stress and stress concentration factors due to different fabrication imperfections in deck structures

Issue title: Strength and Crashworthiness of Ship Structures

Article type: Research Article

Authors: Chakarov, K. | Garbatov, Y. | Guedes Soares, C.

Affiliations: Centre for Technology and Engineering, Technical University of Lisbon, Instituto Superior Técnico, Lisboa, Portugal

Note: [] Corresponding author. E-mail: [email protected].

Abstract: This work deals with the stress analysis of a longitudinally stiffened welded panel and evaluates the hot spot stress distributions and stress concentration factors that result from different types of imperfections. The hot spot stresses and the stress concentration factors are defined at locations adjacent to the transverse weld. Numerous calculations are performed representing realistic conditions of imperfections and various comparisons of hot spot stress distributions are presented. The stress concentration factor for the cases of pure thickness step changes and for vertical angular imperfections are fit to a quadratic polynomial function.

Keywords: Fatigue, finite element analysis, hot spot stresses

DOI: 10.3233/ISP-2008-0038

Journal: International Shipbuilding Progress, vol. 55, no. 1-2, pp. 47-62, 2008