Efficient crack analysis of dynamically loaded structures using a modal superposition of stress intensity factors

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Albuquerque, C (Author) Other; de Castro, PMST (Author) FEUP; Calcada, R (Author) FEUP

Journal

Title: Engineering Fracture Mechanics

Vol. 93 No. October

Pages: 75-91

ISSN: 0013-7944

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 10 Citations

ISI Web of Science

Scopus - 13 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

CORDIS: Technological sciences > Engineering > Mechanical engineering ; Technological sciences > Engineering > Civil engineering

Other information

Authenticus ID: P-002-53S

DOI: 10.1016/j.engfracmech.2012.06.009

Abstract (EN): The fatigue analysis of large engineering structures using Fracture Mechanics is usually conditioned by the computationally expensive numerical models needed, leading to difficult use in dynamic analyses. This paper presents a novel methodology developed with the aim to overcome the above mentioned limitation. A new concept, of modal stress intensity factor, arises, allowing a strong reduction of the calculations needed, yet keeping the accuracy. This methodology was tested using a simple example. Results were in excellent agreement with those obtained with common procedures and with widely accepted handbook expressions. The methodology proved to be compatible, also, with the utilization of submodeling techniques.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 17