scispace - formally typeset
Search or ask a question
Author

B. Macdonald

Bio: B. Macdonald is an academic researcher from Bethlehem Steel. The author has contributed to research in topics: Crack growth resistance curve & Compact tension specimen. The author has an hindex of 1, co-authored 1 publications receiving 287 citations.

Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, a design rationale for materials which contain flaws caused by metallurgical inclusions, fabrication and erection overloads, and fatigue cracking is outlined for materials that contain flaws.

303 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: A comprehensive view of the state-of-the-art research on various aspects of the fracture of bulk metallic glasses, including fracture behavior and characteristics, fracture mode, fracture criterion, fracture toughness, and fracture morphology, is presented in this article.

391 citations

Journal ArticleDOI
TL;DR: In this article, a model of a crack propagating through a finite element mesh under mixed mode conditions is presented, and three different crack growth criteria and the respective crack paths prediction for several test cases are compared.

328 citations

Journal ArticleDOI
TL;DR: In this paper, the authors give a mathematical formulation of a variational model for the irreversible quasi-static evolution of brittle fractures proposed by G. A. Francfort and J.-J. Marigo, and based on Griffith's theory of crack growth.
Abstract: We give a precise mathematical formulation of a variational model for the irreversible quasi-static evolution of brittle fractures proposed by G. A. Francfort and J.-J. Marigo, and based on Griffith's theory of crack growth. In the two-dimensional case we prove an existence result for the quasi-static evolution and show that the total energy is an absolutely continuous function of time, although we cannot exclude the possibility that the bulk energy and the surface energy may present some jump discontinuities. This existence result is proved by a time-discretization process, where at each step a global energy minimization is performed, with the constraint that the new crack contains all cracks formed at the previous time steps. This procedure provides an effective way to approximate the continuous time evolution.

304 citations

Journal ArticleDOI
TL;DR: In this article, a variational model for the irreversible quasi-static evolution of a brittle fracture was proposed based on Griffith's theory of crack growth, and the total energy is an absolute continuous function of time, although the bulk energy and surface energy may present some jump discontinuities.
Abstract: We give a precise mathematical formulation of a variational model for the irreversible quasi-static evolution of a brittle fracture proposed by G.A. Francfort and J.-J. Marigo, and based on Griffith's theory of crack growth. In the two-dimensional case we prove an existence result for the quasi-static evolution and show that the total energy is an absolutely continuous function of time, although we can not exclude that the bulk energy and the surface energy may present some jump discontinuities. This existence result is proved by a time discretization process, where at each step a global energy minimization is performed, with the constraint that the new crack contains all cracks formed at the previous time steps. This procedure provides an effective way to approximate the continuous time evolution.

284 citations

Book ChapterDOI
TL;DR: The successful use of linear elastic fracture mechanics theory in predicting brittle fracture in isotropic domains with cracks is attributed to the successful correlation of a single parameter, namely the stress intensity factor, with experimental observations for the determination of failure initiation or crack propagation as mentioned in this paper.
Abstract: The successful use of linear elastic fracture mechanics theory in predicting brittle fracture in isotropic domains with cracks is attributed to the successful correlation of a single parameter, namely the stress intensity factor, with experimental observations for the determination of failure initiation or crack propagation.

247 citations