Eulerian-Lagrangian methods for crack growth in creeping materials

H. S. Lee, R. B. Haber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Ductile, history-dependent material behavior governs crack growth in metal structures that are exposed to high temperatures over extended periods, such as nuclear power plants and gas turbines. This paper presents a finite element analysis of quasi-static, ductile crack growth in a Norton-Soderberg power-law-creeping material. Asymptotic solutions for this problem are available (Hui and Riedel, 1981; Hui, 1986; Delph and Stengle, 1989), but few numerical solutions have been published (Hawk and Bassani, 1986). The present work (Lee, 1991) uses an Eulerian-Lagrangian description (ELD) kinematic model (Koh and Haber, 1986; Koh, Lee and Haber, 1988) to represent crack growth in a continuous fashion. This supports consistent integration of the equations of motion and the material evolution equations in the critical crack-tip region in both steady-state and transient crack growth simulations. New results obtained with an ELD moving-grid finite element model are presented for mode-III creep crack growth problems.

Original languageEnglish (US)
Title of host publicationAdvanced Computational Methods for Material Modeling
EditorsDennis A. Siginer, William E. VanArsdale, Cengiz M. Altan, Andreas N. Alexandrou
PublisherPubl by ASME
Pages141-153
Number of pages13
Volume180
ISBN (Print)0791812510
StatePublished - 1993
EventProceedings of the 1993 ASME Winter Annual Meeting - New Orleans, LA, USA
Duration: Nov 28 1993Dec 3 1993

Other

OtherProceedings of the 1993 ASME Winter Annual Meeting
CityNew Orleans, LA, USA
Period11/28/9312/3/93

ASJC Scopus subject areas

  • Mechanical Engineering

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