TY - GEN
T1 - Eulerian-Lagrangian methods for crack growth in creeping materials
AU - Lee, H. S.
AU - Haber, R. B.
PY - 1993
Y1 - 1993
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:0027831450
SN - 0791812510
T3 - American Society of Mechanical Engineers, Applied Mechanics Division, AMD
SP - 141
EP - 153
BT - Advanced Computational Methods for Material Modeling
A2 - Siginer, Dennis A.
A2 - VanArsdale, William E.
A2 - Altan, Cengiz M.
A2 - Alexandrou, Andreas N.
PB - Publ by ASME
T2 - Proceedings of the 1993 ASME Winter Annual Meeting
Y2 - 28 November 1993 through 3 December 1993
ER -