SYMPOSIA PAPER Published: 01 January 1977
STP27988S

Finite-Element Analysis of Crack Growth Under Monotonic and Cyclic Loading

Source

An elastic-plastic (incremental) finite-element analysis, in conjunction with a crack-growth criterion, was used to study crack-growth behavior under monotonic and cyclic loading. The crack-growth criterion was based on crack-tip strain. Whenever the crack-tip strain equals or exceeds a critical strain value, the crack grows. The effects of element-mesh size, critical strain, strain hardening, and specimen type (tension or bending) on crack growth under monotonic loading were investigated. Crack growth under cyclic loading (constant amplitude and simple variable amplitude) were also studied. A combined hardening theory, which incorporates features of both isotropic and kinematic hardening under cyclic loading, was also developed for smooth yield surfaces and was used in the analysis.

Author Information

Newman, JC
NASA-Langley Research Center, Hampton, Va
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Details
Developed by Committee: E08
Pages: 56–80
DOI: 10.1520/STP27988S
ISBN-EB: 978-0-8031-4709-6
ISBN-13: 978-0-8031-0319-1