Journal Published Online: 01 November 1988
Volume 16, Issue 6

Plastic Rotation Factors of Three-Point Bend and Compact Tension Specimens



Plastic rotation factors (rp) for three-point bend and compact tension specimens were obtained for a range of normalized crack depths (a/W) from 0.25 to 0.88 and power law hardening materials. The theoretical slip-line field solutions were used for non-strain hardening materials (i.e., n = ∞) and the Kumar-German-Shih finite element plastic displacement solutions for strain hardening materials (i.e., n < ∞) in these rp calculations. For crack depth a/W = 0.50, the factors rp are approximately independent of strain hardening if n > 5 and are in reasonable agreement with those values recommended by ASTM Subcommittee E24.08 for calculation of crack tip opening displacements in these two types of specimens. For n ≤ 5 the error in rp becomes appreciably large.

Author Information

Wu, S-X
University of Sydney, Sydney, NSW, Australia
Mai, Y-W
University of Sydney, Sydney, NSW, Australia
Cotterell, B
University of Sydney, Sydney, NSW, Australia
Pages: 3
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: JTE11276J
ISSN: 0090-3973
DOI: 10.1520/JTE11276J