Mode-III Stress Intensity Factor by Williams Element with Generalized Degrees of Freedom
2012 ◽
Vol 487
◽
pp. 242-246
◽
Keyword(s):
Mode Iii
◽
Williams series are developed for mode III cracks, based on which the displacement field is defined in the singular region around the crack tip. The Williams element with generalized degrees of freedom (GDOFs) is proposed for analysis of stress intensity factor (SIF) of mode III crack. The SIF at the crack tip can be evaluated analytically by one of the undetermined constants of the Williams element. The influence of the relative length of the crack on the SIF is investigated. Three important parameters for the Williams element, including the radial scale factor, the number of subelements and the terms of the Williams series, are discussed in detail. Numerical example shows that the Williams element is of accuracy and efficiency.
2012 ◽
Vol 204-208
◽
pp. 4391-4395
1981 ◽
Vol 15
(1-2)
◽
pp. 115-121
◽
Keyword(s):
1980 ◽
Vol 16
(10)
◽
pp. 945-955
Keyword(s):