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The calculation of stress intensity factor KI by the order singular strain circular element

✍ Scribed by Si-Kui Yu; Zhi-Tan Li; Wen-An Cai

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
99 KB
Volume
16
Category
Article
ISSN
0013-7944

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✦ Synopsis

A circular element centered at the crack tip is constructed. According to the first four terms of Williams stress function, the displacement pattern with singularity is given to the circular element, where unknown parameters are considered as generalized nodal displacements. On the interface between the crack tip element and conventional elements, the nodal displacements are made compatible by the matrix method. The stress intensity factor Ki is obtained through the solution of generalized nodal displacements. The results of calculation of examples show that the accuracy and the calculating speed are satisfactory.

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