Stress intensity factor for a central crack in a circular disc

✍ Scribed by Shang-Chow Chang

• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 175 KB
• Volume: 16
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(82)90100-x

✦ 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.