The calculation of the stress intensity factor KI for a special open ring compact tension specimen

✍ Scribed by Hai-Ping Hu; Wen-An Cai; Si-Kui Yu

• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 99 KB
• Volume: 16
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(82)90098-4

✦ 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 and the calculating speed are satisfactory.