Analysis of cracks emanating from a circular hole in [0n/90m]s laminates under various boundary conditions

✍ Scribed by S.K. Cheong; C.S. Hong

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 763 KB
• Volume: 32
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(89)90008-8

✦ Synopsis

This paper investigates the problem of cracks emanating from a circular hole in an orthotropic finite plate under various boundary conditions. Three types of boundary conditions, that is, stress conditions, displacement conditions and their combinations are considered. Analysis is based on stress functions satisfying the stress free conditions along the crack. The coefficients of stress functions are determined from boundary conditions by using a modified mappingxollocation method. Then, the stress intensity factors are determined from the coefficients of stress function. Numerical calculations are performed for various finite configurations of [0,/90,], laminates. The results indicate a strong dependence of the stress intensity factor on the material orthotropy, geometry and boundary conditions.