Elastic-plastic analysis of biaxially loaded center-cracked plates

✍ Scribed by N.P Betegon; O Kolednik; V.P Naumenko

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 722 KB
• Volume: 36
• Category: Article
• ISSN: 0020-7683
• DOI: 10.1016/s0020-7683(98)00257-1

✦ Synopsis

Center!cracked panels loaded in biaxial tension are examined in this paper[ Calibration relations for the J integral and the Q constraint factor are presented for a RambergÐOsgood power law hardening material under plane stress and plane strain loadings[ Two cases are examined] an isolated crack and a periodic array of cracks both under biaxial loading conditions[ The latter has previously been studied for plane stress conditions[ A number of di}erent J estimation schemes are proposed based on the remote load and displacement and their dependence on geometry\ biaxiality\ and material properties is discussed[ The variation of constraint\ as characterised by Q\ is also presented for plane stress and plane strain conditions[ Simple slip line _eld solutions are derived for perfectly plastic conditions and the resulting limit load solutions are compared with numerically determined values[ Implications for failure of cracked plates under biaxial loading are discussed[