This report documents a finite-element analysis procedure for computation of Mode I and Mode II stress intensity factors associated with one or two sharp cracks emanating from a fastener hole in a panel under uniform tension. The fastener hole may be offset from the panel centerline, and one or both edges of the panel may be integrally stiffened. The formulation of a special assumed-stress hybrid element for the region near the fastener hole is presented. A detailed description of the programming covers the physical problem, modelling, program flow and options, input/output conventions, execution times, and limitations which must be observed. Results are presented for performance tests of the special element, and for some example analyses of cracked panels. (DePo)
Fracture mechanics analysis of centered and offset fastener holes in stiffened and unstiffened panels under uniform tension
Analyse der Bruchmechanik zentrierter und versetzter Befestigungsloecher in verstaerkten und nichtverstaerkten Platten bei gleichmaessiger Spannung
US Government Reports ; 1-185
1976
185 Seiten
Report
Englisch