Strength of Connection with Buried Discontinuity
A research program was conducted to investigate the behavior of buried, midplane laminar discontinuities (laminations) subjected to through thickness tension loads. The study showed that under certain conditions a simple plastic analysis can be used as a tool for calculating a lower limit of the ultimate load of connections containing large buried discontinuities. This assumes that the material is free of abnormal concentrations of nonmetallic inclusions and that the discontinuity is large and continuous compared with the region to which the through thickness loads are applied. For connections containing small buried discontinuities, tearing at lower loads must also be considered. Equations are given that can be used to make a rational approximation of the strength of beam-to-column connections.
In this paper we consider certain prop- erties of an general access structure and its dual. In particular we prove that corer = corerL. We also es- tablish a new upper bound for the size of MSP, which computes connected access structure I?. We show that the size of a MSP is limited above by the sum of the number of minimal and the number of maximal sets minus one. This is the first upper bound on the size of MSPs to our knowledge.