In this paper the size effect on both ultimate strength and failure cone surface formation in pull-out tests under various boundary conditions was studied through precise analysis. This analysis shows that the fictitious crack approach can be extended with two…
In this paper the size effect on both ultimate strength and failure cone surface formation in pull-out tests under various boundary conditions was studied through precise analysis. This analysis shows that the fictitious crack approach can be extended with two orthogonal rod elements as a new technique, which can successfully predict the size effect on the pull- out strength. The numerical investigation has been carried out by a computer simulation using our original program ANACS. Using Arc- length technique the post peak behavior was captured well even when the snap back instability -occures. To judge the validity of the results, the numerical results was compared with the empirical equation of Eligehausen and Sawade (1989), and test results of RILEM report (1991).