Fracture Mechanics Approaches to Modeling the Pullout of Anchor Bolts


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Title: Fracture Mechanics Approaches to Modeling the Pullout of Anchor Bolts

Author(s): L. Elfgren and S. E. Swartz

Publication: Special Publication

Volume: 134


Appears on pages(s): 63-78

Keywords: anchors (fasteners); cracking (fracturing); crack propagation; damage; finite element method; fracture properties; models; research; Design

Date: 9/1/1992

Summarizes and presents preliminary results of a round-robin analysis of anchor bolts organized by RILEM TC 90-FMA, Fracture Mechanics of Concrete-Applications. The analyses employed finite element models using fracture mechanics approaches for the most part. The assumptions used in establishing the material/cracking models varied with investigator and included linear elastic fracture mechanics (LEFM), the fictitious crack model (FCM) with linear softening or non-linear softening, a fixed crack line, a variable crack line with non-rotating cracks or rotating cracks. Crack propagation was determined using Mode I parameters, in some cases, with consideration of mixed mode behavior.