Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Composites: Mechanics, Computations, Applications: An International Journal
ESCI SJR: 0.193 SNIP: 0.497 CiteScore™: 0.39

ISSN Print: 2152-2057
ISSN Online: 2152-2073

Composites: Mechanics, Computations, Applications: An International Journal

DOI: 10.1615/CompMechComputApplIntJ.v5.i3.10
pages 173-193

FE PROGRESSIVE FAILURE ANALYSIS OF ALL-GFRP PULTRUDED BEAM−COLUMN BOLTED JOINTS

Carlo Casalegno
IUAV University of Venice, Dorsoduro 2206, 30123 Venice, Italy
Salvatore Russo
Laboratory of Strength sof Materials, Department of Design in Complex Environment, Iuav University of Venice, Dorsoduro 2206, Convento delle Terese, 30123 Venice, Italy

ABSTRACT

The paper presents the results of an FE progressive failure analysis of two all-GFRP pultruded beam−column bolted joints, aimed at evaluating the moment−rotation characteristics and the failure mechanisms. Different failure criteria are adopted in the analysis and the results are compared. The failure mechanisms and the moment−rotation characteristics of the joints are compared with those of similar pultruded connections. Finally, the dissipation capacity of the joints is investigated through the evaluation of the equivalent viscous damping for hysteretic cycles. The analysis results are presented, in particular, the capability of the analysis approach and of the adopted failure criteria to simulate the failure mechanism of the joints, especially if partially interactive criteria are adopted, that allow one to distinguish between the fibers and matrix failures. Also using the Tsai-Wu criterion failure initiation is detected in correspondence of the cleats' edges. The analysis of the joints subjected to hysteretic cycles points to the availability of some dissipation capacity related to the pseudo-ductile behavior of the joints induced by the damage progression. The adopted failure criteria give similar results for the joints subjected to pure bending, while significant differences are obtained for the joints subjected to the hysteretic cycles.