American Society of Civil Engineers


Experimental Behavior and Mechanical Modeling of Dissipative T-Stub Connections


by M. Latour, Ph.D., (corresponding author), (Univ. of Salerno, Civil Engineering Dept., Salerno, Italy. E-mail: mlatour@unisa.it) and G. Rizzano, Ph.D., (Univ. of Salerno, Civil Engineering Dept., Salerno, Italy. E-mail: g.rizzano@unisa.it)

Journal of Structural Engineering, Vol. 138, No. 2, February 2012, pp. 170-182, (doi:  http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000435)

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Document type: Journal Paper
Abstract: This work aims to enhance the energy-dissipation capacity of classical rectangular T-stubs by proposing an hourglass shape for the T-stub flange according to the approach usually adopted for added damping and stiffness (ADAS) devices. A new type of axial damper is developed. First, a mechanical model of the device is set up and a finite-element model is carried out in ABAQUS code. The accuracy of both models is verified through comparison with experimental results. Next, on the basis of cyclic tests, the improvement of the energy-dissipation capacity of classical T-stubs provided by the proposed approach is quantified, and the low-cycle fatigue curves are determined with reference to the case of both T-stubs on rigid support and of coupled T-stubs. The results of the work also represent a useful tool for designing a dissipative double split tee connection.


ASCE Subject Headings:
Damping
Connections
Flanges
Mechanical properties

Author Keywords:
Damper
Connections
T-stubs
Cyclic
ADAS
Dissipation
Fatigue
Modeling
Experimental