1,720,967 research outputs found
Simplified method for flexural failure analysis of steel-concrete composite beams post-tensioned with external tendons
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Influence of abutment restraints on the seismic response of multi-span continuous bridges
No full textValidation of a HDR-based device model by experimental tests on a steel-concrete composite frame
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dynamic systems with high damping rubber: nonlinear behaviour and linear approximation.
No full textHigh damping rubber (HDR) shows a quite complex constitutive behaviour, which is nonlinear with respect to strain and is dependent on the strain rate. In addition, it exhibits a transient response during which the material properties change (scragging or more generally the Mullins effect). A number of recent works were dedicated to analysing and modelling material behaviour. This paper studies the nonlinear dynamics of systems with restoring force produced by HDR-based devices in order to propose a procedure to define equivalent linear models considering both transient and stationary behaviours. The reliability of these linear models is tested by evaluating the upper and lower bounds of the seismic response of a structural system equipped with HDR-based devices (structural system with dissipative bracings and isolated systems)
Finite element response sensitivity analysis of steel frames equipped with bucking-restrained braces
No full textThis work focuses on response sensitivity analysis of steel frame structures equipped with BRBs within a displacement-based finite element formulation. A realistic 4-storey steel frame equipped with buckling-restrained V-bracings systems is used as benchmark problem. Selected sensitivity analysis results are shown for quantifying the effect and relative importance of design cross section areas of BRBs in regards to the nonlinear dynamic response under seismic ground motions of the benchmark structure
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