Finite element modelling for SCFs in steel tubular T-joints with concrete-filled chords under axial loading in the brace

Speaker: Fidelis Mashiri

Affiliation: University of Western Sydney

Time: Monday 08/12/2014 from 14:00 to 15:00

Venue: Access Grid UWS. Presented from Penrith (Y239), accessible from Parramatta (EB.1.32) and Campbelltown (26.1.50).

Abstract: Welded joints made up of steel circular hollow section (CHS) brace welded to concrete-filled circular hollow section (CFCHS) chord are being increasingly used in civil engineering applications especially in bridge and tower structures. These structures are subjected to cyclic loading. Stress concentration factor (SCF) analysis is carried out for welded T-joints made up of steel circular hollow section brace welded onto concrete-filled circular hollow section chord. A finite element model has been developed employing ABAQUS software to simulate the performance of T-joints with concrete-filled chords under axial force on the brace. The hot spot stresses have been obtained by linear extrapolation of the stresses in the region recommended by CIDECT. The outcome of the numerical simulation is verified using existing experimental results.

Biography: Dr. Fidelis Mashiri is a Senior Lecturer in Civil Engineering (Structural Engineering) at the University of Western Sydney. Prior to joining the University of Western Sydney, he was a lecturer at the University of Tasmania. Before then he was a research fellow at Monash University following the completion of his PhD at the same university. Fidelis has worked as a site engineer on dam projects in Zimbabwe and as a consulting engineer in Chile and Australia. Fidelis is a member of the Institution of Engineers (Australia), the Welding Technology Institute (WTIA) and the Australian Steel Institute (ASI).. He is currently a member of the Australian Standard Committees on Steel Structures, BD-001, Cold-Formed Steel Structures, BD-082 and Security Screen Doors and Window Grilles, CS-023.