Abstract
Portable footbridge provide a solution that will aid a person carrying a load in crossing streams; which is portable, easy to install and dismantle. In this paper effort has been made to design and optimize such footbridge. The basic emphasis has been given to minimize the total deformation of the structural member by optimizing the cross sections, material properties and weight. The structural member consists of a rectangular plate of length 1.5m, 0.5m width and thickness of 3mm fixed on the frame of prismatic beams at the periphery and in between. A three dimensional model was developed using SolidWorks. Six different cross sections (circular, rectangular and square with solid and hollow sections) of the beam with three different materials (Aluminium alloy, Structural steel and Titanium alloy) were analyzed in ANSYS 11.0 with similar loading and support conditions. The results obtained, after analysis of different cross sections and with different materials, were compared. Rectangular hollow beam of Aluminum alloy with dimension 60mm×40mm×3mm (thickness) was considered for the structural member of the portable footbridge after optimization.
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