Nonlinear Finite Element Analysis and Comparison of In-Plane Strength of Circular and Parabolic Arched I-Section Cellular Steel Beam

The advancement in steel fabrication technology extends the structural and constructional advantages of cellular beams into arched structure members. However, less attention is given to understanding in-plane out-of-plane behavior performance beams. This article presents a numerical study using finite element package ABAQUS investigate effect arch axis geometry (circular parabolic) impact end support types on inelastic buckling strength mode I-section In nonlinear analysis model material nonlinearity, second-order due large deformation initial geometric imperfection was incorporated predicting load mode. Furthermore, results were verified by comparing them existing experimental work. Test models covering shallow deep arches subtended angle range 45–180 investigated under uniformly distributed vertical loads mid-span point loads. It found that fairly replicate work post-buckling behavior. From parametric investigation, it parabolic are structurally more efficient than their equivalent circular Pinned free conditions result reduced ultimate capacity members when compared other possible types. an has no noticeable