Abstract
The objective of this study is to investigate the strength of the rectangular plates subjected to cyclic load reversals with varying strain ranges. The finite element solution is implemented to estimate the load-carrying capacity. The influence of the initial imperfections, plate thicknesses and aspect ratio parameters have been accounted for. The cyclic response is predicted by using the material model assumed to follow the combined non-linear isotropic and kinematic strain hardening rules with Von Misses yield criterion accounting for the Bauschinger effect. It has been shown that the type of plastic formation during the cyclic load has a significant influence on the structural capacity and stiffness reduction. The initial imperfection has a significant impact on the ultimate load capacity reduction where the uni-modal initial imperfection type leads to a more stable load transition and plastic formation, reducing the structural capacity during the cyclic load exposure.
Highlights
The cyclic load phenomenon is a common load type that the structures are subjected during their service life
The objective of this study is to investigate the strength of rectangular plates subjected to cyclic load with varying strain ranges
The strength of rectangular plates subjected to cyclic loads has been analysed by employing the finite element method accounting for different plate aspect ratios and thicknesses
Summary
The cyclic load phenomenon is a common load type that the structures are subjected during their service life. 2016 [10] investigated the behaviour of structures, built of mild steel and subjected to the cyclic load accounting for variable strain ranges by applying the displacement controlled load They compared the hysteretic curves as predicted by the finite element solution and experimental results, showing a good agreement. Paik et al, 2008 [21], Xu et al, 2013 [22] and Tekgoz et al, 2018 [23], studied the ultimate shipload carrying capacity using the finite element solution which is based on a force-rotation-controlled static load In these approaches, the structure is allowed to follow a path under a static pure-bending load with an incrementally increasing curvature. 2018 [28] studied the ultimate load-carrying capacity of the ship hull girder under a cyclic load using the Smith’s method and a good agreement has been achieved when compared to the one predicted by the finite element solution. The influence of the initial imperfections, plate thicknesses and aspect ratio parameters have been accounted for
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