Abstract
An appropriate evaluation of residual stress is of great importance for the structural performance of corrugated web I-beams under monotonic and cyclic fatigue loading. An experimental programme is presented to examine the residual stress distribution of corrugated web I-beam sections using hole-drilling method. It was found that, unlike flat web I-beam sections, the residual stresses on the beam flange are varied from the location with longitudinal fold to that with the inclined fold of the corrugated web. The results of validated finite element models demonstrate that the distribution of maximum residual tension stress is notably affected by its location on the flange related to corrugation. Moreover, the maximum residual stress is reduced with wider distributing range with the increase of the corrugation angle and curvature radius, especially for the flange part. A residual stress distribution model allowing for above mentioned influencing parameters was proposed and validated against test results, thus demonstrating an improvement of referred analytical models.
Published Version
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