@article{James Matthew L. De Jesus_Bernardo A. Lejano_2018, title={AN INVESTIGATION ON THE STRENGTH OF AXIALLY LOADED COLD-FORMED STEEL Z-SECTIONS}, volume={14}, url={https://geomatejournal.com/geomate/article/view/660}, abstractNote={<p>Cold-formed steel (CFS) provides high strength-to-weight ratios that prove efficient in the<br>construction of steel structures. CFS Z-section members exhibit buckling failures that may be difficult to<br>predict due to complexity in geometry. There exists a gap in experimental and computational studies done in<br>the Philippines regarding the structural performance of locally-produced CFS members. The objective of this<br>study is to investigate the load-carrying capacity of Z-section CFS members when subjected to axial<br>compression using experimental and computational methods. The study considers a total of 180 member<br>samples with one section shape, six different lengths and six different thicknesses. Experimentally, the CFS<br>members were subjected to compression loads using a standing steel frame with a hydraulic jack, a load cell<br>and 4 displacement transducers to record the parameters needed for the investigation. High-speed video<br>recordings were used to verify the different failure modes. These are then compared to computational results<br>as per the National Structural Code of the Philippines (NSCP). Furthermore, the study also provides a<br>comparison of experimental and computational results with Finite Element Method (FEM) using ANSYS.<br>The main failure modes were torsional-flexural and distortional buckling. Torsional-flexural buckling was<br>observed in 74.01% of the samples. Although 72.88% of the failure modes were predicted correctly, it was<br>found that the provisions in the NSCP in predicting the strength of the member were relatively high with<br>respect to the experimental and FEM results. This means that the predicted strength was non-conservative. It<br>was also found that a modification factor of 0.52 can be used to achieve similar results between the predicted<br>and actual strength of the member.</p>}, number={42}, journal={GEOMATE Journal}, author={James Matthew L. De Jesus and Bernardo A. Lejano}, year={2018}, month={Feb.}, pages={30–36} }