الفهرس 
CHAPTER (1): INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Cold Formed Steel: CFS sections are manufactured at lower temperatures than
hot rolled sections, resulting in minimal shrinkage. This process produces a
stronger and more visually appealing product with precise dimensions and
corners, making it ideal for exterior applications. Numerous research studies have
focused on comprehending the structural behavior of CFS column sections, as
well as identifying the factors that influence their capacity, strength, and failure
modes. Different types of web and edge stiffeners has been enhancing the
capacity and efficiency of CFS column sections, which has proven to increase
section capacity and improve structural behavior.
The study investigated the behavior of six cold-formed steel columns with
lipped channel and various web stiffener configurations under axial compression
forces till failure. The research compared the experimental results with Finite
Element (FE) analysis conducted using the ABAQUS program, analyzing the
ultimate load, axial shortening, and failure mode. The columns were made by
brake-pressing cold-formed steel sheets with a nominal thickness of 1.5 mm and
joining identical members with self-drilling screws to form an I-shaped section
with web and edge stiffeners. The test specimens were 1000 mm long and
compressed between fixed base and top hinged end conditions. The study found
a good correlation between the experimental and numerical results. The validated
FE model was used for a parametric study of cold-formed steel columns with
various web stiffener configurations and dimensions. The results showed that
stiffening the web increased the ultimate load and improved the columns’
structural behavior. The study also found that the column with a trapezoidalshaped
stiffener had the highest ultimate load.