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Simplified Models for the Material Characterization of Cold-Formed RHS
Carlos López-Colina1, Miguel A Serrano2, Miguel Lozano3
1Department of Construction and Manufacturing Engineering, University of Oviedo, Building 7, Campus of Gijón/Xixón, 33203 Asturias, Spain. lopezpcarlos@uniovi.es.
Materials (Basel, Switzerland)
|September 8, 2017
Summary
Cold-forming rectangular steel hollow sections increases material strength, impacting structural resistance. This study compares simplified methods for accounting for this hardening in structural design and analysis.
Area of Science:
- Structural Engineering
- Materials Science
- Mechanical Engineering
Background:
- Cold-forming rectangular steel hollow sections enhances material strength, particularly at the corners.
- This material hardening significantly affects the structural performance and connection resistance of steel structures.
Purpose of the Study:
- To compare simplified approaches for analyzing cold-formed steel hollow sections with homogeneous material properties.
- To evaluate the accuracy of simplified methods against finite element analysis of stub column tests.
Main Methods:
- Finite element modeling (FEM) of stub column tests was employed.
- Material properties from the flat faces were assumed to be uniform across the entire section profile in the models.
- Results from simplified homogeneous material models were compared.
Main Results:
- Simplified approaches considering homogeneous material properties provide a viable alternative for analyzing cold-formed steel hollow sections.
- The study quantifies the differences between simplified methods and detailed analysis.
Conclusions:
- Simplified methods can effectively approximate the behavior of cold-formed steel hollow sections, facilitating design calculations.
- Further research can refine these simplified approaches for enhanced structural design accuracy.
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