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- AISI standard (1)
- Buckling strength (1)
- CFS design specifications (1)
- Cee and Zee sections (1)
- Cold-formed steel (1)
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- Collapse (1)
- Combined bending and torsion (1)
- Cross sections (1)
- Design (1)
- Diaphragm models (1)
- Loading eccentricity (1)
- Locally slender cross-sections (1)
- Moment-bimoment interaction equations (1)
- Nominal bimoment capacity (1)
- Nominal moment capacity (1)
- Panel diaphragm action (1)
- Parametric study (1)
- Roof systems (1)
- Shell finite element analysis (1)
- Shell finite element model of purlins (1)
- Slender cross-sections (1)
- Standing seam panel system (1)
- Structural design (1)
- Torsion (1)
- Twisting (1)
- Warping (1)
- Z-Purlins (1)
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Cold-Formed Steel Strength Predictions For Combined Bending And Torsion, Yu Xia, Robert S. Glauz, Benjamin W. Schafer, Michael Seek, Hannah B. Blum
Cold-Formed Steel Strength Predictions For Combined Bending And Torsion, Yu Xia, Robert S. Glauz, Benjamin W. Schafer, Michael Seek, Hannah B. Blum
Engineering Technology Faculty Publications
Locally slender cross-section members, such as cold-formed steel Cee and Zee sections, are susceptible to significant twisting and high warping torsion stresses. Torsion considerations are complicated by whether it is derived as a first-order effect from loading or a second-order effect from instability. The current design for combined bending and torsion interaction has some limitations, including only considering the first yield in torsion and ignoring the cross-section slenderness in torsion. Previous work has derived a simple uniform equation to predict the bimoment capacity and two bimoment strength curves for local and distortional buckling under torsion only. This work is extended …
An Updated Analytical Method For Predicting The Bracing Behavior Of Z-Purlin Supported Standing Seam Diaphragm Systems, Michael W. Seek
An Updated Analytical Method For Predicting The Bracing Behavior Of Z-Purlin Supported Standing Seam Diaphragm Systems, Michael W. Seek
Engineering Technology Faculty Publications
Roof systems utilizing Z-purlins as a secondary member supporting a standing seam panel system are used extensively by the metal building industry. The Z-purlins rely on the diaphragm action in the standing seam panel system to provide lateral support and transfer forces to anchorages. The behavior of the standing seam system is highly nonlinear making prediction of the interaction between the Z-purlin and the standing seam system difficult. To better understand the behavior of the interaction between the purlins and the panel system, a series of non-linear shell finite element models were developed based on the test results of simple …