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Item Information   Holdings       More by this author     Matarrese, Vincent, author.     Milwaukee School of Engineering     Subjects     Buckling (Mechanics)     Finite element method -- Mathematical models.     Structural stability (Engineering) -- Mathematical models     MSST Project.     Browse Catalog     by author:      Matarrese, Vincent, author.      Milwaukee School of Engineering       by title:      Finite element buckl...         MARC Display

Finite element buckling analysis comparison with AISC effective length procedures : a report submitted to the faculty of the Milwaukee School of Engineering in partial fulfillment of the requirements for the degree of Master of Science in Structural Engineering / by Vincent Matarrese. by Matarrese, Vincent, author., Milwaukee School of Engineering Subjects Buckling (Mechanics)   Finite element method -- Mathematical models.   Structural stability (Engineering) -- Mathematical models   MSST Project. Description:  123 leaves : illustrations ; 29 cm. Contents:  Introduction, brief history and stability topics -- Stability analysis background -- Methods and example cases used for comparison -- Results and discussion -- Conclusion and recommendations -- Appendix A: Finite element accuracy test -- B: Pinned column end G value analysis -- C: Stability analysis with varying load patterns -- D: Leaning column stability analysis -- E: Stability effects of inelastic members analysis. This thesis project is focused on the use of the effective length method as found in ANSI/AISC 360-10 Steel Manual as a reliable stability analysis method for practicing engineers. The objective is to compare various moment frame stability results with a finite element buckling analysis. Recommendations and findings are based on the comparison results for frames that involve load patterns, leaning columns, effects of inelasticity and other general stability topics. To fully understand the specifics of results, a few baselines were developed with regard to the use of SAP2000, which was the software chosen for finite element analysis. Before any frames were analyzed, accuracy tests were carried out to choose model element totals and a relative joint restraint factor for pinned column supports was determined for use in the effective length method. Once baselines were developed for percent error discussions, frames were chosen to bring certain stability features into focus. Various load patterns were applied to frames with a variety of first and second story loading ratios, leaning column frames were developed with two stability-to-leaning column ratios and inelastic stiffness reductions were applied to the first-story of a frame to test inelastic effects. To measure influences on stability and to understand how the effective length method takes into account these stability influences, percent differences were created with regard to the finite element analysis. In almost all cases it was found that the effective length method, using the alignment charts, yielded results that were more conservative than the finite element analysis. Since the alignment charts found in ANSI/AISC 360-10 only account for the sidesway buckling mode, the largest percent difference results occur on the second-story columns when controlled by other modes. The overall conclusion of the project is that the finite element buckling analysis is the best solution for stability analysis for practicing engineers. If finite element analysis methods are not easily accessed, then it is acceptable to use the effective length method for simple, sidesway governed frames. When frames become more complex due to load patterns or the presence of leaning columns, it is best to ensure a finite element analysis is conducted. Form:  text unmediated volume   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .M377 2015 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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