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Item Information   Holdings       More by this author     Markgraf, Ryan.     Subjects     Bolts and nuts -- Testing     Rivets and riveting -- Testing     Finite element method     ANSYS (Computer system)     MSST Project.     Browse Catalog     by author:      Markgraf, Ryan.       by title:      Finite element analy...         MARC Display

Finite element analysis of a Rivnut connection / by Ryan Markgraf. by Markgraf, Ryan. Subjects Bolts and nuts -- Testing   Rivets and riveting -- Testing   Finite element method   ANSYS (Computer system)   MSST Project. Description:  105 leaves : ill. ; 29 cm. Contents:  Thesis advisor: Christopher Raebel. Committee members: Dr. Hans Peter Huttelmaier, Dr. Douglas Stahl. Introduction -- Literature review -- Rivnut discussion -- Finite element analysis -- Physical testing -- Conclusions and recommendations -- References -- Bibliography -- A: ANSYS Workbench. This research project focuses on the tensile capacity of Rivnut connections. A Rivnut is a type of fastener used in steel construction that requires "blind" connections, often associated with Hollow Structural Section (HSS) tubes. The research consists of finite element analysis, using ANSYS Workbench, and physical testing conducted at the Milwaukee School of Engineering. For the finite element analysis, two types of finite element models were constructed. The first was used to explore the stresses created by the Rivnut installation process. The second was a simplified model used to explore the load versus displacement relationship of a Rivnut under tensile loading. Destructive physical testing was conducted to compare results to the finite element analysis. The tests were simple tension tests that were designed to limit the tested variables to those related only to Rivnut tension failure. Loads were applied using a hydraulic piston and displacements were measured using a linear variable displacement transducer (LVDT). The results of both the finite element analysis and the physical testing are analyzed separately and then compared to one another. The results of the finite element analysis closely matched those of the physical testing through the elastic range. It was also able to predict an initial yielding load that was near the load at which the physical specimens began to yield. The specimens were found to behave similarly in the plastic range. Each specimen reached its yield plateau, gathered post-elastic stiffness, and failed due to Rivnut flange shear. It was concluded that the finite element analysis is valid for modeling Rivnut tensile stiffness through the linear elastic range. Recommendations for future research exploration of different Rivnut loading directions, finite element analysis of the plastic loading range and fracture analysis using ANSYS, effect of various plate thicknesses and hole sizes, and use of automated mechanical loading for further testing.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .M357 2011 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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