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Abstract
Problem statement: In this research, four reduced End Plate Moment Connection (EPMC) specimens (T-stubs) are tested to verify the numerical and theoretical methods for preanalysis of the Low Cycle Fatigue (LCF) behavior of a four-bolt extended unstiffened EPMC. Approach: The T-stub specimens are bolted to a support frame and a monotonic load is applied to the stem plate. Yield line theory and the Kennedy method are used to analyze the strength of the end plates and bolts. The Finite Element Model (FEM) and experimental tests are used to verify the theoretical calculations. Results: The theoretical calculations, FEM results and experimental test results show reasonable relationships. Conclusion: The theoretical calculations could be used to predict LCF behavior of specimens.
Highlights
The two main limit states that control the design of the end plate are end plate flexural yielding and bolt tension rupture
The focus of this study is to present the details and results of the first task of the larger research program
As an alternative seismic moment resisting frame connection, the End Plate Moment Connection (EPMC) became the subject of focus after the Northridge earthquake of 1994
Summary
The two main limit states that control the design of the end plate are end plate flexural yielding and bolt tension rupture. Extensive studies have been conducted on the analysis and design of EPMCs using yield line. The early studies, neglect the prying action in the end plate design procedure. F × Disp = (mpxθnxl n + mpyθnyl n ) (3). One of the important assumptions in yield line theory is the yield line pattern. This yield line pattern was developed based upon the observed behavior of the T-stub in the experimental investigation
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