A Study for Improving Post Buckling Behaviour of Concentric Bracing Based on Numerical Method with SMA
7 Pages Posted: 15 Aug 2019 Last revised: 28 Aug 2019
Date Written: August 15, 2019
The paper displays an investigation for improving the post buckling behavior of concentric bracings. Numerical analysis on bracings was carried out through ANSYS16.1 software. Since the 1994 Northridge and 1995 HyogokenNanbu Earthquakes the utilization of special concentrically braced frames has expanded. But, last discoveries shows restricted ductility and energy dissipation in braced frame systems due to buckling in conventional braces. This makes it unendurable to utilize full limit material properties of the braces in the energy deployed on the structure. So as to assess this limitation, a sidemounted element is used in amidst of the brace and changes the post-buckling conduct of concentric braces and using Shape Memory Alloys (SMA) at this portion as an auxiliary element. In addition, an effort has also made to find the performance of both a conventional and a concentrically braced system with too versatile SMAs through a progression of nonlinear time history investigations to decide the capability of utilizing SMAs in seismic designing applications for the dynamic control of structures. The aftereffect of this investigation show better performance regarding malleability and energy dispersal limit contrasted with the basic concentric supports.
Keywords: Post Buckling; Shape Memory Alloys (SMAs); Local Buckling; Numerical Analysis; ANSYS
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