Different expressions have been developed to determine damping of structures based on various hysteretic models and ductility levels. Since Slenderness ratio is an important parameter on the hysteretic behavior of special concentrically- braced frames (SCBF), in this paper new expressions for determination of damping of such frames are developed based on slenderness ratio and ductility. Two typ...

Cold-formed steel (CFS) shear walls with concrete-filled rectangular steel tube (CFRST) columns as end studs can upgrade the performance of mid-rise CFS structures, such as the vertical bearing capacity, anti-overturning ability, shear strength, and fire resistance properties, thereby enhancing the safety of structures. A theoretical hysteretic model is established according to a previous exper...

• “An Efficient Training Technique for a Neural-Network Controller for Seismically Excited Structures,” (reference [54]) by Liut et al. • “An overview of Some Non-Traditional Neural-Network Training Strategies for Seismic Response Suppression of Building Structures,” (reference [56]) by Liut et al. • “A Modified Gradient-Search Training Technique for Neural-Network Structural Control,” (referen...

The magnetic response of a proximity-coupled superconductor–normal-metal sandwich is studied within the framework of the quasiclassical theory. The magnetization is evaluated for finite values of the applied magnetic field ~linear and nonlinear response! at arbitrary temperatures and is used to fit recent experimental lowtemperature data. The hysteretic behavior predicted from a Ginzburg-Landau...

Obtaining accurate estimates of damping parameters from experimental measurements of structures has been a challenge in the civil engineering community. In general, the confidence level on the identified damping is much lower than that of the identified natural frequencies and mode shape components. Most system identification methods are based on linear system and control theories, while in rea...