Response Controlling of Corner Lateral Displacements of Structures due to Time-Varying Torsion by using MR Damper

Abstract

This article is all about the combination of an intelligent system such as a photoelectric sensor with MR damper that would be able to control the shear and torsional displacements of buildings. This paper will show how the appropriate algorithm is for current injection into MR Damper in order to control the lateral displacement of structure when the eccentricity of the load and damping forces are changing. In this article by using the CQC, DSC, Vanmark, Humar, Gupta and exact methods the lateral forces, torsional moments, shear stresses and current in MR damper obtained for one storey building with external bracing system. The application of this study is for critical structures such as power plants, military and governmental buildings construction, nuclear power plants, etc. The torsional modes can be very destructive, unpredictable and cannot be calculated with common software so, an exact-method is also utilized.