Application research of corrugated mild metal shear damper based on damage control and energy-dissipation improvement

Abstract

This study investigates the application of corrugated mild metal shear dampers installed in a frame with a chevron brace for damage control and energy-dissipation improvement. A numerical model of the mild metal shear damper was built to carry out the parametric analysis using the finite element method, and the related high accuracy equations are proposed. Furthermore, the seismic performance of a structure with a bracing system was studied. The stiffness relationship of the structural component in each direction was analyzed, and the recommended range of the key stiffness ratio was proposed. The major results show that both the vertical and horizontal deformations of the frame with the bracing system include three different modes. The proposed stiffness ratio can predict the damage location and energy dissipation performance of a frame with a bracing system. To achieve the combined objective of damage control and energy-dissipation improvement in the engineering design, the recommended range of the stiffness ratio should be employed.