The performance of low-yield-strength steel shear-panel damper with without buckling

Low-yield-strength steel (LYS100, yield stress 100 N/mm 2 ) is utilized here to design a shear panel damper for its high ductility. Deformation capacity of the low-yield-strength steel shear panel damper (LYSPD) is known to be affected by out-of-plane buckling which denies precise prediction by the buckling ratio obtained using empirical equations. Therefore, a preliminary investigation into the relationships between the buckling ratio and the deformation capacity of LYSPD is made via static increment tests. A modified equation is proposed to address plastic deformation for the design. As the loading speed of LYSPD goes rather high with large deformation capacity, dynamic tests are conducted to ascertain whether the out-of-plane buckling is affected by the loading speed. Test results reveal that the influence of loading speed on the LYSPD’s out-of-plane buckling is negligible and high deformation capacity is advisable for the application of LYSPD to the design of the damper.