Bent metal damper and design method

The invention discloses a bent metal damper and a design method, and belongs to the technical field of civil engineering damping control. The bent metal damper comprises a first straight line section, a second straight line section and a middle bent energy dissipation section which are equal in thickness, the middle bent energy dissipation section is composed of a curved surface energy dissipation section and an arc-shaped connecting section, and one end of the first straight line section and one end of the second straight line section are connected with the curved surface energy dissipation section through the arc-shaped connecting section. The device is simple in structural modeling, simple and convenient in manufacturing process, low in cost, beneficial to replacement after earthquake damage, suitable for scientific research tests of damping structures with very small yield displacement and yield force, also suitable for being used in damping or reinforcing of actual engineering building structures, and ha