The slit damper was introduced to eliminate the defects of the Beam-to-column jumper connections and bracing fittings. This type of damper is able to withstand a large number of loading cycles to reach the rupture stage, as well as structures equipped with this damper. Sustained hysteresis behavior is shown by the relative relative displacement of the classes. Studies done on the fracture damper The shape of the conventional Site showed that the stress concentration was created only at the ends of the strips and the middle portions do not contribute to energy depreciation. In this paper, this paper attempts to modify the conventional gap gap geometry to improve the optimal performance of the damper. . Investigation of the results of the proposed samples in finite element software showed that the distribution of the height of the strips in the gap with the shape of a gradient of 8 degrees so that the maximum height of the bar in the corner and the lowest height of the bar in the middle results in better distribution of tension in the surface Dismantling and increasing the energy depreciation capacity.