The technical note investigates the tensile force-displacement response of the hysteretic steel yielding brace known as Crescent Shaped Brace and characterized by a boomerang-like geometrical shape. The force-displacement curve is governed by three key performance points which correspond to the transition points separating the initial elastic behaviour, the flexural plastic behaviour, the geometrical hardening behaviour and the final axial plastic behaviour.

In particular, the influence of the main geometrical parameter of the device, the so-called “lever arm”, on the strongly non-linear force-displacement behavior is analyzed by means of a simplified kinematic model. Based on this, analytical estimations of the key performance points are derived and compared with numerically simulated force-displacement curves.

技术说明研究了被称为新月形支撑的滞回钢屈服支撑的张力位移响应，其特征是回旋镖状几何形状。力-位移曲线由三个关键性能点控制，这些点对应于分隔初始弹性行为、弯曲塑性行为、几何硬化行为和最终轴向塑性行为的过渡点。

特别是，通过简化的运动学模型分析了设备的主要几何参数，即所谓的“杠杆臂”对强非线性力-位移行为的影响。在此基础上，推导出关键性能点的解析估计，并与数值模拟的力-位移曲线进行比较。