关键词: 多股簧, 冲击载荷, 非线性的, 试验分析

Abstract:

In the case of stranded wires helical springs used for the recoil spring, the shock response dynamics model of stranded wires helical springs and each spring coil were established in accordance with the mass-spring-damper model. Through the experiments of shock load, the internal motion regularity of the spring was analyzed, and the modal parameters such as the equivalent stiffness and the equivalent damping were identified. The results indicate that the structure of stranded wires helical springs is nonlinear under the shock load, which can reflect more advantages of damping. The internal motion regularity of the spring is nonlinear either, and the speed of spring coil along the axial direction is no longer a linear distribution.

Key words: stranded wires helical spring, shock load, nonlinear, test analysis