【摘要】 利用TiNi形状记忆合金材料及橡胶高聚物,组合设计了适用于潜艇平台的可反复使用的抗冲击装置,并对其在不同冲击脉宽和峰值作用下的抗冲击特性进行了数值研究,结果表明该抗冲击装置对冲击加速度的衰减高于95%,可以对100kg左右的机电设备提供有效的抗冲击防护。将该装置与传统的线性弹簧抗冲击系统进行了比较,其相对变形量及加速度响应均小于线性抗冲击系统,更为重要的是,变形过程中的能量滞回能够有效的衰减振动能量,使振动幅值迅速减小。更多还原

【Abstract】 By using a composite structure of titanium nickel shape memory alloy(SMA) and rubber polymer,a repetitively used shock-resistance device for submarine platform was designed.The shock-resistance characteristics of this device subjected to different pulse durations and amplitudes were simulated numerically with ANSYS/LS-DYNA finite software.The results showed that the shock acceleration attenuation with this device is up to 95% or more,and it can protect equipments of 100kg effectively against shock loading;compared with the traditional linear spring,it has lower acceleration response and vibration amplitude;with hysteretic characteristic due to superelastic deformation of SMA,it can attenuate vibration amplitude rapidly.更多还原