A Design of Shock Resistance Device with SMA Shells
ZHANG Ke 1、2 ; ZHENG Hang 1、2 ; WANG Yu 2、3 ; TANG Zhiping 2
1. State Key Laboratory of Explosion Science and Technology; Beijing Institute of Technology; Beijing 100081; China; 2. Dept of Modern Mechanics; University of Science and Technology of China; Hefei 230027; China; 3 .Naval Academy of Armament; Beijing 100073; China
Abstract:Abstract: By using a composite structure of Titanium Nickel shape memory alloy(SMA) and rubber polymer, a repetitive-use 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 the ansys/ls-dyna finite software. The results show that the shock acceleration attenuation of this device is up to 95% or more, and it can protect the equipment of about 100kg effectively against the shock loading. Compare with the traditional linear spring, it has lower acceleration response and vibration amplitude. Most important, for the hysteretic characteristic from superelastic deformation of SMA, it can attenuate the vibration amplitude rapidly.