高过载数据储存器缓冲隔振结构的优化设计

根据应力波理论设计储存器的缓冲隔振结构,同时兼顾缓冲与隔振、配置合理的广义阻抗比,从而设计出复合减振结构,解决了狭小空间的抗冲击问题。再应用Isight与Ls-dyna联合优化,不以降低过载加速度为指标,而选取最大动应力为目标,使被保护元件的最大动应力降低了约70.9%,储存器的质量下降了约300g,最终进行了炮击实验,成功回收数据。

Optimization design for the buffer and shock absorption structure of a data recorder under high load

According to the stress wave theory,the buffer and shock absorption structure of a data recorder was designed by considering the reasonable allocation of the generalized impedance ratio.The composite structure for shock absorption was designed to solve the problem of narrow space impact protection.And the optimization was carried out by combining Isight and Ls-dyna to reduce the dynamic stress of the protected component rather than the impact acceleration.As a result,the dynamic stress of the protected component decreases by about 70.9% and the mass of the data recorder reduces 300 gram.In the end,the bombardment test was performed and the data were recovered successfully.