某型舰载发射装置后坐缓冲仿真分析

Simulation Analysis of Recoil Buffer for a Ship-borne Launcher

摘要:

为减小某新型舰载发射装置后坐力，采用压溃式缓冲件进行模拟分析，通过压溃式材料吸收发射装置后坐力。通过舰载发射装置实弹射击采集后坐力曲线，运用有限元分析软件 LS-DYNA 对后坐力冲击及缓冲过程进行了仿真计算，对比分析缓冲件在不同状态时的缓冲效果。仿真分析表明：缓冲件为 30 mm×30 mm ×20 mm 的立方体结构泡沫铝材料时，后坐力峰值为基准峰值的 45.58%；同等尺寸规格下，厚度越大的缓冲件吸能缓冲效果越好；同等厚度下，截面积越大的缓冲件吸能缓冲效果越好；同等截面积与厚度下，方形截面比圆形截面缓冲件缓冲效果更好。

Abstract:

In order to reduce the recoil of a new ship-borne launcher，this paper adopts crushed cushions for simulation analysis，in which the crushed material absorbs the recoil of the launcher. The recoil curve is collected by the live ammunition of the ship-borne launcher，and the finite element analysis software LS-DYNA is used to simulate the recoil impact and cushioning process to compare and analyze the cushioning effects of the cushions in different states. The simulation analysis shows that：when the cushion is made of 30×30×20mm cubic aluminum foam material，the peak recoil is 45.58% of the reference peak；when under the same size and specifications，the larger the thickness of the buffer is，the better the absorption and buffering effect is；when under the same thickness， the buffer with a lager cross-sectional area has better energy absorption and buffering effect；when under the same cross-sectional area and thickness，the buffer effect of square section is better than that of circular section.