...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the American Helicopter Society >Efficient Helicopter Skid Landing Gear Dynamic Drop Simulation Using LS-DYNA
【24h】

Efficient Helicopter Skid Landing Gear Dynamic Drop Simulation Using LS-DYNA

机译：使用LS-DYNA的高效直升机滑行起落架动态降落仿真

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Stringent military requirements and design targets underscore the need to develop a robust methodology to analyze the structural behavior of helicopter skid landing gear under dynamic loading conditions. To survive high-energy impacts, the skid landing gear must be designed to provide adequate energy absorption. Bell Helicopter has developed a non-circular crossbeam to optimize design requirements for the skid landing gear. Previous analytical work using MSC.Dytran~(~R) focused on analyzing circular crossbeams and was later extended to analyze rectangular crossbeams with shell element representation. However, excessive computational time precluded the methodology from becoming a viable design tool. This paper focuses on the development of an efficient method for skid landing gear dynamic drop analyses by using a nonlinear hollow rectangular beam element representation. The method, which reduced computational time from 1-2 days to 12 minutes, employs LS-DYNA~(~R) to simulate the response of the skid landing gear for UH-1Y helicopters during hard surface impact. Four standard landing conditions are analyzed and correlated with drop test results.
机译：严格的军事要求和设计目标强调了开发稳健的方法来分析动态载荷条件下直升机滑行起落架的结构性能的需求。为了承受高能量冲击，必须将防滑起落架设计为能够吸收足够的能量。贝尔直升机公司开发了一种非圆形横梁，以优化对防滑起落架的设计要求。以前使用MSC.Dytran〜（〜R）进行的分析工作着重于分析圆形横梁，后来扩展到使用壳单元表示法分析矩形横梁。但是，过多的计算时间使该方法无法成为可行的设计工具。本文致力于通过使用非线性空心矩形梁单元表示法开发一种有效的滑行起落架动态下降分析方法。该方法将计算时间从1-2天减少到12分钟，它使用LS-DYNA〜（〜R）来模拟UH-1Y直升机在硬表面撞击过程中滑落起落架的响应。分析了四个标准着陆条件并将其与跌落测试结果相关联。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号