• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>3rd Asia-Pacific international conference on computational methods in engineering >Responses of Cylindrical Shell Loaded by Explosive Rods to Simulate X-ray Effects: Numerical Simulation and Fidelity Analysis
【24h】

Responses of Cylindrical Shell Loaded by Explosive Rods to Simulate X-ray Effects: Numerical Simulation and Fidelity Analysis

机译：爆炸杆加载的圆柱壳对X射线效果的响应：数值模拟和保真度分析

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

Responses of reentry structures subjected to X-ray blow-off impulses in hostile environments are significantly important for weapon design and validation. Without actual radiation environments, some test simulation techniques are used to generate equivalent or similar loads in laboratory. This paper focuses on test simulation using explosive rods and its fidelity. Firstly, the prior fast method for continuously distributed loads was modified to calculate responses to naturally discretized loads generated by explosive rods. Then the proposed method is validated using a simple example. Finally, a number of numerical simulations were performed. The influences of three factors on the fidelity of test simulation were investigated, including the number of explosive rods, non-simultaneity of loading-rod initiation and detonation failure of a single rod. The results show that, for Φ300mm cylindrical shell, the relative errors of peak stress keep less than 20% if the number of explosive rods reaches 15, less than 8% under 14μs non-simultaneity and less than 12% when a single rod fails to be initiated.u0000r
机译：在恶劣环境中，再入结构受到X射线吹散脉冲的响应对于武器设计和验证非常重要。在没有实际辐射环境的情况下，一些测试模拟技术用于在实验室中产生等效或相似的负载。本文着重于使用爆炸棒及其保真度的测试模拟。首先，修改了先前用于连续分布载荷的快速方法，以计算对爆炸杆产生的自然离散载荷的响应。然后用一个简单的例子对提出的方法进行验证。最后，进行了许多数值模拟。研究了三个因素对试验模拟逼真度的影响，包括爆炸杆的数量，加载杆起爆的非同时性和单个杆的爆轰失败。结果表明，对于Φ300mm圆柱壳，爆炸杆数达到15时，峰值应力的相对误差保持在20％以内；在14μs非同时爆炸条件下，峰值应力的相对误差保持在8％以下；单杆破坏不达到14％时，峰值应力的相对误差在12％以下被启动。

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