Review of pyroshock wave measurement and simulation for space systems
Review of pyroshock wave measurement and simulation for space systems
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DOI：
10.1016/j.measurement.2011.12.011
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发表时间：
2012-05
期刊：
影响因子：
5.6
通讯作者：
Jung‐Ryul Lee;C. Chia;C. Kong
中科院分区：
文献类型：
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作者：
Jung‐Ryul Lee;C. Chia;C. Kong
在航空航天器中使用了许多烟火装置来完成起爆、释放、切断/断裂、投弃、阀门、切换、延时和启动过程。这些装置的启动会产生严重的冲击，在许多设备规范中，这是一种潜在的破坏性环境。这种强烈的冲击被称为热震，其特征是瞬时高加速度和高频率。由于高温冲击会导致电子元件失效，许多研究人员试图开发一种有效的方法来分析冲击波的产生和传播。地面试验中冲击波的模拟和特性鉴定对于确保这一阶段设备的完整性是必要的。我们回顾了热震的测量和表征，各种实验模拟的要求，激励和测量技术，数据采集，以及数值模拟的概述。
Numerous pyrotechnic devices are used in aerospace vehicles to accomplish initiation, release, severance/fracture, jettison, valving, switching, time delay, and actuation process. The initiation of these devices generates severe shock, which has been overlooked as a potentially damaging environment in many equipment specifications. This severe shock is referred to as pyroshock which is characterized by transient high acceleration and high frequencies. Since pyroshock can cause the failure of electronic components, many researchers have attempted to develop an effective method to analyze the generation and propagation of shock waves. The simulation and characterization of shock waves in ground tests are necessary to ensure equipment integrity in this phase. We review the measurement and characterization of pyroshock, requirements for various experimental simulations, excitation and measurement techniques, data acquisition, and an overview of numerical simulation.