| 刘波,程祥利*,杨荷,叶海福,焦敏,韩萌萌.基于Hopkinson杆的加速度传感器测试系统仿真与测试研究[J].实验力学,2019,34(6):1027~1034 |
| 基于Hopkinson杆的加速度传感器测试系统仿真与测试研究 |
| Simulation and testing of dynamic loading system for accelerometer based on Hopkinson bar |
| 投稿时间：2018-03-22 修订日期：2018-07-28 |
| DOI：10.7520/1001-4888-18-054 |
| 中文关键词: Hopkinson杆 加速度传感器 动态加载 整形垫 子弹形状 |
| 英文关键词:Hopkinson bar accelerometer dynamic loading pulse shaper projectile shape |
| 基金项目:中国工程物理研究院电子工程研究所科技创新基金项目(S20161102)、电子安全系统抗高过载技术(41419040102)、XXX战斗部用引信技术(995-14021006010101)、中国工程物理研究院重点课题(TCGH503) |
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| 中文摘要: |
| 针对加速度传感器的Hopkinson杆动态试验装置，采用有限元工具对Hopkinson杆测试系统进行了仿真研究。仿真结果说明整形垫的加入和入射子弹形状的改变提高了应力历史的上升时间和加速度历史的脉宽。动态加载的试验测试与仿真结果表明：当由平头子弹改为尖头子弹并添加铝制整形垫后，入射杆应力脉冲持续时间与对加速度传感器加载的加速度冲击均得到了大幅提升。Hopkinson杆动态测试系统的测试与仿真研究为传感器的冲击试验设计奠定了基础。 |
| 英文摘要: |
| Numerical study on the measurement system is carried out via the finite element method (FEM) for the accelerometer's dynamic loading device based on Hopkinson bar. The simulation results show that the rise-time of the strain history and the duration of the acceleration history can be increased by introducing the aluminous pulse shaper and the cuspate projectile. The comparison between the dynamic loading test and the simulated results shows that the duration of the incident bar stress pulse and the acceleration impact applied on the accelerometer can be increased sharply when the projectile is changed from blunt to cuspate and the pulse shaper is added. The present study would establish some foundation for the design of the impact test for the accelerometer. |
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