| 武燕,孟黎清,周志伟,树学峰*.撞击载荷下Nomex蜂窝夹芯梁的变形模式研究[J].实验力学,2011,26(6):743~749 |
| 撞击载荷下Nomex蜂窝夹芯梁的变形模式研究 |
| Deformation Mode Analysis of Nomex Honeycomb Sandwich Beam Subjected to Impact Loading |
| 投稿时间：2011-01-20 修订日期：2011-05-03 |
| DOI： |
| 中文关键词: 撞击荷载 蒙皮 Nomex蜂窝 夹芯梁 变形 |
| 英文关键词:impact loading face-sheet Nomex honeycomb sandwich beam deformation |
| 基金项目:国家自然科学基金项目（11172195）、山西省国际科技合作项目(2010081016)、山西省回国留学人员科研资助项目(200830)、太原市科技项目(10011607)资助 |
|
| 摘要点击次数: 869 |
| 全文下载次数: 312 |
| 中文摘要: |
| 本文研究了Nomex蜂窝夹芯结构在不同冲量下的变形模式和失效模式。实验采用子弹撞击的加载方式,对Nomex蜂窝夹芯梁施加大小不同的冲量,使用激光位移传感器测量每个试件后蒙皮的变形位移。分析了同芯层厚度,不同蒙皮厚度的Nomex蜂窝夹芯梁在不同冲量作用下抵抗变形的能力,以及冲量大小与蒙皮厚度对夹芯梁抵抗撞击能力的影响,计算分析了蒙皮与芯层的吸能性。实验结果表明：增加蒙皮的厚度能够改善夹芯梁在撞击荷载下抵抗变形的能力,在撞击过程中芯层吸收了50%左右的能量,且冲量越大,芯层吸收的能量越多。 |
| 英文摘要: |
| Study of the deformation mode and the failure mode of Nomex honeycomb sandwich structure subjected to different impulses is presented in this paper. In experiment, projectiles were used to provide different impulses for Nomex honeycomb sandwich beam, and laser displacement sensor was used to measure the back-facesheet deformation displacement of specimens. Effect of the projectile impulse and the facesheet thickness on the resistance to impact was analyzed and the energy absorbing capability of core and facesheet was numerically analyzed based on the experiment data. Experimental results indicate that sandwich beam can effectively improve the ability to resist deformation by increasing facesheet thickness, about 50% energy is absorbed by the core during impact, and more energy is absorbed by the core as impulse increasing. |
| 查看全文 下载PDF阅读器 |
| 关闭 |
|
|
|
|
|
