...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >CTH shock physics simulation of non-linear material effects within an aerospace CFRP fastener assembly due to direct lightning attachment
【24h】

CTH shock physics simulation of non-linear material effects within an aerospace CFRP fastener assembly due to direct lightning attachment

机译：由于直接雷电附着，航空航天CFRP紧固件组件中非线性材料效应的CTH冲击物理模拟

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

This study examines detailed CTH simulation results of a carbon fiber composite panel assembly where the binding titanium fastener joint is the attachment point of a direct lightning strike. A refined COMSOL Multiphysics electromagnetics calculation is performed on the undeformed installed fastener geometry to obtain current and electric field solutions in time using SAE ARP5412B lightning test waveforms. Electro-mechanical coupling is achieved through the use of Joule heating resulting from J.E, the power per unit volume dispersed throughout the structure due to the lightning energy transport. The shock physics code CTH is used to model the fluid-structure calculations which involve highly non-linear and high temperature effects. Experimental data, in the form of material effects images, are used for validation of material and equation of state selections. Discussion of the effects created by the lightning energy depositions focuses primarily on gas conditions in the inner spaces surrounding the fastener and the associated local geometrical changes. The spatiotemporal pressure evolution within the fastener assembly cavities are compared with experimental results and the importance of modeling chemistry changes in future work are discussed within the conclusion.
机译：这项研究检查了碳纤维复合板组件的详细的CTH模拟结果，其中绑定的钛紧固件接头是直接雷击的连接点。使用SAE ARP5412B雷电测试波形，对未变形的已安装紧固件几何形状进行精确的COMSOL Multiphysics电磁计算，以便及时获得电流和电场解。机电耦合是通过使用J.E产生的焦耳热来实现的，由于雷电能量的传输，每单位体积的功率分散在整个结构中。冲击物理代码CTH用于对涉及高度非线性和高温影响的流体结构计算进行建模。材料效果图像形式的实验数据用于验证材料和状态选择方程。关于闪电能量沉积产生的影响的讨论主要集中在紧固件周围内部空间中的气体条件和相关的局部几何变化。将紧固件组件腔内的时空压力演化与实验结果进行了比较，并在结论中讨论了在未来工作中模拟化学变化的重要性。

著录项

  • 来源
    《Composite Structures》 |2018年第4期|357-365|共9页
  • 作者

    Kirchdoerfer T.; Liebscher A.; Ortiz M.;

  • 作者单位

    CALTECH, Grad Aerosp Labs, Pasadena, CA 91125 USA;

    Arcon Fastening Syst & Rings, Pittsburgh, PA USA;

    CALTECH, Grad Aerosp Labs, Pasadena, CA 91125 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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