• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Proceedings of the American Society for Composites Twenty-Ninth technical conference, Proceedings of the 16th US-JAPAN conference on composite materials ASTM-D30 meeting >Modeling and Simulation of Impact and Perforation in Fiber Reinforced Composites
【24h】

Modeling and Simulation of Impact and Perforation in Fiber Reinforced Composites

机译：纤维增强复合材料冲击和穿孔的建模与仿真

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

The use of fiber reinforced polymer composites (FRPs) in aircrafts and vehiclesrnenhances their fuel efficiency and reduces maintenance costs. Understanding thernperformance of FRPs under impact loadings is crucial in the design of such structures.rnThis problem, however, has not been well studied due to its very complex nature.rnMaterial models used in impact simulations should account for various failure modes,rnrate-dependent behavior, and progressive damage of fibers, matrix and fiber-matrixrninterfaces. This study attempts to simulate transverse impact (100 ms-1) of a sphericalrnimpactor with a thin FRP plate using explicit LS-DYNA FEM package. The MAT162rnmaterial model of LS-DYNA is utilized for modeling the composite response. Thisrnmodel accounts for the strain rate dependent behavior and progressive damage inrncomposite. Input parameters to the MAT162 are either measured directly fromrncommon mechanical tests or calibrated indirectly using quasi-static shear punch testsrn(QSSPTs). Results of numerical simulations are compared to the impact experimentsrnperformed on FRPs. Response of the FRPs is discussed in terms of variations inrnimpact absorbed energy as a function of different material model parameters. Thisrnstudy elucidates, for the first time, the FEM simulation of a thin carbon fiberrnreinforced polymer composite (CFRP) using the MAT162.rnThis research paper is, therefore, intended to serve as an outline for researchesrninterested in using MAT162 of LS-DYNA to model impact in FRPs.
机译：在飞机和车辆中使用纤维增强聚合物复合材料（FRP）可以提高其燃油效率并降低维护成本。了解FRP在冲击载荷下的性能对于此类结构的设计至关重要。然而，由于其非常复杂的性质，尚未对此问题进行充分的研究。冲击仿真中使用的材料模型应考虑各种破坏模式，与速率有关的行为以及纤维，基质和纤维-基质界面的渐进性损伤。这项研究试图使用显式LS-DYNA FEM封装来模拟具有薄FRP板的球形冲击器的横向冲击（100 ms-1）。 LS-DYNA的MAT162材料模型被用来模拟复合响应。该模型说明了应变率相关行为和复合材料进行性损伤。 MAT162的输入参数可以通过普通的机械测试直接测量，也可以使用准静态剪切冲压测试（QSSPTs）间接校准。将数值模拟的结果与在玻璃钢上进行的冲击实验进行了比较。 FRP的响应是根据不同材料模型参数的影响吸收能量的变化来讨论的。这项研究首次阐明了使用MAT162对薄碳纤维增强聚合物复合材料（CFRP）进行的有限元模拟。因此，本研究旨在为有兴趣使用LS-DYNA的MAT162进行冲击建模的研究提纲。在玻璃钢中。

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