• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >Progressive damage and failure strength of notched woven fabric composites under axial loading with varying strain rates
【24h】

Progressive damage and failure strength of notched woven fabric composites under axial loading with varying strain rates

机译：有缺口的机织复合材料在轴向载荷下应变速率变化时的渐进式破坏和破坏强度

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 investigated the failure of notched and un-notched plain weave composite specimens subjected to varying strain rate loading. Different strain rate axial loads were applied to observe the rate effect on the failure. Both uniform and non-uniform strain rate loads were applied to the notched and un-notched composite specimens, respectively. Notched specimens showed initial cracks at the edge of the hole before final fracture. The initial crack under tensile loading became smaller as the strain rate increased. The initial crack length was predicted using the finite element analysis of the non-homogeneous, micromechanics-based model. The predicted length agreed well with the experimental measurement. Application of the initial crack size for the characteristic distance of the Average Stress failure criterion yielded acceptable tensile notch strengths. The compressive notch strength was less sensitive to the tensile notch strength. The non-constant, varying strain rate loading showed that the failure strength and stiffness depend on the history of the applied loading rates. The effects of the varying strain rates on both notched and un-notched specimens were different qualitatively. However, the strength ratios of the notched to un-notched specimens under varying rates were greater than those under constant rates regardless of tensile or compressive loading. Published by Elsevier Ltd.
机译：这项研究调查了开槽和未开槽的平纹编织复合材料试样在不同应变速率下的破坏情况。施加不同的应变速率轴向载荷以观察速率速率对破坏的影响。均一和不均一的应变率载荷分别施加到有缺口和无缺口的复合材料试样上。缺口试样在最终断裂之前在孔的边缘显示出初始裂纹。随着应变率的增加，拉伸载荷下的初始裂纹变小。使用非均质的，基于微力学的模型的有限元分析来预测初始裂纹长度。预测的长度与实验测量值非常吻合。将初始裂纹尺寸应用于平均应力破坏准则的特征距离可以产生可接受的拉伸缺口强度。压缩缺口强度对拉伸缺口强度较不敏感。非恒定，变化的应变率载荷表明，破坏强度和刚度取决于所施加载荷率的历史。应变速率对有缺口和无缺口试样的影响在质量上是不同的。但是，无论拉伸或压缩载荷如何，在变化速率下带缺口试样与无缺口试样的强度比要大于恒定速率下的强度比。由Elsevier Ltd.发布

著录项

  • 来源
    《Composite Structures》 |2013年第2期|824-832|共9页
  • 作者

    Y.K. Boey; Y.W. Kwon;

  • 作者单位

    Dept. of Mechanical & Aerospace Engineering, Naval Postgraduate School, Monterey, CA 93940, USA;

    Dept. of Mechanical & Aerospace Engineering, Naval Postgraduate School, Monterey, CA 93940, 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

    damage and failure; varying strain rate; woven fabric composite;

    机译：损坏和故障;变化的应变率;机织复合面料;

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