...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Composite Materials >Biaxial tensile-compressive loading of unnotched and open-hole carbon epoxy crossply laminates
【24h】

Biaxial tensile-compressive loading of unnotched and open-hole carbon epoxy crossply laminates

机译：无缺口和开孔碳环氧交叠层压板的双轴拉伸-压缩载荷

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

Although most tests on composites are conducted uniaxially, they are subjected to multi-axial loads in real-life applications. In this paper, the behavior of unnotched and open-hole unidirectional carbon epoxy crossply laminates under various off-axis biaxial tension-compression loadings is studied using a mixed experimental and numerical approach. Strain measurements made using digital image correlation technique in cruciform test specimens show overall good correlation with finite element predictions based on the micromechanics of failure theory and material property degradation method. It is shown that an aligned mesh concept where element edges are aligned with ply fiber direction is necessary for accurate prediction of progressive failure patterns. The finite element model is shown to be capable of predicting critical and sub-critical damage mechanisms governing failure in these laminates. Furthermore, the detrimental effect of off-axis loading and the introduction of an open-hole in carbon epoxy crossply laminates under the biaxial loading are investigated quantitatively.
机译：尽管大多数对复合材料的测试都是单轴进行的，但在实际应用中它们会承受多轴载荷。本文采用混合实验和数值方法研究了无缺口和开孔单向碳环氧交联层压板在各种离轴双轴拉伸-压缩载荷下的行为。使用数字图像相关技术在十字形试样中进行的应变测量显示出与基于破坏理论的微力学和材料特性退化方法的有限元预测总体上具有良好的相关性。结果表明，对于单元格边缘与帘布层纤维方向对齐的对齐网格概念，对于精确预测渐进式破坏模式是必要的。有限元模型显示出能够预测控制这些层压板破坏的关键和次临界损伤机制。此外，定量研究了双轴载荷下轴心载荷的不利影响以及碳环氧交联层压板中开孔的引入。

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