• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Effects of short fiber tip geometry and inhomogeneous interphase on the stress distribution of rubber matrix sealing composites
【24h】

Effects of short fiber tip geometry and inhomogeneous interphase on the stress distribution of rubber matrix sealing composites

机译：短纤维尖端几何形状和不均匀相间对橡胶基密封复合材料应力分布的影响

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 normal and interfacial shear stress distributions with flat fiber tip of short-fiber-reinforced rubber matrix sealing composites (SFRC) compared with the shear lag model were investigated by using the finite element method (FEM). The results indicate that stress values do not agree with those calculated by the shear lag model. The effect of different geometrical shapes of fiber tip on the stress distributions of SFRC was also investigated. The geometrical shapes of fiber tip under present investigation are flat, semi-elliptical, hemispherical, and circular cone, respectively. The results show that the hemispherical fiber tip transfers the load with less stress concentration and is contributed to controlling the interface debonding failure more effectively than other shapes of fiber tip. Further study on the effect of the inhomogeneous interphase properties on the normal and interfacial shear stresses of hemispherical fiber tip was also conducted. The results indicate that the normal stress increases with the increase of the interphase thickness and interfacial shear stress remains unchanged, and the normal stress values of SFRC with interphase are higher than those without interphase. The interphase elastic modulus has no influence on the stress distributions along the direction to the fiber axis. The stress distributions along the radial direction in the interphase end are largely dependent on the interphase elastic modulus, and the interfacial shear stress is larger than the normal stress, which reveals that a significant part of the external load is transferred from the fiber to the matrix through shear stresses within the interphase. (C) 2014 Wiley Periodicals, Inc.
机译：利用有限元方法（FEM），研究了短纤维增强橡胶基密封复合材料（SFRC）的扁平纤维尖端的正，界面剪切应力分布与剪切滞后模型的关系。结果表明，应力值与剪切滞后模型计算出的值不一致。还研究了纤维尖端的不同几何形状对SFRC应力分布的影响。目前正在研究的纤维尖端的几何形状分别为扁平，半椭圆，半球形和圆锥形。结果表明，与其他形状的光纤头相比，半球形光纤头在应力集中较小的情况下传递载荷，并且有助于更有效地控制界面剥离失败。进一步研究了不均匀的界面性质对半球形纤维尖端的法向和界面剪切应力的影响。结果表明，随着相间厚度的增加，正应力增大，界面剪切应力保持不变，相间SFRC的正应力值高于无相间的SFRC。相间弹性模量对沿纤维轴方向的应力分布没有影响。在相间端沿径向的应力分布很大程度上取决于相间弹性模量，并且界面剪切应力大于法向应力，这表明外力的很大一部分从纤维转移到基体上通过相间的剪切应力。 （C）2014威利期刊公司

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