• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Materials structure amp; micromechanics of fracture VIII >Stress Intensity Factors for Rough Cracks Loaded in Mode II
【24h】

Stress Intensity Factors for Rough Cracks Loaded in Mode II

机译：模式II中加载的粗糙裂纹的应力强度因子

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

Most fracture mechanical models do not take the materials microstructure into account and use averaged material properties although the real crack flanks and fronts exhibit microstructurally induced tortuous shapes. These influences the stress-strain field at the crack front as well as the related stress intensity factors. This phenomenon was investigated by some authors only for remote mode I loading and was named geometrically induced shielding. This study is focused on the analysis of the stress intensity factors for rough cracks loaded in the shear mode II by modelling the Compact-Tension-Shear (CTS) specimen containing cracks of various roughness. The study revealed that, in accordance with our previous study, already small changes in the crack roughness have a rather high influence on the local field of stress intensity factors. The local stress intensity factor Kn decreases with increasing roughness and, for its higher levels, it converges to a constant value that is significantly lower than that of the remote mode II loading associated with the planar crack of the same length.
机译：尽管实际的裂纹侧面和前沿表现出微观结构引起的弯曲形状，但大多数断裂力学模型并未考虑材料的微观结构，而是使用平均的材料性能。这些都会影响裂纹前沿的应力应变场以及相关的应力强度因子。一些作者仅针对远程模式I加载对这种现象进行了研究，并将其称为几何感应屏蔽。这项研究的重点是通过模拟包含各种粗糙度裂纹的紧凑型张力剪切（CTS）试样，分析在剪切模式II下加载的粗糙裂纹的应力强度因子。该研究表明，根据我们先前的研究，裂纹粗糙度的很小变化对应力强度因子的局部场影响很大。局部应力强度因子Kn随着粗糙度的增加而减小，并且对于较高的水平，它收敛到一个常数值，该值显着低于与相同长度的平面裂纹相关的远程II型载荷的常数。

著录项

  • 来源
  • 会议地点 Brno(CZ)
  • 作者

    Stanislav Zak; Jana Hornikova; Pavel Sandera;

  • 作者单位

    Brno University of Technology, Central European Institute of Technology, Purkyhova 123, 612 00 Brno, Czech Republic;

    Brno University of Technology, Central European Institute of Technology, Purkyhova 123, 612 00 Brno, Czech Republic,Brno University of Technology, Faculty of Mechanical Engineering, Technicka 2, 616 69 Brno, Czech Republic;

    Brno University of Technology, Central European Institute of Technology, Purkyhova 123, 612 00 Brno, Czech Republic,Brno University of Technology, Faculty of Mechanical Engineering, Technicka 2, 616 69 Brno, Czech Republic;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    shear mode; crack tortuosity; stress intensity factors; finite element modeling;

    机译：剪切模式龟裂压力强度因子；有限元建模;

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