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Element Free Method for Plane Stress Mode I Crack with Couple Stress Effect

机译:具有耦合应力效应的平面应力模式I裂纹的无单元法

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摘要

In order to explain the size effect for materials in the scale of micron meters, the strain gradient theory was developed. There is hard strain gradient which affects the microcosmic crack behavior in the crack tip. The element free Galerkin method (EFGM) has advantages in solving crack problems, requiring no remeshing. However the traditional element free method didn’t consider the influence of couple stress in solving problems. In this paper we calculate the crack with EFGM based on the couple stress theory, and analyze the influence of couple stress on the stress field in crack tip. The result shows the feasibility and efficiency of the method.
机译:为了解释微米级材料的尺寸效应,建立了应变梯度理论。硬应变梯度会影响裂纹尖端的微观裂纹行为。无元素Galerkin方法(EFGM)在解决裂纹问题方面具有优势,无需重新网格化。但是,传统的无元素方法没有考虑耦合压力在解决问题中的影响。本文基于偶合应力理论,利用EFGM计算裂纹,分析了偶合应力对裂纹尖端应力场的影响。结果表明了该方法的可行性和有效性。

著录项

  • 来源
    《Computational Mechanics》|2007年|1-6|共6页
  • 会议地点 Beijing(CN)
  • 作者单位

    Minghui Hao@School of Civil Engineering,Shandong University,Jinan,250061 China--Hai Wu@School of Civil Engineering,Shandong University,Jinan,250061 China--Xiping Wang@School of Civil Engineering,Shandong University,Jinan,250061 China--Shenjie Zhou@School of Mechanical Engineering,Shandong University,Jinan,250061 China--;

  • 会议组织
  • 原文格式 PDF
  • 正文语种
  • 中图分类 应用力学;
  • 关键词

    size effect; strain gradient; EFGM; couple-stress;

    机译:尺寸效应应变梯度EFGM耦合应力;

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