Study of three-dimensional crack propagation based on numerical manifold method

YANG Shi-kou; ZHANG Ji-xun; REN Xu-hua

doi:10.16285/j.rsm.2017.2529

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Study of three-dimensional crack propagation based on numerical manifold method

更新时间：2026-06-25

- Study of three-dimensional crack propagation based on numerical manifold method
- Vol. 39, Issue S1, Pages: 488-494(2018)
- 作者机构：
  
  1. 河海大学力学与材料学院,江苏,南京,211100
  2. 河海大学水利水电学院,江苏,南京,210098
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.2529
  CLC： O346.1
- Online First：02 September 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
YANG Shi-kou, ZHANG Ji-xun, REN Xu-hua. Study of three-dimensional crack propagation based on numerical manifold method[J]. 2018, 39(S1): 488-494.
DOI：

YANG Shi-kou, ZHANG Ji-xun, REN Xu-hua. Study of three-dimensional crack propagation based on numerical manifold method[J]. 2018, 39(S1): 488-494. DOI： 10.16285/j.rsm.2017.2529.

摘要

基于数值流形法（NMM）进行三维裂纹扩展分析研究，编写了相应的C++程序。充分发挥数值流形法在非连续变形分析领域的优势，不需要扩展有限元中的水平集和阶跃函数概念，应用数值流形法计算结果分析裂纹尖端线的破坏状况，对已有的非局部求迹法和三角形推进法进行简化和扩展，提出一种简化算法确定最终的新裂纹扩展面。应用简化算法对水平钱币型裂纹扩展问题进行数值模拟和对比分析研究。计算结果表明，基于数值流形法的三维裂纹扩展算法是可行的，采用简化处理之后，克服原有算法的不足，大大减少了新裂纹尖端线和新裂纹面的数目，降低了计算网格对新裂纹面的影响，提高了计算效率和扩大了应用范围。

Abstract

The problem of three-dimensional crack propagation is analyzed by the numerical manifold method(NMM) and the corresponding program with C++ is produced. By fully taking advantage of NMM in the area of discontinuous deformation analysis

the concepts of level set(LS) and Heaviside function in the extended finite element method(XFEM) are not required to be used. The result obtained from NMM is used to analyze failure state of each crack tip line. The exiting nonlocal crack tracing method and triangle tracing method are simplified and extended; and then a new tracing method is proposed to determine the final crack face. A block with a horizontal penny-shaped crack under tensile loading is simulated. The results show that the 3D crack propagation simulation based on NMM is feasible. After the simplification and extension

the shortcoming of original algorithm is overcome. The numbers of new crack tip line and new crack face are greatly reduced; and the influence of mesh on new crack surface is reduced; therefore the computational efficiency can be improved and the application can be expanded.

关键词

Keywords

references

Views

222

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Anti-erosion mechanisms of microbially induced calcium carbonate precipitation-vegetation synergistic slope protection

Evaluation of liquefaction flow characteristics and soil state of saturated sand based on tension and compression apparent viscosity

Investigation on thickness selection method of sealing steel plate for CAES gas storage caverns

Progressive fracture evolution and mechanical response of cavity-containing sandstone under low-frequency disturbance

Comparative theoretical and experimental analysis of rock breaking by tunnel boring machine disc cutters

Related Author

No data

Related Institution

No data

AI问答

⁰