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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：3D Fracture Development Analysis with A Modified XFEM
XFEM 三维裂缝 发育分析
2023/8/31
扩展有限元法(XFEM)是目前裂纹分析的主流数值方法。2009年起，ABAQUS、ANSYS等主流商业软件集成XFEM并应用于裂纹问题，标志着该方法被工业界广泛接受。然而，在实际应用中XFEM仍然受到两方面的困扰：总体方程高度病态和动力学计算时能量难以守恒。基于“困难的根源在于单位分解插值引入的额外自由度”这一判断和认识，我们提出了一种无额外自由度的改进型扩展有限元方法，有效解决了现有方法总体刚度...
Performance-based fractal fracture model for complex fracture network simulation
Fractal geometry Fractal fracture model Complex fracture network characterization Contributing reservoir volume Refracturing
2017/4/2
The paper presents a novel hydraulic fracturing model for the characterization and simulation of the complex fracture network in shale gas reservoirs. We go beyond the existing method that uses planar...
Over the evolution of fundamental ideas of fracture mechanics
history of mathematics fracture mechanics history of mechanics
2009/2/19
This paper presents three major directions of the evolution of fundamental ideas
of fracture mechanics: experimental methods, numerical methods and analytical
methods, starting with the observation ...
A new approach of fracture mechanics
finite element anisotropic mesh crack numerical methods
2009/2/13
The present paper is a first step towards modelling cracks within the frame of
finite element anisotropic meshes. We will consider 2-dimensional models with
straight cracks. The non-classical FE mod...
A new approach of fracture mechanics
finite element anisotropic mesh crack numerical methods
2009/1/9
The present paper is a first step towards modelling cracks within the frame of
finite element anisotropic meshes. We will consider 2-dimensional models with
straight cracks. The non-classical FE mod...
Over the evolution of fundamental ideas of fracture mechanics
history of mathematics fracture mechanics history of mechanics
2009/1/8
This paper presents three major directions of the evolution of fundamental ideas
of fracture mechanics: experimental methods, numerical methods and analytical
methods, starting with the observation ...