Improved xfem

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August undefined, 2024

WitrynaAn improved XFEM (IXFEM) for three-dimensional linear elastic fracture mechanics (LEFM) problems is developed. It utilizes an extra-dof free PU approximation to fundamentally overcome the linear... Witryna10 kwi 2015 · The XFEM was initially proposed to tackle the strong-discontinuity problem in relation to crack growth and was soon extended to other problems characterized by localization, complex geometries and multi-phase. The method has two main advantages over other numerical methods.

An Improved XFEM With Multiple High-Order Enrichment …

Witryna本文采用xfem对不同断面形式的隧洞衬砌进行计算分析,模拟衬砌裂缝的萌生及扩展过程,得到一些裂缝扩展的规律,展示出xfem研究开裂问题的可行性及其独特的优越性。 1 不同断面形状的衬砌结构分析. 1.1 工程概况 Witryna10 kwi 2024 · XFEM including fracture mechanics, large deformation, plasticity, multiphase ﬂow, hydraulic fracturing ... FEM (POUFEM) Features improved pedagogy, including the addition of more design-oriented and practical examples and problems Covers real-life applications, sample review questions at the end of most birds with large tail feathers

Materials Free Full-Text Investigation on Indentation Cracking ...

WitrynaBased on the idea of the extended finite element method (XFEM), a new enriched displacement function, the exponent discontinuous function is presented to simulate the discontinuous character resulted from discontinuity such as crack, interface or joint. Witryna8 kwi 2024 · 而因子;②以 XFEM 仿真结果为训练数据,以裂纹起大多数结构的裂纹尖端应力场分布较为复杂,应力始位置和长度为输入,构建以应力强度因子为输出强度因子受裂纹尺寸和起始位置的影响较大,应力的反向传播人工神经网络( back propagation artificial 强度因子的解析 ... Witrynathe enrichment function is modiﬁed, the proposed Is-XFEM, together with appropriate … dance for his glory woodstock ga

Well-conditioning global–local analysis using stable ... - Springer

Witryna30 sty 2024 · 相较于常规扩展有限元法 (extended finite element method, XFEM), 改进型扩展有限元法 (improved XFEM) 解决了现有方法线性相关与总体刚度矩阵高度病态问题, 在数量级上提升了总体方程的求解效率, 克服了现有方法在动力学问题中的能量正确传递、动态应力强度因子数值震荡、精度低下问题. 本文基于改进型XFEM, 采用Newmark 隐 … WitrynaAnswers for improvement, enhancement crossword clue, 10 letters. Search for … birds with long beaks ukWitrynaAn improved stable XFEM (Is-XFEM) with a novel enrichment function for the … birds with large bills

"Witryna25 maj 2024 · In this paper, the improved extended finite element method (XFEM) for analyzing the three-dimensional (3D) electric field is presented. The interface between two media is described by using a four-dimensional (4D) level set function. For elements with multiple interfaces, the local level set method is used to improve the accuracy. By … " - Improved xfem

Improved xfem

Witryna30 wrz 2024 · Jena et al. accurately captured the singularity at the crack tip during semipermeable crack propagation using XFEM. Xiao et al. proposed a B-spline ruled surface algorithm, which was applied to modeling arbitrary 3D crack propagation in the context of the improved XFEM. It had been proved to possess both efficiency and … WitrynaThis paper proposes an improved extended finite element method for modeling electromagnetic devices with multiple nearby geometrical interfaces. In regions near these interfaces, the magnetic vector potential approximation is enriched by incorporating multiple derivative discontinuous fields based on the partition of unity method such …

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WitrynaImproved XFEM: algorithms, software and applications Rong Tian, Longfei Wen … Witryna15 sie 2016 · Based on an extra-dof-free partition of unity enrichment technique (Tian, …

Witryna1 sty 2024 · An improved XFEM (IXFEM) for three-dimensional linear elastic fracture … Witryna1 mar 2015 · An improved XFEM (i XFEM) is developed to overcome those difficulties …

Witryna9 paź 2024 · Improved nonlinear model of a yaw damper for simulating the dynamics of a high-speed train. Restricted access Research article First published October 9, ... Analysis of the initiation and propagation of fatigue cracks in the CRTS II slab track inter-layer using FE-SAFE and XFEM. Restricted access Research article First published … Witryna27 lip 2016 · The SG/XFEM is aiming to improve the conditioning property of the G/XFEM. Another advantage is that the SG/XFEM does not use ramp-functions in the transitory elements between regions of different kinds of …

Witryna1 mar 2015 · An improved XFEM (i XFEM) is developed to overcome those difficulties …

WitrynaImproved XFEM: algorithms, software and applications Rong Tian, Longfei Wen Software center for high performance numerical simulation, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China Abstract. The extended finite element method (XFEM) [1-3] is widely accepted in academy birds with long feather tailWitrynaThe improved XFEM magnetic vector potential approximation can be expressed by . N NNu x x u x x x a h i i j k k j k i I k jJ ek \M ¦ ¦ ¦ (1 ) where u i and a j are nodal unknowns, N i (x) and N j (x) the finite element shape functions, ψ(x) is the enrichment function, which contains the desirable discontinuous properties, and Je birds with long blue tailsWitrynaxFEM方法[7￣9]贝0利用有限元形函数构造出求解域上的一组单位分解函数，将节点相邻单元组成的节点影响域看作一组覆盖，通过在每个覆盖上定义位移模式，相应的全域的位移近似描述可以写为 ‰p（x）＝∑％（x）∑乃p，（x） birds with long billsWitryna15 sie 2016 · An improved XFEM (IXFEM) for three-dimensional non-planar crack … birds with long beaks in njWitryna3 wrz 2024 · The modified XFEM, a specific form of the stable generalised finite … dance for dignityWitrynaFor the purpose of this research, an extended finite element method (XFEM) code is developed to simulate fracture propagation, initiation and intersection. The motivation behind applying XFEM are the desire to avoid remeshing in each step of the fracture propagation, being able to consider arbitrary varying geometry of natural fractures and … dance for joy nyWitrynaCombining the main advantages of the extended finite element methods (XFEM) and the scaled boundary finite element methods (SBFEM), improved extended scaled boundary finite element methods ($i$XSBFEM) are proposed. The proposed methods can provide a new way for the simulation of fracture problems. dance for christ 2018