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扩展有限元法:理论与应用:theory and applications

扩展有限元法:理论与应用:theory and applications

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  • ISBN:9787561264331
  • 装帧:一般胶版纸
  • 册数:暂无
  • 重量:暂无
  • 开本:24cm
  • 页数:18,565页
  • 出版时间:2019-03-01
  • 条形码:9787561264331 ; 978-7-5612-6433-1

内容简介

有限元法(FEM)是目前求解偏微分方程 的方法之一,被广泛应用到航空与航天工程、汽车工业、机械工程、土木工程,生物力学、材料科学、地质力学等领域。扩展有限元法(XFEM)的出现克服了FEM一些缺点使得可以在有限单元内引入任意的非连续性,本教材的目的是将XFEM在求解连续介质以及结构的线性与非线性问题时的理论与应用展现给 多的读者。

目录

Series Preface Preface 1 Introduction 1.1 Introduction 1.2 An Enriched Finite Element Method 1.3 A Review on X-FEM: Development and Applications 1.3.1 Coupling X-FEM with the Level-Set Method 1.3.2 Linear Elastic Fracture Mechanics (LEFM) 1.3.3 Cohesive Fracture Mechanics 1.3.4 Composite Materials and Material Inhomogeneities 1.3.5 Plasticity, Damage, and Fatigue Problems 1.3.6 Shear Band Localization 1.3.7 Fluid-Structure Interaction 1.3.8 Fluid Flow in Fractured Porous Media 1.3.9 Fluid Flow and Fluid Mechanics Problems 1.3.10 Phase Transition and Solidification 1.3.11 Thermal and Thermo-Mechanical Problems 1.3.12 Plates and Shells 1.3.13 Contact Problems 1.3.14 Topology Optimization 1.3.15 Piezoelectric and Magneto-Electroelastic Problems 1.3.16 Multi-Scale Modeling 2 Extended Finite Element Formulation 2.1 Introduction 2.2 The Partition of Unity Finite Element Method 2.3 The Enrichment of Approximation Space 2.3.1 Intrinsic Enrichment 2.3.2 Extrinsic Enrichment 2.4 The Basis of X-FEM Approximation 2.4.1 The Signed Distance Function 2.4.2 The Heaviside Function 2.5 Blending Elements 2.6 Governing Equation of a Body with Discontinuity 2.6.1 The Divergence Theorem for Discontinuous Problems 2.6.2 The Weak form of Governing Equation 2.7 The X-FEM Discretization of Governing Equation 2.7.1 Numerical Implementation of X-FEM Formulation 2. 7.2 Numerical Integration Algorithm 2.8 Application of X-FEM in Weak and Strong Discontinuities 2.8.1 Modeling an Elastic Bar with a Strong Discontinuity 2.8.2 Modeling an Elastic Bar with a Weak Discontinuity 2.8.3 Modeling an Elastic Plate with a Crack Interface at its Center 2.8.4 Modeling an Elastic Plate with a Material Interface at its Center 2.9 Higher Order X-FEM 2.10 Implementation of X-FEM with Higher Order Elements 2.10.1 Higher Order X-FEM Modeling of a Plate with a Material Interface 2.10.2 Higher Order X-FEM Modeling of a Plate with a Curved Crack Interface 3 Enrichment Elements 3.1 Introduction 3.2 Tracking Moving Boundaries
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