ANSYS工程分析.pptVIP

ANSYS工程分析 Chapter 4 ANSYS結構分析的基本觀念 Basic Concepts for ANSYS Structural Analysis Contents 4.1 學科領域與元素類別 Disciplines and Element Types 4.2 分析類別 Analysis Types 4.3 線性分析與非線性分析 Linear Analysis and Nonlinear Analysis 4.4 材料模式 Material Models 4.5 材料的破壞準則 Failure Criteria of Materials 4.6 實例: 動態分析 Example: Dynamic Analysis 4.7 實例: 非線性分析 Example: Nonlinear Analysis 4.8 練習題: 幾何非線性 Exercise: Geometric Nonlinearity 第4.1節 學科領域與元素類別 Disciplines and Element Types 4.1.1 學科領域 結構分析 Structural Analysis 熱傳分析 Thermal Analysis 流場分析 Fluid Dynamic Analysis 電場分析 Electric Field Analysis 磁場分析 Magnetic Field Analysis 耦合場分析 Coupled-field Analysis 4.1.2 耦合場分析 Example 1: Thermal Stress Analysis Example 2: Structure-Fluid Interactions Example 3: Thermal Actuator 4.1.3 元素類別Element Types ANSYS elements are classified according to Discipline Dimensionality Geometry Order Example SOLID45: 3D hexahedral linear structural element PLANE67: 2D quadralateral linear coupled thermal-electric element 第4.2節 分析類別 Analysis Types 4.2.1 分析類別Analysis Types Static Analysis Dynamic Analysis Transient Analysis Modal Analysis Harmonic Response Analysis etc. Buckling Analysis Structural Analysis Static, Transient, Modal, Harmonic, Buckling, etc. Thermal Analysis Steady-state, Transient Electric Field Analysis Static, Transient, Modal, Harmonic etc. 4.2.2 暫態分析Transient Analysis Inertia forces Damping forces Elastic forces External forces 4.2.3 靜態分析Static Analysis When dynamic effects can be neglected, a problem can be solved statically. Dynamic effects can be neglected only when the deformation velocity and acceleration are small. Two cases: Steady-state solution approximation solution for a real-world problem. 4.2.4 模態分析Modal Analysis Modal analysis is to analysis a structure under free vibration. The solutions typically include Vibration frequencies (or periods) Vibration modes 4.2.5 諧和反應分析Harmonic Response Analysis Harmonic response analysis is to analysis a structure under periodic