ansys工程分析(參考版)
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【正文】 Chapter 4 ANSYS結(jié)構(gòu)分析的基本觀念 Basic Concepts for ANSYS Structural Analysis Contents 學(xué)科領(lǐng)域與元素類(lèi)別 Disciplines and Element Types 分析類(lèi)別 Analysis Types 線性分析與非線性分析 Linear Analysis and Nonlinear Analysis 材料模式 Material Models 材料的破壞準(zhǔn)則 Failure Criteria of Materials 實(shí)例 : 動(dòng)態(tài)分析 Example: Dynamic Analysis 實(shí)例 : 非線性分析 Example: Nonlinear Analysis 練習(xí)題 : 幾何非線性 Exercise: Geometric Nonlinearity 2 第 學(xué)科領(lǐng)域與元素類(lèi)別 Disciplines and Element Types 3 學(xué)科領(lǐng)域 ? 結(jié)構(gòu)分析 Structural Analysis ? 熱傳分析 Thermal Analysis ? 流場(chǎng)分析 Fluid Dynamic Analysis ? 電場(chǎng)分析 Electric Field Analysis ? 磁場(chǎng)分析 Magic Field Analysis ? 耦合場(chǎng)分析 Coupledfield Analysis 4 耦合場(chǎng)分析 ? Example 1: Thermal Stress Analysis ? Example 2: StructureFluid Interactions ? Example 3: Thermal Actuator 5 元素類(lèi)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 thermalelectric element 6 第 分析類(lèi)別 Analysis Types 7 分析類(lèi)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 – Steadystate, Transient ? Electric Field Analysis – Static, Transient, Modal, Harmonic ? etc. 8 暫態(tài)分析 Transient Analysis ? Inertia forces ? Damping forces ? Elastic forces ? External forces FKDDCDM ??? ???9 靜態(tài)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: – Steadystate solution – approximation solution for a realworld problem. FKD ?10 模態(tài)分析 Modal Analysis ? Modal analysis is to analysis a structure under free vibration. ? The solutions typically include – Vibration frequencies (or periods) – Vibration modes 0KDDCDM ??? ???11 諧和反應(yīng)分析 Harmonic Response Analysis ? Harmonic response analysis is to analysis a structure under periodic excitation of external forces.
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