ANSYS双层金属机匣包容能力数值分析
关键词 航空发动机 双层金属机匣 叶片 包容性 数值模拟
毕业论文设计说明书（论文）外文摘要
Title Numerical Analysis of Containment Ability
on the Double-layer Metallic Casing
Abstract
Based on worldwide experiment research and numerical analysis research of containment on aeroengine casing in decades，this graduation project would carry on a investigation in containment of double-layer metallic casing. This paper discussed the background of the research program, the introduction of the ANSYS/LS-DYNA software, the specific research method and the consequence of the computational simulation. This project researched specific on the effect on containment of changing casing thickness, different thickness allocation and distance between double-layer casing .Relying on this, this paper gave casing’s optimum design basing on initial model and concluded practicality theory on engineering casing design.
Keywords aeroengine double-layer metallic casing
blade containment numerical analysis
目 次
1 引言 1
1.1 叶片包容性问题的背景介绍 1
1.2 国内外研究成果 1
1.3 ANSYS/LS-DYNA软件介绍 2
1.4 本课题研究的问题及拟采用的方法 3
2 双层金属机匣模型的建模 6
2.1 前处理 6
2.2 求解控制 11
2.3 后处理 15
3 机匣厚度增减时双层机匣的包容性分析 16
3.1 两种厚度下叶片变形和机匣变形的对比 16
3.2 两种厚度下应力云图和位移云图的对比 18
3.3 两种厚度下叶片和机匣能量的对比 21
3.4 两种厚度下叶片上一点的速度对比 24
3.5 小结 25
4 机匣厚度分配不同时双层机匣的包容性分析 26
4.1 四种机匣厚度分配下叶片变形和机匣变形的对比 26
4.2 四种机匣厚度分配下应力云图和位移云图的对比 30
4.3 四种机匣厚度分配下内外层机匣内能的对比 34
4.4 小结 37
5 机匣间距不同时双层机匣的包容性分析 38
5.1 四种机匣间距下叶片变形和机匣变形的对比 38
5.2 四种机匣间距下应力云图和位移云图对比 42
5.3 四种机匣间距下内外层机匣的内能对比 47
5.4 小结 49
结 论 51