某离心通风机叶轮的ANSYS建模与应力分析

2015 届毕业设计论文

题目 9-19型某离心通风机叶轮的ANSYS建模与应力分析专业班级

学号

学生

指导老师黄忠文

指导老师职称副教授

学院名称机电工程学院

完成日期：2015年6月11日

9-19某型离心通风机叶轮的ANSYS建模与应力分析

ANSYS modeling and stress analysis of

9-19centrifuge fan impeller

学生

指导老师黄忠文

摘要

风机在各个行业的应用十分广泛，几乎涉及到国家发展生产的所有领域，而叶轮则是风机的关键部件。整个风机的运作过程则是通过叶轮的机械转动，形成气压差，引起气流的定向流动，从而达到通风的效果。由于风机应用广泛工作环境千变万化，对风机主要是叶轮的要求就进一步增强了。一个合格的叶轮必须具有良好的综合性能，本文则尝试对9-19型某离心通风机叶轮的ANSYS建模与应力分析。

为了便于对离心通风机叶轮进行结构静力分析，进而对1-19型某离心通风机结构进行了合理的研讨，适当优化，本文建立了一个简单，合理，有效的叶轮有限元分析模型，对于离心机叶轮而言，真是结构相当复杂，本文中对各部件做了合理的简化，确定了叶轮的结构尺寸及各部分的材料常数，并应用于整体模型的建立中。

建立有限元模形式时，有限单元的选择非常重要，合式的单元不仅使建模，计算方便，而且能够更加真实的模拟结构的受力，变形情况，本文侧重对叶轮的建模与有限元分析，对模型进行了合理的简化，如螺栓省略了，模型一体化以及不计重力对叶轮的影响。

关键词：离心通风机叶轮ANSYS有限元

Abstract

Fans are widely used in various industries, almost involves all areas of the national development and production, and the impeller is the key components of the fan.The whole operation process of the fan is through the rotation of the mechanical impeller, formation pressure difference, cause the directional flow of air flow, so as to achieve the effect of ventilation.Widely used because of the fan working environment, requirements for fan is mainly the impeller is further enhanced.A qualified impeller must have good comprehensive performance, this paper try to 9-19 ANSYS modeling and stress analysis of a centrifugal fan impeller.

In order to carry out structural static analysis of centrifugal fan impeller, and a centrifugal fan in type 1-19 structure has carried on the rational discussion, appropriate optimization, this paper set up a simple, reasonable and effective finite element analysis model of impeller for the centrifugal impeller, it's structure is quite complicated, this article made a reasonable simplification, the components to determine the structure of the impeller size and material constant of each part, and applied to setting up the model of the whole.

Establishing finite element model form, the choice of the finite element is very important, shaped unit not only make the modeling and calculation

is convenient, but also more realistic simulation of the structure of the stress, deformation, this paper focuses on the modeling and finite element analysis of the impeller, to the reasonable simplified model, such as bolt is omitted, model integration, and regardless of the gravity effect on the impeller.

Key words ：Centrifugal fan Impeller ANSYS Filet element

目录

摘要 (1)

Abstract (2)

目录 (4)

第一章绪论 (7)

1.1课题背景 (7)

1.1.1行业现状 (7)

1.1.2课题研究的意义 (8)

第二章关于风机 (9)

2.1 风机的应用 (9)

2.2风机的构造与分类 (10)

2.3 离心机的工作过程 (11)

第三章 9-19型离心通风机的三维图与平面图 (12)

3.1 9-19型离心通风机平面图 (12)

3.2 1-19型离心通风机叶轮三维图 (13)

第四章 9-19型某离心通风机叶轮的建模 (15)

4.1 绘制上圆盘 (15)

4.1.1 创建草图 (15)

4.1.2 绘制草图 (15)

4.1.3 旋转成体 (16)

4.2绘制下圆盘 (16)