工程车上刮板分总成有限元建模及静动态特性分析

论文总字数：26106字

摘 要

对上刮板进行静动态分析，不仅能考察上刮板结构的整体刚度特性，而且可以指导人们对上刮板结构进行优化以及响应分析。本文基于有限元和静动态理论，运用SolidWorks、HyperMesh软件进行三维建模，利用ANSYS软件对上刮板模型进行了静态分析、模态分析。

采用三维造型软件SolidWorks建立上刮板的各个子部件并且通过转换文件格式输入HyperMesh 软件中。在能够反映上刮板结构的主要静动特性的基础上，对上刮板进行了必要的简化。进行了几何前处理之后，在分析了单元数量、质量、布局的前提下，对整个上刮板结构进行了网格划分，建立了详细上刮板有限元模型。同时设定了材料以及每一个子部件的参数包括厚度密度等等。

随后在ANSYS软件里对上刮板典型的三种工况进行了模拟，进行了静态分析以及在自由状态以及受约束的工况下进行了模态分析，并分别进行了计算，对上刮板结构振动特性进行了评价。

关键词：上刮板；有限元；建模；静态；模态

Finite-Element modeling and staticamp;dynamic characteristics analysis for the Compactor Board of the Waste Truck

02009416 Chen JiChao

Supervised by Zhu ZhuangRui

Abstract：As people's living standards are improving, people increasing the amount of waste generated. Therefore, with compression and crushing function after loading compression garbage truck increasingly widely welcomed by the environmental protection department. With the increasing levels of sanitation, the Waste trucks’ demand is increasing year by year. The compactor board is an important component of garbage truck. In the packing process, it is the core working parts. In the driven by hydraulic cylinders, it and the lower compactor board cooperate with each other, specifically complete filling the waste. In the work process, it is affected by complex cyclic alternating loads, and also is likely to be structurally damaged.

The static and dynamic analysis of the compactor board, is not only to examine the overall stiffness of the blade structure, and can guide people to optimize the structure of the upper blade and response analysis. This article is based on the dynamic and static finite element theory, and uses SolidWorks, HyperMesh software for three-dimensional modeling, using ANSYS software make static and modal analysis on the compactor board.

We can use SolidWorks software created the various sub-components of the compactor board and by converting the file format HyperMesh software. In the base on the compactor board of the main static and dynamic characteristics, I made the necessary simplification. After making the pre-treatment of the geometry and analysing the quantity, quality, layout, of the units, I mesh the whole structure and established the finite element model in detail. In the meanwhile I set the parameters of material and each sub-assembly including the thickness and density, etc.

Then I imitated three typical conditions in ANSYS, respectively are the static analysis and free station and constrained condition. And then I made the modal analysis and calculated them. In the end I evaluated the structural vibration characteristics of the compactor board.

Key words: Compactor Board；Finite-Element；modeling；statics；modal

目 录

1、绪论 1

1.1 引言 1

1.2 研究现状与趋势 2

1.3 研究内容 2

2、有限元理论及软件基础 4

2.1 弹性力学基础 4

2.1.1弹性力学基本方程 4

2.1.2平面问题与薄板弯曲 5

2.2有限元基本理论 5

2.2.1弹性体静力学理论基础 6

2.2.2 有限元解的收敛准则 8

2.2.3 有限元分析中几个重要问题 9

2.3 静态、动态分析理论 9

2.3.1静态分析理论 9

2.3.2模态分析理论 10

2.4软件介绍 10

2.4.1 SolidWorks软件介绍 10

2.4.2 HyperMesh软件介绍 11

2.4.3 Ansys软件介绍 11

3、工程车上刮板有限元建模 13

3.1 上刮板建模的一些基本问题 13

3.2 上刮板建模的基本流程 15

3.3 模型的建模具体过程 15

3.3.1 solidworks三维建模 15

3.3.2对上刮板进行面建模 16

3.3.3 模型简化 17

3.3.4 几何清理与划分网格 18

4、上刮板的静态分析 21

4.1 静力分析基础 21

4.2 静刚度的分析步骤 22

4.3 上刮板静态分析具体情况 22

5、上刮板的模态分析 26

5.1 模态分析方法 26

5.2 上刮板的自由模态分析 27

5.3 上刮板受约束的模态分析 30

6、结论与展望 34

6.1 结论 34

6.2 展望 34

致 谢 35

参考文献： 36

工程车上刮板分总成有限元建模及静动态特性分析

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