摘要本文为某水平冲击试验台设计一款通用夹具，可夹持直径在一定范围内的圆柱形试件。对夹具进行了结构设计、三维实体建模以及有限元分析，主要内容包括：

（1）根据水平冲击试验台的工作原理，以及试件的结构形状，按照要求初步拟定夹具结构，进行总体方案设计。根据功能分解对各零部件进行了结构详细设计，确定了相应尺寸。

（2）采用Solidworks软件进行夹具各零部件的三维造型，并且对各部分零件进行装配，获得夹具装配体，制作动画模拟装夹过程。63552

（3）采用Hypermesh软件对夹具体三维模型进行网格划分，将生成的三维网格通过inp格式转入Abaqus软件，施加位移边界条件和载荷，得到夹具重力作用下的静态有限元模型和冲击载荷作用下的动力学模型。通过仿真计算，分别得到夹具体应力分布云图和位移分布云图以及输出点值随时间的变化曲线。根据计算结果优化设计方案，得到重量较强、材料分布合理的较优方案。对优化前后夹具的仿真计算表明该夹具体满足刚强度要求，符合试验台水平冲击试验要求。

毕业论文关键词  水平冲击试验台  夹具  方案设计  三维实体建模  有限元分析

 毕业设计说明书（论文）外文摘要

Title Design and  Finite Element Analysis of a Special Fixture for the Horizontal shock testing machine

A Abstract

In the paper, a universal fixture for the horizontal shock test bench is designed, which can be used to clamp cylindrical specimen in a certain range. The structural design, three-dimensional solid  modeling and finite element analysis are used on the fixtures, which mainly includes:

(1) According to the level of shock test bench works, as well as the structure and shape, the structure of fixtures is designed to tentatively satisfy the requirements for the overall design. Various components of the structure are detailed designed and the appropriate size is determined according to the functional decomposition.

(2) The parts of the fixture are three-dimensional solid modeled using Solidworks software, and every part is assembled to obtain the fixture. Animation is made to simulate the setup process.

(3) The three-dimensional solid model of fixtures is meshed using Hypermesh software, and put the three-dimensional mesh into Abaqus software through inp document. Displacement boundary conditions and loads are applied to obtain the static finite element model under gravity and the dynamic model under shock load. The stress distribution contour, displacement distribution contour and the curve of the output point value changing over time were obtained through simulation and calculation. The reasonable solution in which the weight is lighter and material distribution is more reasonable is got based on the calculation result and optimal design plan. Fixture optimization simulation shows that the specific fixtures meet the strength and stiffness requirements, in line with the test requirements of impact test bench.

Keywords：Horizontal shock test bench  Fixture  Tentative design  Three-dimensional solid modeling  Finite element analysis  

 1  绪论 1

1.1  本课题的研究意义 1

1.2  冲击试验台及夹具概述 1

1.3  三维建模技术的发展 2

1.4  有限元法的简介情况及发展 3

1.5  本文主要研究内容 5

2  水平冲击试验台夹具结构设计