PET饮料瓶的有限元分析

机械设计制造及其自动化论文，论文编号:JX1222  论文字数:15001.页数:35

 摘    要
 
 PET材料饮料瓶在全世界市场得到广泛应用，重量轻和牢固结实是对饮料瓶即经济又实用的基本要求。传统方式是开模具加工后再测试强度，如不符合要求再重新进行瓶子的结构设计，这无疑增加了生产成本。如瓶体设计好后先在计算机中对瓶体进行结构力学分析，反复修订后再加工这样可节省成本。但目前生产过程中缺少相应的瓶体结构力学的有限元分析。因此本文在了解PET瓶的发展前景和其材料特性基础之上，以PET饮料瓶为研究对象，应用Ansys软件对瓶体的强度进行计算。利用非线性有限元分析理论为基础，对瓶子采取壳体4节点塑性181单元为具体研究对象，在一定的载荷压力下，进行结构稳定性分析，最后改变瓶子的相关主要参数，得出不同设计参数下的瓶体的结构力学结果，对其进行分析比较，最后得到符合瓶体模型的参数。

关键词：PET材料 饮料瓶 Ansys 静态结构力学分析

Abstract
 
 The PET material beverage bottle obtains the widespread application in the world market, the weight light and reliable solid has a drink together the glass jar is the economical practical basic request. After the traditional way is opens the mold processing to test the intensity again, if does not conform to the requirement to carry on the jar again the structural design, this increased the production cost without doubt. If after the bottle body designs first carries on the structure mechanics analysis in the computer to the bottle body, after revises the retreatment to be possible repeatedly to save the cost like this.But in at present production process lacks the corresponding bottle body structure mechanics the finite element analysis. Therefore this article in understood the PET bottle above the prospects for development and its materials behavior foundation, take the PET beverage bottle as the object of study, carries on the computation using the Ansys software to the bottle body intensity. Using the non-linear finite element analysis theory is the foundation, adopts the shell 4 node plasticity 181 units to the jar for the concrete object of study, under certain load pressure, carries on the structural stability analysis, finally changes the jar the correlation main parameter, obtains under the different design variable the bottle body structure mechanics result, carries on the analysis comparison to it, finally obtains conforms to the bottle phantom parameter.
 
Key word: PET material  Beverage bottle  Ansys  static state structure mechanics analysis
目  录
中文摘要 i
英文摘要 ii
目  录 iii
第 一 章    绪   论 1
1.1研究的背景和意义 1
1.2目前PET饮料瓶的发展状况 1
1.2.1我国的发展现状 1
1.2.2全球PET的发展现状 2
1.3 塑性材料的特性和应用 3
1.4 研究的主要方法和主要内容 4
第 二 章  PET饮料瓶有限元分析过程 5
2.1 Ansys软件介绍 5
2.2 前处理阶段 7
2.3 计算分析阶段 13
2.4 后处理阶段 14
2.5对分析结果的对比和解释 23
第 三 章 局部载荷施加分析 26
第 四 章  总 结 29
参考文献 30
致 谢 31