某大屏手机的设计及其有限元分析

发布时间：2018-01-08 08:27

本文关键词：某大屏手机的设计及其有限元分析　出处：《苏州大学》2014年硕士论文　论文类型：学位论文

【摘要】：近年来，随着科学技术的发展，手机更新换代越来越快，具有超薄机身和大尺寸触摸屏的智能手机越来越受到市场的青睐，同时对手机结构设计提出了更高的要求。在各大手机品牌的售后维修中心的数据显示，由于手机壳摔坏和屏幕摔裂导致的更换手机壳和屏幕的比例越来越高，经常会引起消费者的投诉。因此提高手机产品结构强度十分迫切必要。目前虽然已有国内外许多学者采用有限元分析方法对手机跌落进行模拟仿真，但是现有研究都是对已经被市场淘汰的老款手机的，对目前市场上刚出现的主流的大屏超薄手机研究鲜见发表。因此本文在已有研究成果的基础上对某大屏手机进行结构设计及有限元分析。本文首先介绍了手机结构设计规范和注意要点，为结构设计优化及其机械性能的研究提供了理论依据。借助CATIA V5软件设计了某大屏手机。手机实体模型通过CATIA V5与ANSYS软件的通用接口直接导入到ANSYS中建立某大屏手机的参数化有限元模型。本文对某大屏手机进行了模态分析，取得了手机相应的前2阶固有频率，从而避开手机固有频率，选取了合适的手机振动马达。并根据实际情况，，通过ANSYS/LS-DYNA中的DTM模块跌落仿真模拟运算研究了碰撞力对该手机外壳、LCD、Touch和电池等部件的影响，最终得到了相应的应力、应变分布图以及加速度等动态特性，发现了手机结构的易损部位，提出了相应的优化方案。为同类型手机的结构强度理论的探讨和优化设计提供了参考。
[Abstract]:In recent years, with the development of science and technology, mobile phone update more quickly, has a slim body and large size touch screen smart mobile phone is more and more favored by the market, also put forward higher requirements on the structure of mobile phone design. In the major brands of mobile phone customer service maintenance center data show that the mobile phone shell fell the bad and the screen cracked leads to the replacement of mobile phone shell and screen the increasingly high proportion, will often lead to consumer complaints. It is urgent need to improve the mobile phone product structure strength. Although there are many scholars at home and abroad using the finite element analysis method of mobile phone drop simulation, but the existing research is to have been out of the market the old mobile phone, the mainstream of the current first appeared on the market of the large screen ultra-thin mobile phone are published. So this paper on a large screen hand on the basis of existing research results The machine is designed for structural design and finite element analysis.
This paper first introduces the design specification of mobile phone structure and key points, research provides a theoretical basis for the optimization design and its mechanical properties. A large screen mobile phone is designed with CATIA V5 software. Mobile phone entity model through the general interface directly into CATIA V5 and ANSYS software to build a large screen mobile phone ANSYS parameter in finite element model. This article carried on the modal analysis of a large screen mobile phone, made the first 2 natural frequencies of the corresponding mobile phone, mobile phone so as to avoid the inherent frequency, select the appropriate mobile phone vibration motor. According to the actual situation, through the DTM module in ANSYS/LS-DYNA sag studied the collision force on the mobile phone shell, operation simulation of LCD. Effect of Touch and battery and other components, obtained the corresponding stress diagram and dynamic characteristics such as acceleration, strain distribution, found the vulnerable parts of mobile phone structure, a phase The optimized scheme provides a reference for the discussion and optimization of the structural strength theory of the same type of mobile phones.

【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.53

【参考文献】