運(yùn)輸包裝件跌落沖擊的計(jì)算機(jī)仿真

包裝工程論文編號(hào):BZ044  論文字?jǐn)?shù):8680.頁數(shù):28

 
目錄
中文摘要............................................................I
英文摘要.......................................................... II
目錄............................................................. III
1.緒論..............................................................1
  1.1 傳統(tǒng)跌落實(shí)驗(yàn)..................................................1
  1.2 LS-DYNA程序...................................................1
  1.3 LS-DYNA在跌落試驗(yàn)的應(yīng)用.......................................3
2.仿真部分..........................................................5
  2.1 建立有限元模型................................................5
  2.2 仿真條件設(shè)置..................................................9
3.仿真結(jié)果分析.....................................................10
  3.1 面跌落分析...................................................10
  3.2 角跌落分析...................................................12
  3.3 楞跌落分析...................................................14
  3.4 跌落結(jié)果的分析比較...........................................15
4.結(jié)語.............................................................22
  4.1 總結(jié).........................................................22
  4.2 存在的不足...................................................22
  4.3 展望.........................................................22
致謝...............................................................23
參考文獻(xiàn)...........................................................24

摘要：本文主要是對(duì)液晶顯示器的緩沖包裝進(jìn)行研究。80%的電子產(chǎn)品損壞大都來源于跌落碰撞,研發(fā)人員往往耗費(fèi)大量的時(shí)間和成本,針對(duì)產(chǎn)品做相關(guān)質(zhì)量實(shí)驗(yàn),最常見的結(jié)構(gòu)實(shí)驗(yàn)就是跌落與沖擊試驗(yàn)。這種方法可靠，但是也存在很多弊端：成本過高；很難觀察過程中的現(xiàn)象；重復(fù)性差；無法得到原因；不易觀察內(nèi)部特征......而利用LS—DYNA在產(chǎn)品開模前，可解決上述問題，對(duì)對(duì)象進(jìn)行相關(guān)的模擬仿真可以大大減少研發(fā)周期以及相關(guān)成本。利用有限元分析軟件ANSYS的跌落模塊（DTM），建立液晶顯示器的緩沖包裝系統(tǒng)的有限元模型，對(duì)模型進(jìn)行角跌落，楞跌落,面跌落,從而通過等色圖或精確量化的形式得到動(dòng)態(tài)顯示沖擊過程，分析不同時(shí)刻不同高度應(yīng)力和應(yīng)變分布，比如進(jìn)行角跌落時(shí),應(yīng)力最大集中在與地面接觸的那個(gè)角上,而顯示器的最大應(yīng)力則在與襯墊相接觸的那個(gè)楞上,由此提出建議，優(yōu)化其緩沖包裝結(jié)構(gòu)。
關(guān)鍵詞：跌落；有限元；ANSYS；仿真
 
Abstract：This article is a liquid crystal display cushion packaging research. 80% of electronic products fell from collision damage most of the R & D personnel often spend a lot of time and cost for products related to the quality of the experiment, the most common structure is falling and the impact of the experimental test. This method is reliable, but there are many disadvantages: high cost; it is difficult to observe the phenomenon of the process; poor reproducibility; can not be reasons for that; ...... not easy to observe the internal features of LS-DYNA using the product to open touch ago, to address these issues, related to the object of simulation can be greatly reduced, as well as costs associated with R & D cycle. The use of ANSYS finite element analysis software module of the fall (DTM), the establish of LCD cushion packaging system, the finite element model of the model, the sutra, falling Angle, which fell by surface such as color chart or accurate quantitative dynamic display of the form, have no time impact analysis of different high stress and strain distribution, such as the biggest drop, stress concentration in contact with the ground, and the Angle of the maximum stress on display in the contact with the liner, and proposes suggestions on sutra, optimize the structure of cushion packaging.
Key words：drop; finite element;ANSYS; simulation