【正文】 計(jì)的效果。對(duì)于開槽方向改變后對(duì)緩沖性能的影響得出的結(jié)論是開槽方向垂直楞型的方向要好于和瓦楞紙板的楞型方向相同的結(jié)構(gòu)。通過對(duì)這幾個(gè)方面分析出來的結(jié)果的比較，研究和討論得出他們結(jié)構(gòu)的改變對(duì)瓦楞紙板緩沖性能會(huì)有怎樣的影響。所得結(jié)果對(duì)于我們?cè)趯?duì)我們?cè)O(shè)計(jì)產(chǎn)品的包轉(zhuǎn)結(jié)構(gòu)時(shí)更好保護(hù)產(chǎn)品發(fā)揮瓦楞紙板在結(jié)構(gòu)上的優(yōu)越性具有重要的指導(dǎo)意義。其研究的內(nèi)容是外界條件的改變，比如溫度，濕度等的改變對(duì)瓦楞紙板緩沖性能的影響。目前對(duì)瓦楞紙板性能的研究，國(guó)內(nèi)外取得了很大的進(jìn)展，并且不斷的發(fā)展。武漢理工大學(xué)畢業(yè)設(shè)計(jì)論文瓦楞紙的有限元分析目錄摘要 2Abstract 3 5 5 國(guó)內(nèi)外的研究現(xiàn)狀 5 6 72 分析方案的選擇及流程概述 8 8 103 瓦楞紙板模型的建立 11 瓦楞紙板的結(jié)構(gòu) 11 模型的建立 12 solidworks軟件的介紹 12 建立模型圖的介紹 124 優(yōu)化設(shè)計(jì)分析過程及流程 13 ANSYS軟件的介紹 13 模型在ANSYS中的分析過程和流程概述 14 具體的分析過程結(jié)果分析討論 14 14 開槽結(jié)構(gòu)為30x5的分析結(jié)果 24 28。 33 38 44 44 研究展望 45參考文獻(xiàn) 46致謝 48摘要瓦楞紙板襯墊是一種逐步代替泡沫襯墊的環(huán)保型緩沖包裝材料結(jié)構(gòu) ,符合現(xiàn)代物流與運(yùn)輸包裝工業(yè)的應(yīng)用發(fā)展趨勢(shì)。對(duì)瓦楞紙板緩沖性能的研究尤其成為研究的重點(diǎn)，總結(jié)國(guó)內(nèi)外的研究了解到，對(duì)瓦楞紙板緩沖性能的研究，其方法大都是通過進(jìn)行大量的試驗(yàn)，對(duì)得出的試驗(yàn)數(shù)據(jù)進(jìn)行分析，找出瓦楞紙板具有的基本特征， 利用數(shù)值分析的方法建立數(shù)學(xué)模型，再使用優(yōu)化方法對(duì)模型參數(shù)進(jìn)行識(shí)別，這種方法既費(fèi)時(shí)又費(fèi)力還浪費(fèi)資源，且整個(gè)過程極為復(fù)雜，容易出錯(cuò)。本文借助有限元分析軟件對(duì)瓦楞紙板進(jìn)行緩沖性能的分析，而此瓦楞紙板是一個(gè)帶有開槽結(jié)構(gòu)的A型三層瓦楞紙板，主要是對(duì)瓦楞紙板的結(jié)構(gòu)在受靜載荷情況下對(duì)其緩沖性能的分析，通過改變瓦楞紙板的結(jié)構(gòu)而得到不同的分析結(jié)果，對(duì)比研究這些分析結(jié)果從而得到一個(gè)在緩沖性能上最優(yōu)的結(jié)構(gòu)，進(jìn)而達(dá)到優(yōu)化設(shè)計(jì)的目的。論文介紹了國(guó)內(nèi)外研究瓦楞紙板的現(xiàn)狀以及研究的方法,闡述了瓦楞紙板的一些基本知識(shí)和性質(zhì)，本文主要研究了瓦楞紙板結(jié)構(gòu)在開槽的寬度、長(zhǎng)度、方向、位置以及開槽的數(shù)量幾個(gè)方面的改變對(duì)其緩沖性能的影響。研究結(jié)果表明：開槽寬度對(duì)緩沖性能的影響是開槽寬度越大其緩沖性能越壞，而開槽長(zhǎng)度對(duì)緩沖性能的影響也有同樣的效果，開槽長(zhǎng)度越長(zhǎng)其緩沖性能越差。對(duì)開槽位置改變后的研究得出了一個(gè)初步的結(jié)果，得出了一個(gè)大概的變化規(guī)律，由于時(shí)間有限沒有做進(jìn)一步深入的研究。 關(guān)鍵詞：瓦楞紙板，緩沖，有限元分析,ANSYS.AbstractCorrugated cardboard liner is a foam pad to gradually replace the environmentfriendly packaging materials buffer structure, in line with the modern logistics and transportation applications packaging industry trends. The current performance of corrugated cardboard, at home and abroad has made great progress, and constant development. Buffer performance of corrugated cardboard are of particular interest to bee the focus of the study, summed up the research at home and abroad that the performance of the corrugated cardboard buffer study, the methods are carried out through a large number of tests derived from an analysis of test data to identify corrugated cardboard with the basic characteristics of the methods of numerical analysis using a mathematical model, optimization method to use to identify the model parameters, this method is timeconsuming and also a waste of resources and effort, and the whole process is extremely plicated and prone to error. Their study is the change in external conditions, such as temperature, humidity changes, such as corrugated cardboard cushion the impact of performance.
In this paper, using finite element analysis software for the corrugated cardboard for the analysis of the buffer line, and the corrugated board is slotted with a threetier structure of Atype corrugated cardboard, corrugated cardboard is the main structure in the case of static load its buffer performance analysis, by changing the structure of corrugated cardboard to be different from the results of the analysis, parative study of these results in order to get an optimal performance in the buffer structure, which is designed to optimize. The results for our products in the packages we have designed to better protect the product structure of corrugated cardboard play structure of the superiority of great guiding significance.
This paper introduces research the status of corrugated cardboard, as well as research methods, the corrugated cardboard v. illustrates some of the basic knowledge and nature, this paper studied the structure of corrugated cardboard in the slot width, length, direction, location and number of grooves changes in several aspects of performance of its buffer. Through the analysis of several aspects of the results of the studies and discussions of their changes in the structure of corrugated cardboard, how will buffer the impact of performance.
The results show that: the width of grooves on the buffer performance is the greater the buffer width slotting more bad performance, and slotted the length of the buffer the impact of performance has the same effect, the longer the slot length the worse the performance of its buffer. Change direction with the grooves on the impact of the buffer properties of the driving directions to the conclusion that the direction of the vertical type treng better and corrugated cardboard in the same direction treng type structure. Change the location of the slot after a preliminary study of the results obtained about changes in a law, because of the time did not do further research.
In this paper, the characteristics are: the study is to use finite element analysis software to study the direction and content from the structure of corrugated cardboard on the properties of the buffer, so as to achieve optimal design results.
Keywords: corrugated board, buffer, finite element analysis, ANSYS.瓦楞紙板因具有無污染、可再生、具有良好的緩沖性能等優(yōu)點(diǎn)，在包裝中得到廣泛應(yīng)用。到第二次世界大戰(zhàn)時(shí)，瓦楞紙箱已代替木箱在運(yùn)輸包裝中占到80%。我國(guó)瓦楞紙箱業(yè)起步較晚，1954年才開始推廣使用瓦楞紙箱，技術(shù)起點(diǎn)也低。珠江三角洲、長(zhǎng)江三角洲及沿海經(jīng)濟(jì)發(fā)達(dá)地區(qū)，已經(jīng)擁有瓦楞生產(chǎn)線2000多條，市場(chǎng)上瓦楞紙板，幾乎全部由生產(chǎn)線提供。經(jīng)過上世紀(jì)前后七、八年的發(fā)展，開創(chuàng)了我國(guó)瓦楞紙箱生產(chǎn)線生產(chǎn)的新時(shí)期。與蓬勃發(fā)展的瓦楞紙板工業(yè)相比，包裝的科研與學(xué)術(shù)領(lǐng)域也積極開展了對(duì)瓦楞紙板的生產(chǎn)工藝、結(jié)構(gòu)、性能等問題的研究。環(huán)保和可持續(xù)發(fā)展的理念滲入，已經(jīng)成為包裝設(shè)計(jì)重點(diǎn)考慮的因素。微型瓦楞和重型瓦楞以及一些新興的以瓦楞為基礎(chǔ)的緩沖材料是瓦楞紙板工業(yè)發(fā)展的趨勢(shì)，進(jìn)而帶來的瓦楞紙板等緩沖材料力學(xué)特性問題的研究將會(huì)更加深入和產(chǎn)業(yè)化，相信在計(jì)算機(jī)技術(shù)的高速發(fā)展下，這些問題在不久的將來會(huì)有新的突破。因此為了更好地利用瓦楞紙板，有必要對(duì)它的各種性能及新的結(jié)構(gòu)進(jìn)行研究和開發(fā)，對(duì)瓦楞紙板性能的研究具有重大的現(xiàn)實(shí)意義。研究了加筋瓦楞紙板的抗壓穩(wěn)定性，獲得了筋條的形式、個(gè)數(shù)、位置對(duì)瓦楞紙板抗壓性能的影響關(guān)系[12]。程小琴等試驗(yàn)研究了4種濕度條件對(duì)瓦楞紙板的邊壓強(qiáng)度、粘合強(qiáng)度、戳穿強(qiáng)度和耐破度的影響關(guān)系，發(fā)現(xiàn)邊壓強(qiáng)度、粘合強(qiáng)度隨環(huán)境濕度的增大而明顯下降[5]。劉嘩等研究分析了3B、x一PLY舊)型三層瓦楞紙板的強(qiáng)度特性、靜態(tài)平壓應(yīng)力應(yīng)變曲線規(guī)律，按線性、正弦、正切曲線分段建立了非線性數(shù)學(xué)模型及其參數(shù)[67]。郭彥峰等研究分析了環(huán)境溫濕度對(duì)AB型雙瓦楞紙板的蠕變及回復(fù)特性的影響關(guān)系，給出了蠕變一時(shí)間曲線的分段式經(jīng)驗(yàn)公式及其特征系數(shù)[10]。周媛等試驗(yàn)研究了5層瓦楞紙板強(qiáng)度與原紙強(qiáng)度的關(guān)系，利用SAS軟件計(jì)算分析了雙瓦楞紙板的邊壓強(qiáng)度、耐破度的回歸方程，為瓦楞紙板強(qiáng)度的預(yù)測(cè)和紙板的配合方案提供了計(jì)算依據(jù)[13]。Haln等研究了瓦楞紙板在邊壓載荷條件下的彎曲特性、壓潰變形機(jī)理和臨界載荷[1516]?；谟邢拊耐呃慵埌謇阈脱芯縇u等對(duì)瓦楞紙板的初始正弦波瓦楞在垂直載荷條件下控制面板局部壓潰、紙板整體變形的作用進(jìn)行了理論與試驗(yàn)研究[18].Nordstrand等基于正交各向異性材料的模型利用有限元法研究分析了瓦楞紙板的面板局部彎曲對(duì)紙板整體后屈曲的影響、材料失效準(zhǔn)則和壓潰載荷[19]。本文對(duì)利用有限元法對(duì)瓦楞紙板緩沖性能的研究并在此基礎(chǔ)上對(duì)瓦楞紙板的結(jié)構(gòu)進(jìn)行優(yōu)化設(shè)計(jì)。3. 將建模后的瓦楞紙板結(jié)構(gòu)導(dǎo)入有限元分析軟件中,對(duì)其結(jié)構(gòu)進(jìn)行緩沖性能的分析。研究的技術(shù)方案:1. 本文研究的對(duì)象是三層瓦