紙漿模塑包裝制品的力學(xué)性能分析與結(jié)構(gòu)設(shè)計(jì)優(yōu)化

包裝工程論文編號:BZ029  論文字?jǐn)?shù):10419.頁數(shù):31

目  錄
中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
 1.1 紙漿模塑 1
 1.2 有限元簡介 4 
2. ANSYS仿真 5
 2.1 紙漿模塑結(jié)構(gòu)單元及參數(shù) 5
 2.2 有限元模型的生成 6
 2.3 網(wǎng)格劃分 7
 2.4 模型求解 8
3. 結(jié)果與討論 10
 3.1 圓臺狀單元及肋狀單元應(yīng)力分布特點(diǎn) 10
 3.2 圓臺單元的極限載荷 14
 3.3 結(jié)構(gòu)參數(shù)對單元緩沖性能的影響 17
4．總結(jié)與展望 25
致謝 27
參考文獻(xiàn) 28

摘 要：紙漿模塑制品的緩沖性能與其結(jié)構(gòu)形式、形狀尺寸及原料組成密切相關(guān)，結(jié)構(gòu)體的形狀、側(cè)壁斜度、厚度和高度等結(jié)構(gòu)參數(shù)決定著紙漿模塑結(jié)構(gòu)在包裝應(yīng)用中的抗壓、緩沖和防振性能，其特點(diǎn)是通過制品的幾何形狀構(gòu)成力學(xué)結(jié)構(gòu)來增大緩沖性能.本文以圓臺狀和肋狀紙漿模塑單元結(jié)構(gòu)為研究對象，利用ANSYS軟件進(jìn)行模擬，研究了紙漿模塑單元幾個(gè)主要結(jié)構(gòu)參數(shù)對其緩沖性能的影響，并分析在靜載荷作用下紙漿模塑單元的內(nèi)部應(yīng)力分布規(guī)律，得出紙漿模塑單元的應(yīng)力和變形特點(diǎn)。通過對紙漿模塑變形過程的模擬與歸納，得出隨著單元高度增加，其承載能力逐漸下降。當(dāng)單元高度增大到一定程度后，隨著高度的繼續(xù)增加，其承載能力變化并不顯著，對于圓臺狀單元，在單元承載時(shí)，靠近圓臺上端面部分應(yīng)力普遍較大，而在圓臺單元下端則應(yīng)力分布較小，其中上端面與側(cè)面圓角過渡處出現(xiàn)殼內(nèi)最大應(yīng)力，對于肋狀單元，在靜載荷作用下殼內(nèi)最大應(yīng)力出現(xiàn)在上端面的四個(gè)棱角處。紙漿模塑結(jié)構(gòu)單元的緩沖性能與其單元厚度及承載邊邊長成正比。

關(guān)鍵詞：紙漿模塑；ANSYS 模擬；結(jié)構(gòu)參數(shù)；應(yīng)力—應(yīng)變曲線

Abstract: Pulp mold  product of buffer function and it the structure form, shape size and raw material constitute close related, the shape, side wall gradient, thickness of the structure body and height etc. structure parameter decision pulp mold the Su structure is in the packing the application of the anti- press, buffer with defend to flap function, this text at circle set form and rib form pulp mold Su unit structure foundation up, make use of the ANSYS software carry on imitate, research pulp mold Su unit a few main structure parameter as to it's buffer function of influence, and analysis at quiet carry a lotus function to descend a pulp mold Su unit of inner part should the dint distribute regulation, get pulp mold Su unit of should dint with transform a  characteristics.Along with unit height increment, it loading ability gradual descend.When unit height enlarge certain degree after, along with height of continue increment, it loading ability variety don't show Zhao, for circle set form unit, at unit loading, close to circle the on the stage carry face cent should the dint be widespread bigger, but at circle pedestal unit bottom carry should the dint distribute smaller, among them top end noodles and on the side circle Cape transition the place appear biggest inside hull should dint, for rib form unit, biggest in quietly carry the lotus function the bottom the hull should the dint appear in the top end noodles of four sharp angle.Buffer function and its unit thickness and loading side side of the pulp mold Su structure unit grow up a direct proportion.
Keywords：molded pulp;ANSYS simulation;structure Parameters;stress-strain curve