纸浆模塑包装制品的力学性能分析与结构设计优化

论文编号:BZ029  论文字数:10419.页数:31

摘 要：纸浆模塑制品的缓冲性能与其结构形式、形状尺寸及原料组成密切相关，结构体的形状、侧壁斜度、厚度和高度等结构参数决定着纸浆模塑结构在包装应用中的抗压、缓冲和防振性能，其特点是通过制品的几何形状构成力学结构来增大缓冲性能.本文以圆台状和肋状纸浆模塑单元结构为研究对象，利用ANSYS软件进行模拟，研究了纸浆模塑单元几个主要结构参数对其缓冲性能的影响，并分析在静载荷作用下纸浆模塑单元的内部应力分布规律，得出纸浆模塑单元的应力和变形特点。通过对纸浆模塑变形过程的模拟与归纳，得出随着单元高度增加，其承载能力逐渐下降。当单元高度增大到一定程度后，随着高度的继续增加，其承载能力变化并不显著，对于圆台状单元，在单元承载时，靠近圆台上端面部分应力普遍较大，而在圆台单元下端则应力分布较小，其中上端面与侧面圆角过渡处出现壳内最大应力，对于肋状单元，在静载荷作用下壳内最大应力出现在上端面的四个棱角处。纸浆模塑结构单元的缓冲性能与其单元厚度及承载边边长成正比。

关键词：纸浆模塑；ANSYS 模拟；结构参数；应力—应变曲线

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

目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
 1.1 纸浆模塑 1
 1.2 有限元简介 4 
2. ANSYS仿真 5
 2.1 纸浆模塑结构单元及参数 5
 2.2 有限元模型的生成 6
 2.3 网格划分 7
 2.4 模型求解 8
3. 结果与讨论 10
 3.1 圆台状单元及肋状单元应力分布特点 10
 3.2 圆台单元的极限载荷 14
 3.3 结构参数对单元缓冲性能的影响 17
4．总结与展望 25
致谢 27
参考文献 28