大型机电产品包装箱力学性能仿真分析

发布时间：2018-04-03 01:33

本文选题：包装箱结构　切入点：竹木复合材料　出处：《南京林业大学》2014年硕士论文

【摘要】：随着当前机电产品的飞速发展和全球化的市场需求，机电产品生产和出口比例增长迅速，每年需要消耗大量的机电产品包装箱，而包装箱结构和性能对保证产品质量有着重要的作用。本课题结合机电产品包装箱的材料和结构，采用CAE技术对包装箱进行了力学性能分析，，以达到新材料的实际应用和优化包装箱结构，为包装箱结构设计提供了一定的参考和依据。本文以机电产品包装箱为分析对象，采用有限元法对包装箱进行静力分析、模态分析和结构优化。首先，对现有市场上大多数机电产品包装箱的结构形式和材料进行调研，利用CAD软件Pro/Engineer完成机电产品包装箱的结构设计和三维实体模型，在ANSYS Workbench中导入几何模型并建立松木、杨木LVL和竹木复合材料的性能参数，对包装箱划分网格，建立包装箱有限元模型；然后，对包装箱底架在受均布载荷作用下，采用三种不同材料进行理论和有限元静力分析，以及包装箱整体在静止平放和吊装两种情况下的应力和变形情况，结果表明，有限元分析能够很好地反映包装箱的应力和变形情况，同时在相同载荷和约束的情况下，竹木复合材料的性能优于松木和杨木LVL；其次，对竹木复合材料包装箱进行模态分析，得出包装箱前10阶固有频率和振型，从而了解包装箱结构在相应频率范围内的薄弱之处和是否会发生共振，为结构设计提供一定的帮助；最后，对包装箱底架纵梁进行了结构优化设计，计算得到了最优化的纵梁截面尺寸，使得其体积减少了28.22%，从而降低了整体的重量，在满足使用要求的情况下,达到了优化结构、节约原材料和降低成本的目的。
[Abstract]:With the rapid development of mechanical and electrical products and the global market demand, the proportion of production and export of mechanical and electrical products is growing rapidly, and it needs to consume a large number of mechanical and electrical products packaging boxes every year.The structure and performance of the packing box play an important role in ensuring the quality of the product.Based on the material and structure of mechanical and electrical products, this paper analyzes the mechanical properties of packaging by CAE technology, in order to achieve the practical application of new materials and the optimization of packaging structure.It provides a certain reference and basis for the structural design of the packing box.In this paper, the static analysis, modal analysis and structural optimization of mechanical and electrical products packing cases are carried out by using finite element method (FEM).First of all, the structure and materials of most mechanical and electrical products packaging cases in the existing market are investigated. The structural design and three-dimensional solid model of mechanical and electrical products packaging cases are completed by using CAD software Pro/Engineer, and the geometric model is imported into ANSYS Workbench and pine wood is established.The performance parameters of poplar LVL and bamboo-wood composite materials are divided into meshes and a finite element model of packing cases is established, and then the theoretical and finite element static analysis of three different materials is carried out on the chassis of the packing box under uniform load.The results show that the finite element analysis can well reflect the stress and deformation of the package, and at the same time, under the same load and constraint,The properties of bamboo and wood composites are superior to those of pine and poplar. Secondly, the modal analysis of bamboo and wood composite packing cases is carried out, and the natural frequencies and modes of the first 10 stages of packing cases are obtained.In order to understand the weakness of the packing box structure in the corresponding frequency range and whether resonance will occur, it provides some help for the structural design. Finally, the structural optimization design of the longitudinal beam of the packing box chassis is carried out.The optimum cross-section size of the longitudinal beam is obtained, and the volume of the beam is reduced by 28.222.The weight of the whole beam is reduced. The optimization of the structure, the saving of raw materials and the reduction of cost can be achieved under the condition of satisfying the requirements of application.
【学位授予单位】：南京林业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB487

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