本文選題：包裝箱結構　切入點：竹木復合材料　出處：《南京林業(yè)大學》2014年碩士論文

【摘要】：隨著當前機電產(chǎn)品的飛速發(fā)展和全球化的市場需求，機電產(chǎn)品生產(chǎn)和出口比例增長迅速，每年需要消耗大量的機電產(chǎn)品包裝箱，而包裝箱結構和性能對保證產(chǎn)品質量有著重要的作用。本課題結合機電產(chǎn)品包裝箱的材料和結構，采用CAE技術對包裝箱進行了力學性能分析，，以達到新材料的實際應用和優(yōu)化包裝箱結構，為包裝箱結構設計提供了一定的參考和依據(jù)。 本文以機電產(chǎn)品包裝箱為分析對象，采用有限元法對包裝箱進行靜力分析、模態(tài)分析和結構優(yōu)化。首先，對現(xiàn)有市場上大多數(shù)機電產(chǎn)品包裝箱的結構形式和材料進行調研，利用CAD軟件Pro/Engineer完成機電產(chǎn)品包裝箱的結構設計和三維實體模型，在ANSYS Workbench中導入幾何模型并建立松木、楊木LVL和竹木復合材料的性能參數(shù)，對包裝箱劃分網(wǎng)格，建立包裝箱有限元模型；然后，對包裝箱底架在受均布載荷作用下，采用三種不同材料進行理論和有限元靜力分析，以及包裝箱整體在靜止平放和吊裝兩種情況下的應力和變形情況，結果表明，有限元分析能夠很好地反映包裝箱的應力和變形情況，同時在相同載荷和約束的情況下，竹木復合材料的性能優(yōu)于松木和楊木LVL；其次，對竹木復合材料包裝箱進行模態(tài)分析，得出包裝箱前10階固有頻率和振型，從而了解包裝箱結構在相應頻率范圍內的薄弱之處和是否會發(fā)生共振，為結構設計提供一定的幫助；最后，對包裝箱底架縱梁進行了結構優(yōu)化設計，計算得到了最優(yōu)化的縱梁截面尺寸，使得其體積減少了28.22%，從而降低了整體的重量，在滿足使用要求的情況下,達到了優(yōu)化結構、節(jié)約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.
【學位授予單位】：南京林業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TB487

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本文編號：1703053