新型蜂窝集装箱地板结构的优化设计

发布时间：2018-04-15 07:28

本文选题：蜂窝集装箱地板 + 优化设计　；参考：《华南理工大学》2012年硕士论文

【摘要】：在满足集装箱地板的强度要求前提下，减少自身重量，以增加货运量，是对集装箱地板制造业提出的特殊要求。而对集装箱地板的结构进行优化，可以解决上述的特殊要求。本文在分析国内外集装箱地板的研究成果和应用现状的基础上，，提出采用铝合金作为面层材料，增强铝蜂窝芯作为中间层，使用胶黏剂将蜂窝芯与面板粘结、定型、固化，制造出高性能轻质的铝蜂窝地板应用于替代传统的硬木胶合板。并对新型的蜂窝集装箱地板进行结构上的优化及改进，以减轻集装箱地板重量，降低能耗，提高零部件的利用率。试制蜂窝地板，研究其在弯曲载荷作用下的失效形式，并分析其失效的原因，得出蜂窝芯的强度性能和面层的弯曲性能对整体蜂窝地板的力学性能具有极大的影响，优化模型的建立需要考虑上述因素。根据蜂窝集装箱地板结构的优化设计准则，从蜂窝集装箱地板的弯曲性能、蜂窝芯强度要求、夹层板的自由振动固有频率和夹层板质量四个方面进行优化，并以稳定性条件、屈曲极值条件、剪切强度条件和地板刚度条件作为四个约束条件，构造评价函数，编写程序，得出较高精度的尺寸和性能的最优值，并对结构进行强度校核，得出集装箱地板优化结构，结果表明优化出集装箱地板能满足使用要求。但铝蜂窝地板的成本高，使得其难以用于大规模的生产。为了促进新蜂窝地板在实际工程中的推广应用，提高蜂窝地板的抗弯刚度，增大其截面的惯性矩，本文在原优化的蜂窝地板的基础上进行改进，提出以铝合金为面板，铝蜂窝芯和玻璃钢加强筋形成芯层的改进的夹层结构，这种结构的比刚度和比强度较之纯粹的铝蜂窝夹层结构更好。且制造成本有明显的降低。
[Abstract]:It is a special requirement for container flooring manufacturing industry to reduce its own weight and increase freight capacity on the premise of meeting the requirements of container floor strength.The structure of the container floor optimization, can solve the special requirements mentioned above.On the basis of analyzing the research results and application status of container floor at home and abroad, this paper puts forward that aluminum alloy is used as surface layer material, aluminum honeycomb core is used as intermediate layer, honeycomb core is bonded with face panel by adhesive agent, and the honeycomb core is fixed and solidified.High-performance lightweight aluminum honeycomb floor is used to replace traditional hardwood plywood.The structure of the new honeycomb container floor is optimized and improved in order to reduce the weight of container floor, reduce energy consumption and improve the utilization ratio of components.In this paper, the failure form of honeycomb flooring under bending load is studied, and the causes of failure are analyzed. It is concluded that the strength performance of honeycomb core and the bending performance of surface layer have great influence on the mechanical properties of honeycomb flooring.The above factors need to be taken into account in the establishment of the optimization model.According to the optimum design criteria of honeycomb container floor structure, the bending performance of honeycomb container floor, the strength requirement of honeycomb core, the natural frequency of free vibration of sandwich plate and the quality of sandwich plate are optimized, and the stability conditions are used.As four constraints, the extreme buckling condition, shear strength condition and floor stiffness condition are used to construct the evaluation function, write a program, obtain the optimum value of the dimension and performance of the structure with higher precision, and check the strength of the structure.The optimized structure of container floor is obtained, and the result shows that the optimized container floor can meet the requirements.But the high cost of aluminum honeycomb floor makes it difficult to use in large-scale production.In order to promote the application of new honeycomb flooring in practical engineering, improve the bending stiffness of honeycomb flooring and increase the moment of inertia of its section, this paper improves on the original optimized honeycomb flooring, and puts forward the aluminum alloy as the panel.Aluminum honeycomb core and FRP reinforced bars form an improved sandwich structure with core layer. The specific stiffness and specific strength of this structure are better than those of pure aluminum honeycomb sandwich structure.And the manufacturing cost is obviously reduced.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH247

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