新型集装箱蜂窝地板试验研究分析

发布时间：2018-01-04 13:14

本文关键词：新型集装箱蜂窝地板试验研究分析　出处：《华南理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着现代运输业的飞速发展，集装箱作为标准化的货物运输载体在全球范围得到普及，我国已成为集装箱地板生产第一大国。在过去的30年中，集装箱的每个部件及其生产过程都有了显著的进步，但集装箱地板是个例外。集装箱地板行业一直非常依赖热带硬木地板，由于热带硬木的供应日渐减少而转向用于其他行业，诸如家具制造业等更为赢利的产业，供给集装箱地板的热带硬木早晚都会用完。并且传统集装箱地板存在着质量重、生产工艺的落后的特点，集装箱地板产业的发展已经受到严重制约[1]。蜂窝夹层结构最早起源于仿生学，与同类型的实心材料相比，蜂窝夹层结构具有比强度高、比刚度大、质量轻的特点，因而在航空、航天等领域得到广泛的应用。针对蜂窝夹层结构在集装箱地板上的应用进行研究显得十分必要。本文以正六边形蜂窝夹层结构为主要研究对象，在前人研究成果的基础上，首先从夹芯层结构特征、蜂窝夹层板的等效力学性能进行了研究，，根据三明治夹芯理论对蜂窝夹芯进行等效分析，蜂窝夹芯层的弹性模量影响夹层板整体力学强度和刚度，而夹芯层的材料和结构决定弹性模量的大小；然后根据集装箱地板实际试验工况和传统胶合木地板力学强度试验标准，根据已有蜂窝地板优化结论，寻求出满足集装箱地板力学强度的蜂窝尺寸结构；同时，根据小样试验标准，利用ANSYS有限元软件，模拟三点弯曲试验和压块试验，对蜂窝地板进行静力学分析，研究蜂窝夹层结构地板的力学性能，讨论蜂窝结构材料应用于集装箱地板的可能性；最后，对蜂窝结构进行试验分析，根据弯曲强度试验过程和实测值，对蜂窝结构的压缩破坏阶段进行特征分析，并对蜂窝夹层结构在三点弯曲强度和四点弯曲强度情况下可能出现的破坏模式进行分析。
[Abstract]:With the rapid development of modern transport industry, container as a standardized carrier of cargo transportation has been popularized in the world, China has become the largest container floor production country. In the past 30 years. Every part of the container and its production process has improved significantly, except for container flooring, which has been heavily dependent on tropical hardwood flooring. As the supply of tropical hardwoods dwindles, they are diverted to other industries, such as furniture manufacturing, which are more profitable. The tropical hardwood supplying container floor will run out sooner or later. And the traditional container floor has the characteristics of heavy quality and backward production technology, the development of container floor industry has been seriously restricted. [1]. Honeycomb sandwich structure originated from bionics, compared with the same type of solid materials, honeycomb sandwich structure has the characteristics of high specific strength, high specific stiffness and light mass, so it is in aviation. The application of honeycomb sandwich structure on container floor is very necessary. In this paper, hexagonal honeycomb sandwich structure as the main research object, on the basis of previous research results, first from the sandwich layer structure characteristics, honeycomb sandwich plate equivalent mechanical properties were studied. According to sandwich sandwich sandwich theory, the equivalent analysis of honeycomb sandwich core is carried out. The elastic modulus of honeycomb sandwich layer affects the overall mechanical strength and stiffness of sandwich plate, while the material and structure of sandwich layer determine the magnitude of elastic modulus. Then according to the actual test conditions of container flooring and the test standard of mechanical strength of traditional glued wood flooring, according to the existing optimization conclusions of honeycomb flooring, the honeycomb size structure which can meet the mechanical strength of container flooring is found out. At the same time, according to the small sample test standard, using ANSYS finite element software, simulating three-point bending test and block test, the static analysis of honeycomb flooring is carried out, and the mechanical properties of honeycomb sandwich flooring are studied. The possibility of applying honeycomb structure materials to container flooring is discussed. Finally, the honeycomb structure is tested and analyzed. According to the bending strength test process and the measured value, the characteristics of the honeycomb structure in compression failure stage are analyzed. The failure modes of honeycomb sandwich structures under three point bending strength and four point bending strength are analyzed.
【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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