真空吸附游艇模具表面网架和支撑架的尺寸及布局的研究

发布时间：2018-05-06 07:31

本文选题：游艇模具 + 网架　；参考：《集美大学》2016年硕士论文

【摘要】：近年来,随着经济的迅速发展和生活水平的提高,中国越来越多的沿海城市已具备消费游艇的能力,游艇产业已步入黄金时期。快速发展的游艇产业提出了对艇体成型工艺的更高的要求,游艇模具的制造是艇体成型工艺的中心环节,游艇模具好坏直接影响艇体质量。本文以真空吸附游艇模具及表面网架为研究对象,以模具表面刚度为研究目标,通过参数化建模和有限元仿真对网架尺寸进行优化。根据以上研究结果对游艇模具支撑架的布局提出几点建议。论文的主要研究内容及结果如下:(1)联合应用3D建模软件Rhino和参数化建模插件Grasshopper对游艇模具及表面网架进行了参数建模。通过修改关键参数便可以快速修网架的尺寸,大大提高了几何建模的效率,为进一步优化其结构打下了基础。(2)应用Hypermesh软件对游艇模具及表面网架几何模型进行简化和清理等前处理工作,并选定网格划分方法和加载方式建立有限元模型。以校核游艇模具的强度和刚度为目标,运用有限元求解器Optistruct模拟游艇模具在三种典型工况下,对游艇模具及表面网架进行静态分析。结果表明,第三种工况即模具在真空吸附时是最危险的工况,游艇模具及表面网架结构优化应以载荷工况3为边界条件进行优化。(3)以增加游艇模具的刚度为目标,对网架尺寸进行优化。研究结果表明,优化后游艇模具的应变相比于优化前的应变减小了43%,大大提高了游艇模具的刚度,达到预期的效果,具有一定的实际工程价值。(4)根据以上研究结果,找出游艇模具受力较大的地方,合理地设计出支持架的布局。
[Abstract]:In recent years, with the rapid development of economy and the improvement of living standards, more and more coastal cities in China have the ability to consume yachts, and yacht industry has entered a golden period. The rapid development of the yacht industry puts forward higher requirements for the hull forming process. The manufacture of the yacht mold is the central link of the hull forming process, and the quality of the yacht mold directly affects the hull quality. In this paper, the vacuum adsorption yacht mold and the surface grid are taken as the research objects, and the die surface stiffness is taken as the research object. The size of the grid is optimized by parameterized modeling and finite element simulation. According to the above research results, some suggestions are put forward for the layout of the yacht die support frame. The main contents and results of this paper are as follows: (1) 3D modeling software Rhino and parametric modeling plug-in Grasshopper are used to model the yacht mold and surface grid. By modifying the key parameters, the dimensions of the grid frame can be repaired quickly, and the efficiency of geometric modeling can be greatly improved. It lays a foundation for further optimizing its structure. It uses Hypermesh software to simplify and clean the geometric model of yacht mould and surface grid, and establishes the finite element model by selecting the method of mesh generation and loading method. In order to check the strength and rigidity of the yacht mould, the finite element solver Optistruct is used to simulate the yacht mold under three typical working conditions, and the static analysis of the yacht mold and the surface grid is carried out. The results show that the third condition is the most dangerous condition when the mould is adsorbed in vacuum. The optimization of the structure of the yacht mould and the surface grid should be carried out under the boundary condition of load condition 3) to increase the rigidity of the yacht mold. The size of the grid is optimized. The results show that the strain of the optimized yacht mould is reduced by 43 percent compared with the strain before optimization, which greatly improves the rigidity of the yacht mold, achieves the expected effect, and has certain practical engineering value. Find out the larger force of the yacht mold, reasonable design of the layout of the support frame.
【学位授予单位】：集美大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U674.91

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