GLARE层板抗冲击性能研究

发布时间：2018-01-17 16:20

本文关键词：GLARE层板抗冲击性能研究　出处：《哈尔滨理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：玻璃纤维增强铝合金复合材料层合板（Glass Reinforced AluminumLaminates,简称GLARE层合板）是由玻璃纤维增强复合材料与高强度的铝合金薄板构成，，在特定的温度和压力下，使用胶接技术相互交替铺层、固化而成，其兼具了两种材料的优点。与铝合金单层薄板相比较，GLARE层合板的质量更轻，而且抗疲劳等性能更好，而相对于玻璃纤维复合材料板，GLARE层合板的加工性能更好，而且GLARE层合板的抗冲击性能明显更好一些。为了满足检查、拆装、维护等需要，经常会在层合板上加工出各种各样的孔，其中以铆接孔占多数，这些孔在很大程度上影响了GLARE层合板的力学性能。对三个类型的GLARE层合板分别以圆孔与冲击位置的距离进行编号，分组进行低速冲击实验，实验分析结果表明：随着圆孔逐渐远离冲击位置，GLARE层合板承受的最大载荷增加，最终吸收的冲击能量变小，完成冲击损伤变形的时间缩短，冲击后最大位移与最终位移变小，以上结果说明圆孔对层合板的抗冲击性能的影响变小，当距离达到20mm时，圆孔的影响已基本为零。利用ABAQUS/CAE软件对GLARE层合板进行了有限元模拟分析，并运用三维Hashin损伤准则以及逐渐失效分析方法，建立了与实验相同载荷工况下的数值模型，并对该模型进行有限元数值模拟分析，将得到的模拟结果与实验结果进行对比分析，发现二者的吻合度较高，说明了本文中的建模方法是合理的。应用该有限元模型，对不同尺寸的冲头对层合板抗冲击性能的影响进行了研究，同时，对不同的铺层方式对含孔GLARE层合板抗冲击性能的影响进行了有限元预测模拟分析，发现对于同一种层合板而言，冲头尺寸越大，层合板的抗冲击性能越好；而不同的铺层方式中，正交铺层的层合板的抗冲击性能最好。
[Abstract]:Glass Reinforced AluminumLaminates laminated with glass fiber reinforced aluminum alloy composite. GLARE laminates are composed of glass fiber reinforced composites and high strength aluminum alloy sheets. Under specific temperature and pressure, the laminates are made of interchangeable laminates and solidified by adhesive bonding technology. Compared with aluminum alloy monolayer laminates, GLARE laminates have lighter quality and better fatigue resistance than glass fiber composite plates. GLARE laminates have better processing performance and GLARE laminates have better impact resistance. In order to meet the inspection, disassembly, maintenance and other needs. A variety of holes are often machined on laminated plates, in which riveted holes are the majority, which greatly affect the mechanical properties of GLARE laminates. The three types of GLARE laminates are numbered by the distance between the circular hole and the impact position, and the low-speed impact experiments are carried out in groups. The experimental results show that: with the circular hole gradually away from the impact position. The maximum load of GLARE laminates increases, the final absorbed impact energy becomes smaller, the time to complete impact damage deformation is shortened, and the maximum displacement and final displacement after impact become smaller. The above results show that the effect of circular holes on the impact resistance of laminated plates becomes smaller, and when the distance reaches 20mm, the effect of circular holes is basically zero. The finite element analysis of GLARE laminated plate is carried out by using ABAQUS/CAE software, and the three-dimensional Hashin damage criterion and the method of gradual failure analysis are used. The numerical model under the same load condition is established, and the finite element numerical simulation analysis is carried out. The simulation results are compared with the experimental results, and it is found that the coincidence between the two models is high. It is shown that the modeling method in this paper is reasonable. Using the finite element model, the effects of different sizes of punches on the impact resistance of laminated plates are studied. The impact of different layering methods on the impact resistance of perforated GLARE laminates is simulated by finite element method. It is found that the larger the punch size is for the same laminated plate. The better the impact resistance of laminated plates; Among the different layering methods, the laminates with orthogonal laminates have the best impact resistance.
【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB333

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