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  本文關鍵詞：GLARE層板抗沖擊性能研究　出處：《哈爾濱理工大學》2015年碩士論文　論文類型：學位論文

  更多相關文章： GLARE層合板 圓孔位置 沖擊性能 數值模擬 預測分析

【摘要】：玻璃纖維增強鋁合金復合材料層合板（Glass Reinforced AluminumLaminates,簡稱GLARE層合板）是由玻璃纖維增強復合材料與高強度的鋁合金薄板構成，，在特定的溫度和壓力下，使用膠接技術相互交替鋪層、固化而成，其兼具了兩種材料的優(yōu)點。與鋁合金單層薄板相比較，GLARE層合板的質量更輕，而且抗疲勞等性能更好，而相對于玻璃纖維復合材料板，GLARE層合板的加工性能更好，而且GLARE層合板的抗沖擊性能明顯更好一些。為了滿足檢查、拆裝、維護等需要，經常會在層合板上加工出各種各樣的孔，其中以鉚接孔占多數，這些孔在很大程度上影響了GLARE層合板的力學性能。 對三個類型的GLARE層合板分別以圓孔與沖擊位置的距離進行編號，分組進行低速沖擊實驗，實驗分析結果表明：隨著圓孔逐漸遠離沖擊位置，GLARE層合板承受的最大載荷增加，最終吸收的沖擊能量變小，完成沖擊損傷變形的時間縮短，沖擊后最大位移與最終位移變小，以上結果說明圓孔對層合板的抗沖擊性能的影響變小，當距離達到20mm時，圓孔的影響已基本為零。 利用ABAQUS/CAE軟件對GLARE層合板進行了有限元模擬分析，并運用三維Hashin損傷準則以及逐漸失效分析方法，建立了與實驗相同載荷工況下的數值模型，并對該模型進行有限元數值模擬分析，將得到的模擬結果與實驗結果進行對比分析，發(fā)現二者的吻合度較高，說明了本文中的建模方法是合理的。 應用該有限元模型，對不同尺寸的沖頭對層合板抗沖擊性能的影響進行了研究，同時，對不同的鋪層方式對含孔GLARE層合板抗沖擊性能的影響進行了有限元預測模擬分析，發(fā)現對于同一種層合板而言，沖頭尺寸越大，層合板的抗沖擊性能越好；而不同的鋪層方式中，正交鋪層的層合板的抗沖擊性能最好。
[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.
【學位授予單位】：哈爾濱理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB333

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