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首页> 外文期刊>International journal of robotics research and development >FREQUENCY RESPONSES OF ALUMINUM A356 BASED ON HIGH STRENGTH ALLOY COMPOSITE (HSA_P)
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FREQUENCY RESPONSES OF ALUMINUM A356 BASED ON HIGH STRENGTH ALLOY COMPOSITE (HSA_P)

机译：基于高强度合金复合材料（HSA_P）的A356铝的频率响应

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摘要

MMCs are promising materials under constant development and their application in different industries is increasing. Aluminum is one such pioneer materials which is being used extensively in aerospace, automotive and the manufacturing industry. In the present study an analysis tool finite element analysis (FEA) will be used. The work presented in this paper is aimed at the study of vibration characteristics of aluminum A356 with different reinforcements. A356 alloy and Al-20Cu-10Mg alloy system has been investigated as matrix and reinforcements. Modulus of elasticity of composites was found from tensile test, and the samples are synthesized through stir casting technique by dispersing high strength alloy particulates (HSA_P) quickly and continuously to the vortex, and ingot into a Cast Iron cylindrical mould. Homogenized billets were hot extruded into φ 14 mm rod form. Density of the composites found to be increasing with increases weight ratio of reinforcements which is in tune with the calculated values by rule of mixtures, a variation densities among A356 Alloy and weight ratio (5%-10%-15%) reinforcements has been observed. Modeling of the samples using Solids Works 2013 and a modal analysis carried out using ANSYS software v.14.5, to understand the vibration behavior of the composite materials. Which play an important role in the design of dynamic machines. The harmonic analysis has done to determine the natural frequencies and the mode shapes of composite materials where evaluated and compared. The study showed that the effect of density and modulus of elasticity mainly on the vibration characteristics of the composite material where the natural frequency increases to increase the modulus of elasticity. The decrease of density causes the frequency increases of the samples, as well as the second moment of area has Influence on the vibration characteristics. The results are evident that vibration properties is higher for A356-10% in comparison with (A356 alloy, A356-5%, and A356-15%).
机译：MMC是不断发展的有前途的材料，它们在不同行业中的应用正在增加。铝是一种这样的先驱材料，已广泛用于航空航天，汽车和制造业。在本研究中，将使用分析工具有限元分析（FEA）。本文提出的工作旨在研究不同增强材料的铝A356的振动特性。已经研究了A356合金和Al-20Cu-10Mg合金体系作为基体和增强材料。通过拉伸试验发现复合材料的弹性模量，并通过搅拌铸造技术将高强度合金颗粒（HSA_P）快速连续地分散到涡流中，然后将铸锭放入铸铁圆柱模具中，从而合成样品。将均质的钢坯热挤压成φ14 mm的棒状。发现复合材料的密度随增强材料重量比的增加而增加，这与根据混合物的规则计算出的值一致，已观察到A356合金与增强材料重量比（5％-10％-15％）之间的变化密度。使用Solids Works 2013对样品进行建模，并使用ANSYS软件v.14.5进行模态分析，以了解复合材料的振动行为。这在动态机器的设计中起着重要作用。进行了谐波分析，以确定并比较了复合材料的固有频率和振型。研究表明，密度和弹性模量主要影响复合材料的振动特性，其中固有频率增加以增加弹性模量。密度的降低会导致样本频率增加，并且第二矩会影响振动特性。结果表明，与（A356合金，A356-5％和A356-15％）相比，A356-10％的振动性能更高。

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