澳洲会计学论文代写:航空航天工程

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澳洲论文通 ASSIGNMENT PASS - 论文代写以独特的澳洲论文代写.澳洲essay代写和assignment代写专业服务理念,尝试创新的代写形式赢得了澳洲留学生的口碑.我们代写团队对于代写论文采取多样化的手段.做到了代写论文的原创性和对论文抄袭的杜绝.

20/01/2019

澳洲会计学论文代写:航空航天工程

更好的减重和性能是航空航天制造业工程操作的核心。在翼肋、风扇、压缩机转子等的制造和设计中,对制造效率的要求越来越高,这有助于实现性能和成本效益。在传统的制造方法中,使用的是锻造材料,但这种形式的锻造材料效率不高,因此需要对焊接技术进行分析。线性摩擦焊接是本文的研究对象。LFW是一种固态焊接技术,在这种焊接技术中,焊接表面摩擦在一起,使其升温(Wanjara & Jahazi, 2005)。目前的研究试图了解使用LFW模型获得更好的运行效率的可行性。采用二维有限元模型进行分析。

澳洲会计学论文代写:航空航天工程

在降低制造成本和效率方面,肋翼是一个重要的重点。肋翼制造的研究将其与高成本、高损耗联系起来。考虑传统的机翼加工是如何依赖于单一的铝合金坯料的(Menendez et al, 2006)。大约95%的合金重量被加工成废料,只有剩下的部分被利用。这就导致了成本问题。线性摩擦焊接(LFW)技术的应用使得利用加工工艺制造翼肋成为可能,从而减少了材料的浪费(Li et al., 2008)。LFW技术使得将肋足固定在主体上成为可能。这是肋脚,用于转移负荷从皮肤到肋。现在在对LFW技术的分析中,可以对联合企业如何在提高成本的同时提高运营绩效进行大量的研究讨论。虽然作为一种发展中的技术,这里存在一定的不确定性,但联合的实际存在被认为更有利于运营绩效(Bryden et al, 2000)。这里有以拉力、压缩和剪切形式存在的复杂载荷,为了理解整体性能的改善,必须对这些载荷进行研究。不允许在成本和性能之间进行权衡。

澳洲会计学论文代写:航空航天工程

Better weight reduction and performance is at the core of operations in engineering of the aerospace manufacturing industry. In the manufacture and design of the wing ribs, the fans, the compressor rotors etc., there is an increased need for efficiency in manufacturing that could help achieve the performance and cost benefits. In traditional manufacturing methods, forged material was being used however this form of forged material is not efficient and this brings into context an analysis of welding techniques. The Linear Friction Welding (LFW) is the object of analysis in this work. This is a welding technique that is already being used in much aerospace manufacturing such as compressor blisks etc. LFW is a kind of solid state welding technique in which the weld surfaces are rubbed together to cause them to heat up (Wanjara & Jahazi, 2005). The current study attempts to understand the feasibility of achieving better operational efficiency using the LFW model. A 2D finite element model method is used for this analysis.

澳洲会计学论文代写:航空航天工程

In reducing the cost and efficiency in manufacturing, an important focus is the rib wings. Research on the manufacturing of rib wings associates them with high costs and high wastage. Consider how the traditional machining of the wings relied on a single billet of aluminium alloy (Menendez et al, 2006). Around 95 percent of the weight in alloy is machined off as waste and only the remaining percentage is made use of. This leads to cost concerns. The use of the Linear Friction Welding (LFW) technology now makes it possible for manufacturing wing ribs that using machining process which reduces the amount of material waste (Li et al., 2008). LFW technology makes it possible to attach the rib feet to the main body. It is the rib feet that is used for the purpose of transferring loads from skin to rib. Now in the analysis of the LFW technology, much research discussion can be drawn on with respect to how the joint improves operational performance in addition to costs. Although as a developing technology, there is a certain amount of uncertainty here, the actual presence of the joint is seen to more supportive of operational performance (Bryden et al, 2000). There are complex loadings associated here in the form of tensions, compression and shear and these have to be studied to understand overall performance improvement. Trade-offs cannot be allowed between cost and performance.

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