Groove Filling Characteristics and Strength of Form-Fit Joints Produced by Die-Less Hydroforming
Groove Filling Characteristics and Strength of Form-Fit Joints Produced by Die-Less Hydroforming
复制标题
无模液压成形生产的形状配合接头的凹槽填充特性和强度
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
A. Tekkaya
中科院分区：
文献类型：
--
作者：
S. Gies;C. Weddeling;L. Kwiatkowski;A. Tekkaya
现代轻质结构的制造和多材料概念的实施，例如在汽车工程中，需要适当的连接技术。无需额外的连接元件或填充材料以及连接不同金属的可能性是该应用领域的基本要求，以达到期望的重量减轻。在管接头的情况下，无模液压成形工艺满足了这些要求，因此使其成为传统焊接和铆接工艺的有趣替代品。目前的工作重点是无模液压成形生产的形状配合接头。它提供了先前提出的分析方法的验证，该分析方法允许计算将管材料凸出到外部连接伙伴的凹槽中所需的工作流体压力。为此目的，连接试样与不同的沟槽几何形状的沟槽填充特性进行了分析。两个连接件均由EN AW-6060铝合金制成。此外，连接试样的连接强度使用拉伸试验来确定。结果表明，坡口角度是影响连接强度的主要因素，并可用于对不同坡口形状的连接强度进行排序比较。
The manufacturing of modern lightweight structures and the implementation of multi material concepts, for example in automotive engineering, entails appropriate joining technologies. The absence of additional connection elements or filling materials as well as the possibility to join dissimilar metals are basic requirements in this field of application to reach the aspired weight reduction. In case of tubular joints the die-less hydroforming process meets these demands and thus makes it an interesting alternative to conventional welding and riveting processes. The present work focuses on form fit joints produced by die-less hydroforming. It provides a verification of a previously presented analytical approach that allows the calculation of the working fluid pressure required to bulge the tube material into the groove of the outer joining partner. For that purpose, the groove filling characteristics of joined specimens with different groove geometries are analyzed. Here both joining partners were made of the aluminum alloy EN AW-6060. Additionally the connection strength of the joined specimens are determined using tensile tests. The results prove that the groove angle is the main influencing factor on the connection strength and that it can be used for an ordinal comparison of different groove geometries.
DOI：
10.1016/j.jmatprotec.2010.08.004
发表时间：
2011-05-01
影响因子：
6.3
作者：
Weddeling, Christian;Woodward, Steven T.;Tillmann, Wolfgang
通讯作者：
Tillmann, Wolfgang