Analytical process design for interference-fit joining of rectangular profiles

Analytical process design for interference-fit joining of rectangular profiles
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矩形型材过盈配合连接的分析工艺设计

DOI:
10.1016/j.jmatprotec.2019.116391
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发表时间:
2020
影响因子:
6.3
通讯作者:
Tekkaya
Tekkaya
中科院分区:
材料科学1区
文献类型:
--
作者:
Müller;Tekkaya

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将经典的圆管无模液压成形连接方法推广到矩形型材的连接。提出了一种新的计算所需工艺参数的分析方法。它允许计算干扰压力p和由下限和上限(pi,m i n和pi,m a x)给出的所需流体压力范围。这些极限是内部和外部连接伙伴的变形状态的结果。最小压力(其中内部连接伙伴的塑性变形首先发生)表征接头形成开始时的值。最大压力是外部接合伙伴发生塑性变形的值。分析模型进行了验证实验研究,其中两个矩形铝型材(EN AW-6060)与不同的热处理条件下加入。高于pi,m a x,可实现的接头强度相对于内部压力的增加不再显著。在壁厚为3 mm的情况下,分析和实验确定的最大流体压力pi、max之间的最大偏差约为12%,在壁厚为5 mm的情况下约为11%。
The classical joining of round tubes by die-less hydroforming is extended to joining of rectangular profiles. A new analytical approach for the calculation of required process parameters is developed. It allows the calculation of the interference pressure p and the required fluid pressure range given by a lower and upper limit (p i, m i n and p i, m a x). These limits are the result of the deformation state of the inner and outer joining partner. The minimum pressure, where plastic deformation of the inner joining partner occurs first, characterizes the value at which the joint formation starts. The maximum pressure is the value, at which plastic deformation of the outer joining partner occurs. The analytical model is validated by experimental studies where two rectangular aluminum profiles (EN AW-6060) with different heat treatment conditions were joined. Above p i, m a x, the increase of the achievable joint strength with respect to the internal pressure is not significant anymore. The maximum deviation between the analytically and experimentally determined maximum fluid pressure p i, m a x is about 12% in case of a wall thickness of 3 mm and 11% in case of a wall thickness of 5 mm.
椭圆形截面型材的无模液压成形连接
DOI: --
发表时间: 2018
期刊:
影响因子: --
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DOI: --
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期刊:
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