STRETCH BENDING OF ALUMINUM EXTRUSIONS: EFFECT OF GEOMETRY AND ALLOY
STRETCH BENDING OF ALUMINUM EXTRUSIONS: EFFECT OF GEOMETRY AND ALLOY
复制标题
DOI：
10.1061/(asce)0733-9399(1999)125:4(392
复制
发表时间：
1999-04
期刊：
影响因子：
--
通讯作者：
A. Clausen;O. Hopperstad;M. Langseth
中科院分区：
文献类型：
--
作者：
A. Clausen;O. Hopperstad;M. Langseth
本文介绍了拉伸弯曲的实验研究。在专门设计的拉伸弯曲试验台上进行了24个2m长的矩形空心型材试件的试验。所有测试都是在与材料屈服应力相对应的恒定拉力下进行的。因子分析被系统地应用于实验方案的计划以及结果的解释中。特别注意了合金、模具半径和试件壁厚对某些响应参数的影响。由于拉伸弯曲是一种重要的工业成形过程，因此模压力、下垂和回弹被认为是最相关的响应。试验表明，合金对模压力和回弹的影响最大，而凹陷行为主要由模具的几何参数(即模具半径和厚度)控制。
An experimental stretch bending study is presented in this paper. A total of 24 tests on 2-m-long rectangular hollow section aluminum specimens are performed in a specially designed stretch bending rig. All tests are carried out with a constant tensile force corresponding to the material's yield stress. Factorial analysis is systematically used in the planning of the experimental program as well as in the result interpretation. Special attention is paid to the influence of the alloy, die radius, and specimen wall thickness on certain response parameters. As stretch bending is an important industrial forming process, die force, sagging, and springback are considered to be the most relevant responses. The tests show that the alloy has the largest influence on the die force and springback, while the sagging behavior is primarily controlled by the geometric parameters (i.e., die radius and thickness).