Numerical analysis of draw bending of load-adapted sheet metal profiles
Numerical analysis of draw bending of load-adapted sheet metal profiles
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负载适应钣金型材拉深弯曲的数值分析
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
T. Matthias
中科院分区：
文献类型：
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作者：
B. Behrens;A. Bouguecha;J. Rosenberger;T. Matthias
与传统的滚压成型工艺相比，拉弯工艺代表了开放式金属板材型材的灵活且廉价的生产。拉深弯曲技术可以制造适用于轻量化设计应用的负载适应零件。它能够制造沿纵轴具有可调节横截面的主要轴承类零件。本文介绍了拉弯工艺及其功能原理，并详细说明了最重要的特性。它包括一些涉及拉延弯曲的研究项目的关键成果，证明了该技术在生产负载自适应型材方面的适用性。研究了不同尺寸、调整截面的U型型材的制作以及不同翼缘宽度、调整纵向翘曲的帽型型材的制作。与拉深工艺相比，仿形加工不受工具形状的限制。拉弯工艺的控制决定了型材生产过程中的轮廓。从而提高了灵活性，这对于小批量生产特别有用。此外还给出了数值结果。由于沿纵轴的横截面变化而产生的负载适应型材和底部区域的屈曲是数值和实验研究的焦点。
In comparison to traditional roll forming processes, draw bending process represents a flexible and inexpensive production of open sheet metal profiles. Draw bending technologies allow the fabrication of load-adapted parts for applications in lightweight design. It enables the fabrication for predominantly bearing-like parts with adjustable cross sections along the longitudinal axis. This paper introduces the draw bending process with its functional principle and specifies the most important characteristics. It includes the key results of some research projects dealing with draw bending, which prove the applicability of this technique to produce load-adapted profiles. The fabrication of u-shaped profiles with various dimensions and adjusted cross sections as well as the fabrication of hat-shaped profiles with various widths of flange and adjusted longitudinal warping was investigated. The profiling is, in contrast to deep drawing processes, not bound to the form of the tools. The control of the draw bending process defines the contour of the profile during its production. Thereby an increased flexibility is achieved which is particularly useful for small series. Moreover numerical results are presented. The production of load adapted profiles and the buckling of the bottom area, as a result of a cross-sectional variation along the longitudinal axis are in the focus of the numerical and experimental investigations.