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Design of U-Geometry Parameters Using Statistical Analysis Techniques in the U-Bending Process

机译:U型弯曲过程中使用统计分析技术设计U型几何参数

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The various U-geometry parameters in the U-bending process result in processing difficulties in the control of the spring-back characteristic. In this study, the effects of U-geometry parameters, including channel width, bend angle, material thickness, tool radius, as well as workpiece length, and their design, were investigated using a combination of finite element method (FEM) simulation, and statistical analysis techniques. Based on stress distribution analyses, the FEM simulation results clearly identified the different bending mechanisms and effects of U-geometry parameters on the spring-back characteristic in the U-bending process, with and without pressure pads. The statistical analyses elucidated that the bend angle and channel width have a major influence in cases with and without pressure pads, respectively. The experiments were carried out to validate the FEM simulation results. Additionally, the FEM simulation results were in agreement with the experimental results, in terms of the bending forces and bending angles.
机译:U形弯曲过程中的各种U形几何参数导致在控制回弹特性方面的处理困难。在这项研究中,U型几何参数(包括通道宽度,弯曲角度,材料厚度,刀具半径以及工件长度)的影响以及它们的设计是通过有限元方法(FEM)模拟的组合进行研究的,并且统计分析技术。基于应力分布分析,有限元模拟结果清楚地确定了在有或无压力垫的情况下,U形弯曲过程中不同的弯曲机理和U几何参数对回弹特性的影响。统计分析表明,在有或没有压力垫的情况下,弯曲角度和通道宽度都会产生重大影响。进行实验以验证有限元模拟结果。此外,在弯曲力和弯曲角度方面,有限元模拟结果与实验结果一致。

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