Die angle effect on the generated residual stresses in the inclined and final region during the aluminum extrusion

IF 1.5 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Jabbar Gattmah, Emad Ali Hussein, Ayad Naseef Jaseem, Suha K. Shihab
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引用次数: 0

Abstract

X-ray diffraction (XRD) and the finite element technique (FET) to measure the residual stresses (RS) inside Al1060 rods produced by forming operation at three different half extrusion angles (HEA = 20°, 40°, and 60°) were applied. The results of the experimental work and FET illustrate a good convergence in terms of the relationship between extrusion force and displacement with an error ratio reaching 15 %. The effect of HEA = 20° on extrusion force is the lowest compared to others. Moreover, the behavior of the obtained residual stresses from XRD and FET is in good agreement with the existence of some variation in their values. The profile of these stresses is in a tensile state near the rod surface and a compressive state near the axis at HEA = 20° and 40°. In contrast, compressive residual stresses are obtained close to the surface and center of the extruded rod at HEA = 60°.

模具角度对铝挤压过程中在倾斜区和最终区产生的残余应力的影响
应用 X 射线衍射 (XRD) 和有限元技术 (FET) 测量了在三个不同的半挤压角(HEA = 20°、40° 和 60°)下通过成型操作生产的 Al1060 棒材内部的残余应力 (RS)。实验和 FET 的结果表明,挤出力和位移之间的关系趋于一致,误差率仅为 15%。与其他因素相比,HEA = 20° 对挤出力的影响最小。此外,从 XRD 和 FET 中获得的残余应力的行为也很一致,但其值存在一些变化。在 HEA = 20° 和 40° 时,这些应力在棒材表面附近呈拉伸状态,在轴线附近呈压缩状态。相反,在 HEA = 60° 时,挤压棒表面和中心附近的残余应力为压缩应力。
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来源期刊
Journal of Mechanical Science and Technology
Journal of Mechanical Science and Technology 工程技术-工程:机械
CiteScore
2.90
自引率
6.20%
发文量
517
审稿时长
7.7 months
期刊介绍: The aim of the Journal of Mechanical Science and Technology is to provide an international forum for the publication and dissemination of original work that contributes to the understanding of the main and related disciplines of mechanical engineering, either empirical or theoretical. The Journal covers the whole spectrum of mechanical engineering, which includes, but is not limited to, Materials and Design Engineering, Production Engineering and Fusion Technology, Dynamics, Vibration and Control, Thermal Engineering and Fluids Engineering. Manuscripts may fall into several categories including full articles, solicited reviews or commentary, and unsolicited reviews or commentary related to the core of mechanical engineering.
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