In this paper, we carry a feasibility study of an alternative sheet bending process using an incremental approach. This process aims to form a single curvature sheet using a point-by-point deformation. The incremental approach is beneficial for producing small batches of products, is flexible and cost effective, as it uses the same tool that could, in theory, produce in sheet shape in automotive, aerospace, naval or railway industry. We develop a finite element model of the forming process, and we use a trajectory composed of circle arcs to form the sheet. We evaluate the uniformity of the curvature radius. Then we conduct a study on the effect of numerical dissipative parameter on the curvature radius, bending force and the total energy given during the forming process. The curvature radius is quite uniform and we identify a convergence of the effect of the dissipative parameter on the quantitative results. The uniformity of the radius is making this process a viable option in sheet forming.

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Numerical Feasibility Study of Bending an Aluminum Sheet Using an Innovative Process

  • Salma Arache,
  • Mohamed ElAmine Ait Ali

摘要

In this paper, we carry a feasibility study of an alternative sheet bending process using an incremental approach. This process aims to form a single curvature sheet using a point-by-point deformation. The incremental approach is beneficial for producing small batches of products, is flexible and cost effective, as it uses the same tool that could, in theory, produce in sheet shape in automotive, aerospace, naval or railway industry. We develop a finite element model of the forming process, and we use a trajectory composed of circle arcs to form the sheet. We evaluate the uniformity of the curvature radius. Then we conduct a study on the effect of numerical dissipative parameter on the curvature radius, bending force and the total energy given during the forming process. The curvature radius is quite uniform and we identify a convergence of the effect of the dissipative parameter on the quantitative results. The uniformity of the radius is making this process a viable option in sheet forming.