The Influence of Tool Path in Incremental Forming of Double-Layers Sheet

Because of high flexibility of the incremental sheet metal forming, it is used as a Rapid prototyping tool. The formability of the sheet can be defined in terms of four major parameters: sheet thickness, tool path, speed (both rotational and feed rate) and radius of the forming tool. In this paper unlike previous studies, the forming behavior of clad sheet or double-layers is studied in which the two layers are produced by roll bounding. The double-layers sheet have different industrial applications in various industries according to their combined properties such as aerospace, electrical, chemical, automotive and food. The influences of major parameters on the formability during the process are studied such as strength, forming force, tensility and thinning of thickness. In order to study the process parameters, the use FE simulation of the process is used. A comparison between numerical and experimental results is made to assess the suitability of model. The results for both the methods are in good agreement, which indicate that the criteria chosen for determination of the mechanical behavior of the formed sheets has been adequate. The results also show strong potentials of the finite element method for simulation of the incremental sheet forming process, with the aim of estimating the critical parameters in this process.